Comparison

AI Calorie Tracker by Oneleaf vs Stack

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

AI Calorie Tracker by Oneleaf

Easily track your calorie and macronutrient intake by simply snapping a photo of your meal. Get instant nutritional estimates and set personalized weight loss goals. Log meals in seconds and monitor your progress with visual tools.

Highlights
  • AI food scanning for instant nutrition estimates
  • Calorie, macro, and micronutrient tracking
  • Personalized weight loss goal setting
  • Quick meal logging via photo or search
  • Weight progress tracking and trend visualization
  • Daily calorie budget and macro rings
Features
Read full description

Snap a meal, see the calories. Point your camera at any plate and get calories, protein, carbs, fat, fiber, sugar, and sodium in seconds. Three taps and it's logged. Calorie Tracker by Oneleaf is built around one idea: logging a meal should take three seconds. WHAT YOU GET Snap and track. Point your camera at your plate. AI identifies ingredients and estimates calories and macros instantly. Set your goal. A short quiz about your body, goals, and motivation produces a realistic target weight, a target date, and a daily calorie budget calibrated to you. Macros at a glance. Protein, fat, carbs, fiber, sugar, and sodium, broken down per meal and per day. The home screen distills your day into a single calorie-left number and macro rings. Log in three taps. Add meals by photo, by database search, or from your favorites. Logging takes seconds. Weight progress. Track your weight, watch the trend, stay consistent. Built by Oneleaf. From the wellness team at OneLeaf, a calm and focused tracker for people who want to lose weight steadily. HOW IT WORKS 1. Take a photo of your meal 2. Review the AI's estimate 3. Log it and keep moving PRIVACY FIRST Your food photos are used to generate nutrition estimates and stay private to you. We never sell your data. Read our full policy at oneleafhealth.com/calorie-tracker/privacy SUBSCRIPTION Calorie Tracker is free to download. Full access to AI food scanning, macro tracking, and progress tools requires a subscription. - Monthly: $9.99/mo - Yearly: $34.99/yr (save 71%), includes a 3-day free trial - Payment is charged to your Apple ID at confirmation of purchase, or at the end of the free trial for the yearly plan - Subscription automatically renews unless canceled at least 24 hours before the end of the current period - Your account will be charged for renewal within 24 hours prior to the end of the current period - Manage or cancel your subscription anytime in your Apple ID Account Settings - Any unused portion of a free trial is forfeited when you purchase a subscription Terms: oneleafhealth.com/calorie-tracker/terms-and-conditions Privacy: oneleafhealth.com/calorie-tracker/privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Support: hello@oneleafhealth.com

About

Stack

Features
Read full description

Stack is the supplement tracker that finally looks as good as the rest of your day. Track your vitamins, supplements and medications, get reminders so you never miss a dose, and build a streak that keeps you consistent. No clutter. No noise. Just a calm, beautiful daily ritual that takes seconds. BUILD YOUR STACK Add anything you take in seconds with smart suggestions from a built-in library of vitamins, minerals, supplements and common medications. Everything is organised automatically by time of day. NEVER MISS A DOSE Set gentle reminders around your routine. Mark each one taken with a single tap and watch your day fill in. Morning, midday, evening or night, Stack keeps you on track. KEEP YOUR STREAK Consistency is what actually delivers results. Stack counts your daily streak and celebrates the milestones that keep the habit alive. MEET YOUR ADVISOR Unlock a personal supplement advisor that knows your goals, diet and routine. Get a full review of your stack, spot gaps and interactions, and fine-tune your timing and doses. Ask anything in plain language, and go deeper into the science whenever you want. Add any recommendation to your stack with one tap. PRIVATE BY DESIGN Your data stays on your device. No accounts, no ads, no tracking, ever. Stack Pro unlocks the Advisor with a 7-day free trial, then a simple subscription. Cancel anytime. Stack provides general information about supplements and nutrition. It is not a substitute for professional medical advice, diagnosis or treatment. Always consult a qualified healthcare professional before changing your supplement or medication routine. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

AI Calorie Tracker by Oneleaf4 screens
Stack4 screens

Verdict

The call

AI Calorie Tracker by Oneleaf and Stack are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. AI Calorie Tracker by Oneleaf sells 2 in-app purchases, starting at $9.99 per month and Stack sells 2 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

AI Calorie Tracker by Oneleaf ships an update every 5 days, Stack every 3 days. The most recent releases landed on September 20, 2026 and September 24, 2026 respectively.

ScorecardNo meaningful differences
AI Calorie Tracker by Oneleaf versus Stack: the parameters behind the verdict, then further details
ParameterAI Calorie Tracker by OneleafStack
PriceFreeFree
Rating4.4 (5 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings5 — better—
Update frequencyEvery 5 daysEvery 3 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad — betteriPhone
Requires iOS17.017.0
Further details — not scored
Size84 MB9 MB
Age rating4+4+
DeveloperOneleafHenry Hinge

In-app purchases

2 purchases

AI Calorie Tracker by Oneleaf

Subscriptions2
  • Premium Monthly$9.991 Month
  • Premium Yearly3 Days trial$34.991 Year
2 purchases

Stack

Subscriptions2
  • Stack Pro7 Days trial$5.991 Month
  • Stack Pro7 Days trial$39.991 Year

Questions

Is AI Calorie Tracker by Oneleaf free?
AI Calorie Tracker by Oneleaf is free to download, with in-app purchases available.
Is Stack free?
Stack is free to download, with in-app purchases available.
Do AI Calorie Tracker by Oneleaf or Stack have ads?
Neither AI Calorie Tracker by Oneleaf nor Stack shows ads.
Which is updated more often, AI Calorie Tracker by Oneleaf or Stack?
AI Calorie Tracker by Oneleaf ships an update every 5 days, and Stack every 3 days. Most recently, AI Calorie Tracker by Oneleaf was updated on September 20, 2026 and Stack on September 24, 2026.

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