SlimAI vs Lose It!: Calorie Goals, Food Logging, and Progress Compared
Short answer
Both apps track calories, macros and weight. Lose It! has the longer history and a large community-built database, and splits several logging tools across its Premium tier. SlimAI puts six logging methods in one tier, opens every AI estimate as an editable ingredient list, and adds a photo-based body fat estimate Lose It! does not offer.
Some calorie trackers start with a weight-loss budget. SlimAI starts with the full food and fitness routine.
If you are comparing SlimAI vs Lose It!, you are choosing between two different tracking styles. Lose It! is a long-established calorie counter and weight-loss progress app built around calorie budgets, food diaries, weight-loss plans, community support, and Premium tools.
SlimAI Calorie Tracker supports weight-loss goals too, but it does not make weight loss the only story. SlimAI is built for users who want food awareness, flexible calorie goals, macro tracking, fasting, water, workouts, steps, recipes, and progress in one affordable routine.
SlimAI is also the first AI calorie tracker with a built-in AI body fat calculator (based on publicly available feature listings, July 2026): AI Body Assessment estimates your body fat percentage from two photos, so progress can mean body composition, not only the number on the scale.
The difference is not whether calorie goals matter. They do. The difference is whether you want weight loss to frame every meal, or whether you want weight loss to be one possible goal inside a broader tracking routine.
SlimAI also interprets the budget instead of only enforcing it. AI Coach reads your logged week and answers where your weight is heading, what drove it, and the one thing worth doing next, then sends a written report every Monday — all from deterministic rules over your own numbers rather than a language model.
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Quick Verdict: SlimAI vs Lose It!
Choose SlimAI if you want calorie tracking that supports flexible goals — including gram-level custom macro targets, real-time portion warnings before you exceed your day, ingredient-level control over every logged meal with each ingredient shown at its exact weight and editable, removable, or added from a searchable database, and per-meal calorie ranges that show which meals are still owed and which are optional — plus food awareness, macros, fasting, water, workouts, steps, recipes, and progress without making every meal feel like a strict diet-budget decision.
Only SlimAI includes AI Body Assessment — a photo-based body fat estimate that shows whether your routine is changing body composition, not only the number on the scale.
Only SlimAI reads the week back to you: a smoothed weight trajectory, the meal and weekdays that drove your calories, one win and at most one thing to watch, a 0–100 weekly score, and a written Monday report — free — with cross-feature health patterns, one-tap food swaps, plateau detection with an adaptive target, and single-question AI answers on a logged meal in SlimAI Pro.
Choose Lose It! if you want a weight-loss-focused calorie counter built around a daily calorie budget, food diary, weight-loss plan, community support, and Premium tracking tools.
SlimAI is built for users who want food, fitness, habits, and progress connected in one simple, affordable routine. Lose It! is built for users who want a structured weight-loss budget experience.
SlimAI combines AI meal logging, body fat estimates, 6 fasting plans, utensil-based water tracking, and swap-based diet plans in one app at $7.99/month — competitors typically cover a subset.
Where SlimAI Comes Out Ahead
Across 28 points of comparison, SlimAI leads on 21, is comparable on 6, and Lose It! leads on 1. The differences below are the ones that change how your day actually goes.
A budget that is recalculated as you shrink
Log a weigh-in that is your latest reading, or change your goal, pace, activity level, body type, or cuisine, and SlimAI reruns the calculation behind your original plan — updating your daily calorie target, your protein, fat and carbohydrate grams, your per-meal budgets, your BMI, your diet plan (cleared and refetched against the new budget), your stats and coach, and your home-screen widgets in one save. The new target is shown live while you edit, and a manual macro split is kept as a ratio and re-applied to the new total. On a long cut that is the difference between a deficit that keeps working and one that quietly disappears.
Every logging method in one plan
Camera Scan, Gallery Upload, Voice to Log, Barcode Scanner, Type to Add, and Food Database Search all sit in the same sheet under SlimAI Pro at $7.99/month or $29.99/year, with a 3-day free trial. Lose It! lists Snap It, AI Voice, and Barcode Scanner as separate Premium features, per public feature descriptions, as of July 2026.
The scan you can actually correct
Every ingredient shows its exact weight and can be edited, removed, or added from a searchable database, and an in-app Sources & References screen explains how the estimate was produced. A wrong number costs you seconds, not a whole day of skewed data.
Progress the scale cannot show
AI Body Assessment estimates body fat percentage from two photos with regional fat distribution, so a plateau on the scale stops being the end of the story. No photo-based body fat estimate is listed in public Lose It! feature descriptions, as of July 2026. Results are estimates for fitness awareness, never measurements or medical advice.
Guidance at the table, not midnight
SlimAI tells you what fraction of the plate in front of you fits your remaining calories and gives every meal its own recommended range with a live status. The budget guides the next bite instead of grading the finished day.
The budget explained, once a week
AI Coach fits a trend line through exponentially smoothed weight logs rather than subtracting one weigh-in from another, names the meal type and two weekdays that drove your calories and the dishes behind them, scores the week 0–100 across adherence, consistency, macro quality, and activity, and ends each insight in a button that opens the right screen prefilled. A written report lands every Monday.
A stalled scale gets an answer, not a shrug
When your smoothed weight trend has been flat for at least 14 days and your adherence over that window was good, SlimAI names the plateau and proposes one change — a small step down in calories, or 2,000 more daily steps — applying neither without your confirmation, with a gender-aware calorie floor, a rate cap near 1% of bodyweight per week, suppression for any medical condition, and inline undo. If your logging was patchy, it says so instead of touching your target. Part of SlimAI Pro.
Seen enough? Try SlimAI against Lose It! yourself.
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SlimAI vs Lose It!: Feature-by-Feature Comparison
Each row names what both apps offer and who it favours. Rows where Lose It! leads are marked as clearly as the rows where SlimAI does.
| What you are comparing | Lose It! | SlimAI |
|---|---|---|
| AI logging | ||
| Main positioningA weight-loss budget and a whole food routine solve two different problems.Comparable | Lose It!A calorie-budget weight-loss tracker built around plans, streaks, and community, per public feature descriptions, as of July 2026 — the more structured and goal-first of the two. | SlimAIFlexible tracking where weight loss is one possible goal beside maintenance, food quality, fitness, and body composition — so a maintenance week is not a failed week. |
| AI food scanThe faster a meal gets logged, the more likely it gets logged at all.SlimAI advantage | Lose It!Snap It photo meal logging is listed as a Premium feature, per public feature descriptions, as of July 2026. | SlimAICamera Scan and Gallery Upload both work, and every result opens for review before it saves — so the photo starts your entry instead of finishing it for you. |
| Voice loggingThe meals you cannot type in the moment are the ones you forget by evening.SlimAI advantage | Lose It!AI Voice is listed as a Premium feature, per public feature descriptions, as of July 2026. | SlimAIVoice to Log captures the meal out loud while your hands are busy cooking, driving, or holding the plate, so oils, sauces, and portions get recorded before memory blurs them. |
| Barcode scannerPackaged food is where a wrong guess costs you the most calories.SlimAI advantage | Lose It!Barcode Scanner is listed as a Premium feature, per public feature descriptions, as of July 2026. | SlimAIThe barcode scanner sits in the same logging sheet as photo, voice, and search, so a packaged snack lands beside your macros and remaining calories without switching flows. |
| Manual food loggingSome meals you already know by heart, and typing them should take seconds.Comparable | Lose It!A food diary with database search, custom foods, and quick-add entries is publicly listed, per public feature descriptions, as of July 2026 — a mature and familiar manual flow. | SlimAIType to Add, Food Database Search, Recent Foods, Saved Foods, and Back-Date Logging cover the meals you repeat and the day you forgot to fill in. |
| Nutrition depth | ||
| Macro trackingMacros behind a paywall are macros most people never actually look at.SlimAI advantage | Lose It!Advanced macro and nutrition tracking is listed under Premium features, per public feature descriptions, as of July 2026. | SlimAIProtein, carbs, and fat on every meal, recipe, and daily total, with gram-level targets, so you see what shaped the calorie number while you can still change it. |
| Micronutrient visibilityHitting your calorie target while missing key nutrients still leaves you flat.Comparable | Lose It!Advanced tracking covering vitamins, minerals, sugar, and health metrics is listed in public Premium descriptions, per public feature descriptions, as of July 2026 — a longer nutrient list than SlimAI shows today, though it sits behind Premium. | SlimAIMicronutrient visibility and Food Health Score are part of the standard food detail view rather than a separate nutrition tier. |
| Recipes and cooking directions in-appIf the recipe lives somewhere else, you cook first and log later — or never.SlimAI advantage | Lose It!Recipe creation is publicly listed and Meal Planning & Targets is listed as a Premium feature, per public feature descriptions, as of July 2026; cooking time and numbered directions on a logged food detail screen are not described. | SlimAICooking time and numbered directions sit on the food detail screen itself, so the meal you just planned is the meal you can cook without leaving the app. |
| Food and recipe coverageThe number that matters is how often the first result is right, not how many results exist.Comparable | Lose It!Public listings describe 56M+ items and recipes, per public feature descriptions, as of July 2026. A catalogue that size is counting rows rather than distinct foods — user-submitted entries, brand spellings, plurals, language variants, and portion variants each take a row — though the breadth still helps for unusual branded products. | SlimAI50K+ curated food items kept deliberately tight so the right entry is the first result, plus Recent Foods, Saved Foods, and custom entries — with four fallbacks when a food is genuinely missing: AI photo scan, voice, barcode, and printed nutrition label. A food does not have to be in a list to be logged. |
| Goals & guidance | ||
| Custom calorie & macro goalsA goal someone else picked for you is the first thing you stop following.SlimAI advantage | Lose It!Customizable budgets and macro targets appear in public feature descriptions, as of July 2026, with advanced goal tools listed under Premium. | SlimAISet your own daily calories plus gram-level protein, carb, and fat targets; the guided estimate is offered, never forced, so the number you track against is one you agree with. |
| Real-time portion guidanceFinding out you went over after dinner is too late to do anything about it.SlimAI advantage | Lose It!No real-time in-meal portion fraction guidance is listed in public Lose It! feature descriptions, as of July 2026. | SlimAIBefore you save, SlimAI suggests how much of the scanned plate fits your remaining day — a quarter, a half, or the full serving — and warns you at the table instead of at midnight. |
| Per-meal calorie ranges with statusHalf your calories left at 8pm is a planning problem, not a willpower problem.SlimAI advantage | Lose It!The diary groups entries by meal and Meal Planning & Targets is listed as a Premium feature covering meal-level targets, per public feature descriptions, as of July 2026; a live per-meal recommended range with taken, not-taken, or optional status on the home screen is not described. | SlimAIBreakfast, lunch, dinner, and snacks each carry a recommended range and a live Over Limit / Not taken / Need to Eat / Optional status, so you always know what the day still owes you. |
| Diet plan with healthy swapsBeing told to eat better helps less than being told what to eat instead.SlimAI advantage | Lose It!Meal Planning & Targets is listed as a Premium feature, per public feature descriptions, as of July 2026; a one-tap healthier-swap suggestion is not described. | SlimAIPersonalized meals matched to your taste and regional preferences, with one-tap Better Choice swaps and quick meals that replace a choice rather than only flagging it. |
| Coaching & insights | ||
| Weekly coaching read from your own logA budget tells you whether you went over. It does not tell you why, or what to do next.SlimAI advantage | Lose It!Insights, patterns, and milestones are described alongside the calorie budget, per public feature descriptions, as of July 2026; a weekly trajectory built from a smoothed weight trend with calorie attribution by meal and weekday, and one prefilled next action, are not described. | SlimAIAI Coach answers three questions a week — where your weight is heading, what drove it, and the one next action — from a smoothed weight trend, meal-type and weekday attribution, a win and watch pair, and a 0–100 weekly score, with every insight ending in a button that opens the right screen prefilled. |
| Written weekly reportThe weekly review you keep meaning to do is the one that never happens.SlimAI advantage | Lose It!Progress summaries, streaks, and milestone feedback are described, per public feature descriptions, as of July 2026; a generated written weekly report with ranked insights and one recommendation is not described. | SlimAIA written report every Monday: calorie average against goal, days on target, best day, macros, weight change, body-fat change when a body scan exists, two to three ranked insights, and one recommendation. Free for all users, and a quiet week still gets one. |
| Cross-feature health patternsYour fasting, training, hydration, and body scans explain the budget better than the budget explains itself.SlimAI advantage | Lose It!No cross-feature pattern engine comparing fasting, training, hydration, meal timing, and body-composition data against each other is described, per public feature descriptions, as of July 2026. | SlimAIOne observed pattern a week from nine rules across your own log — fasting versus non-fasting days, training versus rest, protein on training days, low-water days, late eating, planned versus improvised meals, and lean-mass change across two body scans. Each states its sample size and is phrased as an observation. Part of SlimAI Pro. |
| Plateau detection and target adjustmentThe week the scale stops moving is the week most people stop logging.SlimAI advantage | Lose It!Calorie budgets are recalculated as your weight and goal change, per public feature descriptions, as of July 2026; automatic plateau detection with a confirmable, reversible adjustment is not described. | SlimAIA plateau is called only when the weight trend has been flat for at least 14 days and adherence over that window was good. SlimAI then proposes one small change — a step down in calories or 2,000 extra daily steps — applying neither without confirmation, with a gender-aware calorie floor, a rate cap near 1% of bodyweight per week, suppression for any medical condition, and inline undo. Part of SlimAI Pro. |
| AI questions about a logged mealA search engine cannot see the meal sitting in your diary.SlimAI advantage | Lose It!No single-question AI answer scoped to an individual logged meal is described, per public feature descriptions, as of July 2026. | SlimAIAsk About Your Meal answers one question about one logged dish from its stored analysis, in your app language, with no conversation thread by design and a daily quota. It is the only generative-AI text surface in SlimAI and gives no medical advice. Part of SlimAI Pro. |
| Transparency & control | ||
| Ingredient-level breakdown you can editOne wrong ingredient inside an AI estimate quietly bends your whole day.SlimAI advantage | Lose It!Custom foods and recipes let you enter ingredients yourself, per public feature descriptions, as of July 2026; an editable per-ingredient weight breakdown on an already-logged meal, with an add-missing-ingredient search, is not described. | SlimAIEvery ingredient shows its exact weight and can be edited, removed, or added from a searchable database, so a wrong AI estimate takes seconds to correct instead of skewing your totals. |
| Disclosed calculation methodIf you cannot see how a number was produced, you cannot tell when it is wrong.SlimAI advantage | Lose It!No in-app sources-and-references screen explaining how calorie and burn estimates are produced is listed, per public feature descriptions, as of July 2026. | SlimAIAn in-app Sources & References screen explains how calorie, portion, and burn estimates are produced, so a surprising number can be checked instead of simply believed. |
| Habits & wellness | ||
| AI body fat estimate (Body Assessment)A stalled scale still hides whether you lost fat and gained muscle this month.SlimAI advantage | Lose It!No photo-based body fat estimate is listed in public Lose It! feature descriptions, as of July 2026. | SlimAIAI Body Assessment estimates body fat percentage from two photos using peer-reviewed formulas (US Navy, RFM, CUN-BAE), with regional fat distribution and a tape-measure option; AI photo analysis is part of SlimAI Pro. Results are estimates for fitness awareness, shown as a likely range with a confidence rating — never measurements, diagnosis, or medical advice. |
| Intermittent fasting plansA fasting window only helps if what you eat inside it is tracked too.SlimAI advantage | Lose It!Intermittent Fasting is listed as a Premium feature, per public feature descriptions, as of July 2026. | SlimAISix selectable plans (14:10, 16:8, 20:4, 22:2 OMAD, 6:1, 5:2) with schedules that live in the same app as your calories, water, and steps — no second fasting app to open. |
| Water trackerHydration is the easiest habit to log and the easiest one to quietly drop.SlimAI advantage | Lose It!Water tracking is referenced in public app descriptions and support material, per public feature descriptions, as of July 2026. | SlimAILog by the utensil you actually drink from — jug, bottle, mug, or glass with custom sizes — plus a daily goal and drink history, so hydration takes one tap instead of arithmetic. |
| Workout trackingCalories burned change what you can eat, so leaving them out skews the day.SlimAI advantage | Lose It!Exercise tracking is included in basic features, with fitness app syncs listed as Premium, per public feature descriptions, as of July 2026. | SlimAIWorkouts and calories burned are logged in the app and feed straight into the calories you have left, so a training day and a rest day never look the same. |
| Step trackingBoth apps read steps from your phone or watch, so the count is only as good as the device.Comparable | Lose It!Fitness tracker syncs are listed, per public feature descriptions, as of July 2026; step visibility depends on the connected device or app. | SlimAISteps arrive through health integration where available and sit beside meals, water, and fasting on the same daily view. |
| Track record and community supportYears of people finishing what they started is evidence no feature list can give you.Lose It! leads | Lose It!A long-established weight-loss app with years of public results, challenges, and an active community, per public feature descriptions, as of July 2026 — if group motivation is what keeps you going, that history is a real advantage. | SlimAIA newer app with a smaller community, betting on daily clarity — editable AI logs, per-meal ranges, and body composition trends — to keep you consistent on your own terms. |
| Pricing & access | ||
| PricingA tracker only pays off if you keep it long enough to see a trend.SlimAI advantage | Lose It!A free basic plan, with Premium adding Snap It, AI Voice, Barcode Scanner, advanced macro tracking, Intermittent Fasting, Meal Planning & Targets, and fitness app syncs, per public feature descriptions, as of July 2026. | SlimAIFree to download. SlimAI Pro is $7.99/month or $29.99/year, and both plans include a 3-day free trial — one tier covering unlimited AI scans, body fat estimates, fasting, water, and diet plans. |
| Best user typeThe best tracker is the one still in your routine in month three.Comparable | Lose It!People who want a structured weight-loss budget, a weight-loss plan, and community accountability, per public feature descriptions, as of July 2026 — a proven format for anyone who thrives on it. | SlimAIPeople who want flexible goals, editable AI meals, connected habits, and a body-composition signal without every tool sitting behind a separate upgrade. |
Comparison based on publicly available information as of July 2026. Competitor features and pricing may change — check their official sites for the latest.
Food Logging: Which App Gives You More Ways to Track?
Food logging becomes harder when one method does not fit the meal.
SlimAI gives you Type to Add, Food Database Search, Camera Scan, Gallery Upload, Voice to Log, Barcode Scanner, Recent Foods, Saved Foods, Ingredient Editing, Serving Size Guidance, and Back-Date Logging. You can log the meal the way it actually happened instead of forcing every entry into one workflow.
This helps when you are eating homemade food, restaurant meals, repeated meals, packaged foods, or missed meals from earlier in the day.
Lose It! gives users a traditional food diary workflow with database search, calorie budgets, and Premium logging tools. That may suit users who want a familiar calorie counter structure built around weight-loss tracking.
Barcode scanning matters when packaged foods are part of your routine. SlimAI includes Barcode Scanner for packaged food logging, so packaged foods can sit beside your macros, calorie goals, saved foods, and progress review. Lose It! lists Barcode Scanner as a Premium feature in public app store descriptions.
AI food logging saves time when typing every ingredient slows you down. SlimAI supports Camera Scan and Gallery Upload, so you can log food from a meal photo or saved image. After the scan, you can review the meal, edit ingredients, and adjust serving size before saving. Lose It! lists Snap It photo meal logging as a Premium feature.
Voice logging helps when typing breaks your routine. SlimAI includes Voice to Log, so you can speak meal details while cooking, multitasking, or logging from memory. Lose It! lists AI Voice as a Premium feature.
Homemade food rarely matches one perfect database entry. SlimAI lets you scan, speak, type, upload, search, edit ingredients, adjust serving size, and back-date missed entries. Lose It! may suit users who prefer creating meals and recipes inside a traditional calorie counting system.
Flexible Goals: Weight Loss as One Possible Goal
Calorie tracking can support weight loss, maintenance, food awareness, fitness, or consistency.
SlimAI supports weight-loss goals without making weight loss the frame around every meal. You can set calorie goals, review consumed and burned calories, check remaining calories, track macros, log activity, add water, follow fasting, and review progress.
This makes SlimAI useful for users who want body-positive tracking, flexible goals, and nutrition clarity without turning every meal into a pass-or-fail diet moment.
Lose It! puts weight-loss goals at the center of the tracking experience. Its public listings focus on weight-loss plans, calorie budgets, food tracking, exercise tracking, community support, progress tracking, and Premium tools. That may suit users who want a structured weight-loss budget.
Calorie goals work better when they connect with the rest of your routine. SlimAI uses Custom Calorie Goals, consumed calories, burned calories, remaining calories, macros, activity, hydration, fasting, and progress history to give users a fuller daily view. Lose It! uses calorie budgets and weight-loss plans to guide daily tracking.
Progress should show patterns, not only daily success or failure. SlimAI connects meal logs, workouts, water, fasting, steps, streaks, progress history, and progress photos where available. Lose It! emphasizes weight-loss progress, streaks, patterns, milestones, insights, and community motivation.
A calorie budget tells you what you ate; body composition shows what changed. SlimAI's AI Body Assessment estimates body fat percentage from two photos using peer-reviewed formulas, so weight loss, maintenance, or muscle-focused goals all get a clearer progress signal. No comparable photo-based body fat estimate is listed in public Lose It! feature descriptions.
SlimAI tracks calories, macros, fasting, water, workouts, steps, recipes, and progress inside one routine. You can use it to lose weight, maintain weight, understand food quality, support workouts, or build more consistent habits.
What Happens When the Budget Stops Working
A calorie budget is a good instrument right up to the week it stops producing results. At that point most apps keep showing the same number, and most people quietly stop logging.
SlimAI treats that week as the interesting one. AI Coach smooths your weight logs with an exponential moving average over a 14-day span and fits a trend line through the smoothed points, so a flat fortnight reads as a trend rather than as noise or failure. If adherence over that window was good, plateau detection proposes exactly one change — a small step down in calories, or 2,000 more steps a day — and applies neither until you confirm it, with a gender-aware calorie floor it never crosses, a rate cap of roughly 1% of bodyweight per week, and inline undo that restores the previous target exactly.
If your logging was patchy over the same period, SlimAI does not touch the target at all. It says the data cannot support a change yet and names what is missing, because lowering calories on the strength of an incomplete log is how people end up under-eating for the wrong reason.
The rest of the coaching layer works the same way: every rule declares a minimum sample and stays silent below it, a screen never shows more than one thing to watch, and a negative never appears without a paired win. The weekly score is presented as a lever rather than a grade, with no red and no fail state. A written report arrives every Monday and is free, along with the coach card, trajectory, attribution, weekly score, and micro-lesson.
Tracking Tools Beyond Calories
Calories explain the energy number. Macros explain what shaped it.
SlimAI tracks protein, carbohydrates, and fats across meal logs, recipes, dashboard totals, Progress, and Insights. SlimAI also shows micronutrient visibility and Food Health Score for deeper food context.
Lose It! lists advanced tracking for macros, sugar, vitamins, minerals, and health metrics as Premium features. That may suit users who want deeper nutrition tracking inside a paid traditional calorie app.
Fasting and hydration belong near your food data. SlimAI includes fasting and water tracking in the same routine where you log meals and review calories. Lose It! lists Intermittent Fasting as a Premium feature and references water tracking in public support contexts. If fasting access matters, the Premium distinction is important.
Food tracking becomes clearer when activity sits beside it. SlimAI includes workout tracking, calories burned, and step tracking with health integration where available. Lose It! includes exercise tracking in its basic features and lists fitness app syncs as Premium.
Who Should Choose SlimAI?
Choose SlimAI if you want calorie tracking without making weight loss the only story.
SlimAI gives you food logging, barcode scanning, voice logging, macro tracking, fasting, water, workouts, steps, meal suggestions, recipes, progress insights, and flexible calorie goals in one routine.
SlimAI also fits busy users who need more than one logging method. You can scan, speak, type, upload, search, reuse saved foods, edit ingredients, adjust serving size, and back-date missed entries.
Best fit: You want a Lose It! alternative built for meal review, body-positive tracking, flexible goals, nutrition clarity, and daily routine support.
Who Might Choose Lose It!?
Choose Lose It! if you want a weight-loss-focused calorie counter with a traditional diary structure.
Lose It! suits users who prefer calorie budgets, weight-loss plans, community support, a large food database, and a long-established app ecosystem. It also suits users who already use Lose It! Premium tools and want to stay inside that workflow.
Lose It! is a strong fit for a structured weight-loss budget. SlimAI is a strong fit for tracking food, habits, activity, and progress beyond weight loss.
Switching from Lose It! to SlimAI
A calorie budget you already understand transfers in about two minutes. What you gain is everything that happens after the number.
Set the same goal, keep the same budget
Personalized setup asks for your goal, pace, target weight, activity level, and preferred diet, then sets calories and gram-level protein, carb, and fat targets. If you already know your numbers, you can enter them directly.
Your Lose It! history stays in Lose It!
SlimAI does not import diary history from another app. Run both for a few days if the past data matters to you — the streaks, weight trend, and insights in SlimAI start from your first log.
Every logging method in one sheet
Camera Scan, Gallery Upload, Voice to Log, Barcode Scanner, Type to Add, and Food Database Search sit together under one SlimAI Pro tier. Lose It! lists Snap It, AI Voice, and Barcode Scanner as separate Premium features, per public feature descriptions, as of July 2026.
Three days to find out
Both SlimAI plans open with a 3-day free trial and cancel from your store account, so the test costs attention rather than money.
What SlimAI costs after the trial
$29.99 a year — under $3 a month — for one tier that covers AI scanning, body fat estimates, fasting, water, workouts, diet plans, and progress. Monthly is $7.99. Both start with a 3-day free trial and cancel from your store account.
Twelve months at the monthly price is $95.88, so yearly saves $65.89 (69% off). Lose It! pricing changes independently — check its current store listing before comparing.
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What the research says about tracking apps
Independent findings, not ours
Neither of these papers tested SlimAI or Lose It!. They describe the category both apps sit in, and they are the two things worth knowing before you pick either one.
Across 90 adults tracking food in an app for eight weeks, the people who completed the study logged on 70.2% of days and lost 2.19% of body weight, against 1.54% for the sample as a whole, which logged on about half of days. Frequency of logging explained 6.8% of the variance in weight change.
A meta-analysis of 14 validation studies covering 12 dietary-record apps found every app underestimated energy intake against its reference method, pooled at −202 kcal/day (95% CI −319 to −85). Where the app and the reference used the same food-composition table, the gap fell to −57 kcal/day (95% CI −116 to 2), so most of the error came from the database rather than the app.
FAQ
Still Wondering About SlimAI
Is SlimAI a Lose It! alternative?
Is SlimAI a Lose It! alternative?Yes. SlimAI Calorie Tracker is a Lose It! alternative for users who want meal review, barcode scanning, voice logging, macro tracking, fasting, water, workouts, steps, meal suggestions, recipes, and progress insights in one affordable routine. Lose It! may still suit users who want a traditional calorie counter focused on weight-loss budgets and Premium tracking tools.
Which app is better for AI calorie tracking?
Which app is better for AI calorie tracking?SlimAI is a stronger fit for users who want AI calorie tracking without relying on one logging method. It includes Camera Scan, Voice to Log, Type to Add, Gallery Upload, Barcode Scanner, and Food Database Search. Lose It! may suit users who want Snap It photo meal logging and AI Voice inside a Premium traditional calorie counting app. The better choice depends on whether you want flexible AI logging in one affordable routine or AI logging inside Lose It!'s paid ecosystem.
Does Lose It! require a subscription?
Does Lose It! require a subscription?Lose It! offers a free basic plan. Public app store listings show Premium features including Snap It photo logging, AI Voice, Barcode Scanner, advanced macro tracking, Intermittent Fasting, Meal Planning & Targets, and Fitness App Syncs. SlimAI Calorie Tracker is free to download, with SlimAI Pro available for $7.99/month or $29.99/year.
Which app is better for flexible goals?
Which app is better for flexible goals?SlimAI is a stronger fit for users who want calorie tracking for food awareness, fitness, habits, maintenance, or weight loss without making weight loss the only story. Lose It! may suit users who want a structured weight-loss calorie budget, weight-loss plan, food diary, and community support. The better choice depends on whether you want flexible routine tracking or a weight-loss-first calorie counter.
Does SlimAI or Lose It! estimate body fat percentage?
Does SlimAI or Lose It! estimate body fat percentage?SlimAI includes AI Body Assessment, a built-in AI body fat calculator that estimates body fat percentage from two photos using peer-reviewed formulas (US Navy, RFM, CUN-BAE), with regional fat distribution and a tape-measure option. AI photo analysis is part of SlimAI Pro. Results are always an estimate for fitness awareness, shown as a likely range with a confidence rating. No photo-based body fat estimate is listed in public Lose It! feature descriptions.
Does SlimAI track macros?
Does SlimAI track macros?Yes. SlimAI Calorie Tracker tracks macros, including protein, carbohydrates, and fats. You can review macros across logged meals, recipes, dashboard totals, Progress, and Insights. This helps you understand meal structure beyond calorie totals.
Which app is better for fasting and water tracking?
Which app is better for fasting and water tracking?SlimAI is a stronger fit for users who want fasting and water tracking beside meals, calories, macros, workouts, steps, and progress. Lose It! may suit users who want Intermittent Fasting inside Lose It! Premium and water tracking within the Lose It! ecosystem. The better choice depends on whether you want habit tracking included in one affordable routine or inside a traditional weight-loss tracking ecosystem.
Does SlimAI have an AI coach?
Does SlimAI have an AI coach?Yes. AI Coach reads the week you already logged — meals, calories, macros, water, fasting, steps, workouts, weight, and body scans — and answers where your weight is heading, what drove it, and the single next action, with a button that opens the right screen prefilled and a written report every Monday. It is not a chatbot: every sentence comes from fixed rules over your own data, so the same week always produces the same output, and each rule stays silent below its minimum sample rather than showing a weaker number. The coach card, trajectory, attribution, weekly score, micro-lesson, and the Monday report are free.
What does SlimAI do when my weight loss stalls?
What does SlimAI do when my weight loss stalls?It checks two conditions before calling it a plateau: a smoothed weight trend flat for at least 14 days, and consistent logging across that window. If both hold, SlimAI proposes one small change — a single step down in calories, or 2,000 more steps a day — and applies neither until you confirm, with a gender-aware calorie floor it never crosses, a rate cap near 1% of bodyweight per week, full suppression for any medical condition including pregnancy, and inline undo. If your logging was patchy, it treats that as a data problem and leaves your target alone. Plateau detection is part of SlimAI Pro.
Which app is better for beginners?
Which app is better for beginners?SlimAI is a stronger fit for beginners who want to understand meals without building the whole routine around dieting. You can scan, speak, type, search, reuse foods, and review macros, habits, and progress in one place. Lose It! may suit beginners who want a traditional calorie budget, weight-loss plan, food diary, and community support. The better choice depends on whether you want flexible nutrition tracking or a weight-loss-first calorie counter.
Make the switch from Lose It! with AI Meal Logging.
Log your next meal in SlimAI and see the difference on day one. Free for three days.
Free 3-day trial, then $7.99/month or $29.99/year. Cancel anytime.
- 50K+ food items in the food database
- 100K+ downloads on iOS and Android
- 7 languages
- 4.8★ App Store · 4.6★ Google Play (as of August 23, 2026)
