Comparison September 2026 · 8 min read

Last updated: September 2026. Prices are standard US App Store prices at the time of writing and vary by region and promotion.

How we compared

We looked at each app on five criteria that decide whether people keep tracking past week two:

1. Input methods. Photo, video, voice, barcode, text, manual search. More methods means fewer skipped meals.
2. Metrics tracked. Calories and three macros is the floor. Fiber, sugar, salt, water and activity are what actually explain how you feel.
3. Photo accuracy. Based on published studies and independent 2026 benchmarks, not marketing claims. Every photo app is an estimate; the question is how the app handles that.
4. AI coaching. Does the app tell you what to change, or only show you what you did?
5. Price and free tier. What you get without paying, and whether the paywall is honest.

The short comparison table

1. CalMePlease — best if you want the app to think, not just count

CalMePlease is built around a different premise than most trackers: the number on the plate is the input, not the output. You log a meal by photo, a short video, voice (in any of nine languages), barcode or plain text, and the app returns ten metrics per meal — calories, protein, carbs, fat, fiber, sugar, salt, water, activity from Apple Health, and an AI score for the day as a whole.

What sets it apart is the built-in AI coach. It watches the whole day, not the single meal, and tells you what to eat next: low on protein by lunch — it suggests adding it at dinner; sugar doubling on weekends — it points that out before the pattern sets in. Most trackers show you a red number at 11 pm. This one intervenes at 2 pm.

Strengths: four ways to log with no database scrolling, ten metrics instead of four, proactive coaching, nine languages with no translation layer, meal history stored on your device.

Limits: iOS only (iOS 15+), a smaller user base than the giants, and a young app that is still adding integrations.

Price: free to download, subscription from $2.99/month.

2. Cal AI — best for the fastest photo-to-number loop

Cal AI made photo logging mainstream: point the camera, get calories and three macros in seconds. The interface is minimal — a home widget with calories, protein, carbs and fat remaining, a weekly bar chart, BMI. Since its acquisition by MyFitnessPal in early 2026 it has access to the 20-million-item MFP food database, which improves barcode and search results.

Strengths: very fast, clean UI, cheap on the annual plan.

Limits: free tier is search and barcode only — the AI scan requires a subscription after a 3-day trial that needs a card. Pricing is dynamic: users report anything from $19.99 to $49.99 a year for the same features. Tracks four macros by default; vitamins and minerals are manual entry. No coaching — you get the number and decide yourself. Cal AI's own FAQ puts photo accuracy at roughly 80%, and independent tests found it tends to underestimate.

3. MyFitnessPal — best database, most cluttered experience

MFP has been the default for 15 years and its database is unmatched: 20 million foods, 68,000 brands, 380+ restaurant chains. If a packaged product exists, someone has logged it. In 2026 it added Meal Scan, Voice Log and a ChatGPT Health integration, and it now owns Cal AI.

Strengths: the database, the community, the integrations with almost every fitness device.

Limits: most of what makes it usable in 2026 — barcode scanning, photo scan, voice log, ad-free — sits behind Premium at around $79.99 a year, the most expensive in this list. The free tier has ads and manual search only. The interface is dense; expect settings menus with a dozen toggles before you log your first meal. Insights are descriptive, not prescriptive.

4. Yazio — best for Europeans and intermittent fasters

Yazio is a German app (Erfurt) with the best European packaged-food database in the category and a genuinely good intermittent fasting tracker built in. Around 28 nutrients tracked, a large recipe library, clean design.

Strengths: European brands, fasting tools, cheapest paid tier among the big names.

Limits: photo recognition exists but is Pro-only and reviewers consistently rate it as a search shortcut rather than a real AI feature — roughly ±20% in independent testing. No voice input. No coaching. Barcode scanning is also Pro-only.

5. Cronometer — best for micronutrient nerds

If you want to know your zinc, B12 and omega-3 intake to the milligram, Cronometer is the answer. 80+ nutrients, lab-grade data sources, weighed portions. It is also the most accurate app in benchmark tests — because you weigh everything.

Limits: no photo logging at all. It is a tool for people who already own a food scale and enjoy using it.

6. Lose It! — familiar, but no longer cheap

Lose It! was the budget MFP alternative for years. In 2026 it raised Premium to $79.99, level with MFP, while offering a smaller database. Photo scan (Snap It) is Premium-only. Fine if you already use it; hard to recommend to a new user.

7. MacroFactor — best for adaptive calorie targets

MacroFactor's algorithm adjusts your calorie target weekly based on actual weight change, which is the smartest approach to a deficit or surplus on the market. Logging is fast and includes photo and voice.

Limits: no free tier at all, tracks calories and macros only, and it assumes you already know what fiber and salt do to you. Best for experienced trackers with a specific body-composition goal.

Which one should you pick

• You quit trackers because logging is a chore → CalMePlease or Cal AI. Both log in seconds. CalMePlease adds video, voice in nine languages and a coach; Cal AI is a purer photo-to-number tool.
• You want to understand why you feel tired, hungry or bloated → CalMePlease. It is the only app in this list that tracks fiber, sugar, salt and water as first-class metrics and tells you what to change.
• You need a specific packaged product found every time → MyFitnessPal (US) or Yazio (Europe).
• You do intermittent fasting → Yazio.
• You want clinical-grade micronutrient data → Cronometer.
• You want the algorithm to set your calorie target → MacroFactor.
• You are on a tight budget → CalMePlease at $2.99/month or Yazio Pro annual.

A note on "accuracy"

No photo-based app is exact. Peer-reviewed studies put image-only estimation at roughly 15–30% mean error, dropping to under 15% when the user adds a short description. That is comparable to how badly humans guess by eye. The practical difference between apps is not whether they are perfect but whether they let you correct the estimate quickly and whether they use multiple inputs (photo plus text plus barcode) to narrow the error. Read our full breakdown: How accurate is AI calorie counting by photo?

FAQ

Which AI calorie tracker is free? Every app here is free to download. Truly free AI photo scanning is rare: Cal AI, Yazio, MFP and Lose It! all put it behind a subscription. CalMePlease has a free tier with paid plans from $2.99/month.

Do AI calorie apps work on Android? MyFitnessPal, Yazio, Cal AI, Lose It!, Cronometer and MacroFactor are on both platforms. CalMePlease is currently iOS only.

Is it safe to send photos of my food to an app? Every photo-recognition app processes images on a server. The difference is what is stored. CalMePlease keeps meal history, weight and statistics on your device and does not sell or share data; check each app's privacy label in the App Store before deciding.

Can an AI tracker replace a dietitian? No. It replaces the notebook and the guesswork. If you have a medical condition, are pregnant, or have a history of disordered eating, talk to a professional before changing how you eat.

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CalMePlease is free on the App Store. Download it here and log your first meal in about three seconds.