Best Free AI Calorie Tracker Apps in 2026
“Free” can mean a free download, three scans a day, a free API tier, or no photo scanning at all. Here is the practical difference.
Short answer: two of the four are genuinely usable for free. SnapNutrition AI is free with your own AI key and sets no scan cap of its own. SnapCalorie is free for up to three AI logs per day. Cal AI and MyFitnessPal keep photo scanning behind a paid plan. If you want free AI photo logging without a mandatory app subscription, SnapNutrition AI is the strongest fit. If three scans a day are enough and you would rather not set up a key, SnapCalorie is.
This guide is published by the team behind SnapNutrition AI, so it is not an independent review. To keep it useful, the table relies on public product pages, App Store listings, and help documentation, and it states where another app is the better fit. Prices, free allowances, and features can change; follow the source links before choosing.
What “free” means in each app
| App | AI photo access without an app subscription | Best fit | Main tradeoff |
|---|---|---|---|
| SnapNutrition AI | Yes. Use a personal Gemini, OpenAI, Anthropic, or OpenRouter key. Some providers offer free tiers; paid usage is billed by the provider. Optional Auto Mode is $2.99/month or $29.99/year. | BYOK, no SnapNutrition account, Apple Watch, and local-first diary storage | Creating a provider key adds setup |
| SnapCalorie | Up to three AI logs per day according to its official FAQ; premium plans are available for more usage. | A small daily free allowance and a nutrition-focused service | More than three daily AI logs requires premium |
| Cal AI | No. Its App Store listing states that food-scanning analysis requires a subscription. | A polished subscription-first experience with minimal setup | The core scan is behind a subscription |
| MyFitnessPal | No for Meal Scan. Basic logging has a free tier, but official help lists Meal Scan under Premium and Premium+. | A large established food database and broader fitness ecosystem | AI Meal Scan is not included in Free |
What you pay beyond the free tier
| App | Free photo scans | Beyond free |
|---|---|---|
| SnapNutrition AI | No cap from the app when you use your own key. Only your provider's limits apply, and Gemini and OpenRouter offer free tiers. | Nothing, or optional Auto Mode at $2.99/month or $29.99/year if you would rather not manage a key. |
| SnapCalorie | Up to 3 AI logs per day, per its official FAQ. | A premium subscription. Its FAQ does not list the price. |
| Cal AI | None without a subscription. | About $29.99/year on its official listing as of August 2026. Cal AI tests different offers in-app, so check the live price. |
| MyFitnessPal | None. Meal Scan is a Premium feature. | Premium at $19.99/month or $79.99/year as of August 2026. |
Free AI photo logging with no mandatory subscription, on iPhone, iPad, and Apple Watch.
Best for no mandatory subscription: SnapNutrition AI
SnapNutrition AI separates the app from the AI bill. In BYOK mode, you connect a key from one of four supported providers. If the chosen provider has a suitable free tier, the AI requests can cost nothing; otherwise the provider charges for actual usage. No SnapNutrition account is required, and optional Auto Mode is available for people who prefer a conventional subscription and no key setup.
Choose it if control, Apple-device integration, export, and the ability to switch AI providers matter more than a zero-step onboarding flow.
Best for a small daily allowance: SnapCalorie
SnapCalorie says its free access includes up to three AI logs per day. Its App Store listing emphasizes photo and voice logging plus calories, macros, and a wider nutrient breakdown. That can be enough for someone who logs only main meals and wants no API-key setup.
If you are comparing the two directly, read the full SnapCalorie alternative guide.
When Cal AI or MyFitnessPal may be better
- Choose Cal AI if you value an established, subscription-first photo-tracking experience and do not want to configure a provider.
- Choose MyFitnessPal if its database, exercise integrations, community, and broad cross-platform ecosystem matter more than free AI photo scanning.
- Choose manual logging if precise portions matter more than convenience. Every photo-based estimate can miss oils, sauces, and ingredients hidden from the camera.
How to choose an AI calorie tracker
- Check what remains usable after the trial or free allowance ends.
- Confirm whether photo analysis, not merely manual logging, is included.
- Read where food photos and diary history are processed and stored.
- Look for editing and export, because AI estimates will sometimes be wrong.
- Choose the workflow you will actually keep using: photo, barcode, voice, text, or manual entry.
Frequently asked questions
Is there a completely free AI calorie tracker?
Yes, with a condition. SnapNutrition AI is free when you connect your own AI key, and Google Gemini and OpenRouter offer free API tiers, so photo scanning can cost nothing. SnapCalorie is free for up to three AI logs per day. Both free paths have limits set by someone else: your provider's rate limits, or SnapCalorie's daily cap.
Is SnapCalorie free?
Partly. SnapCalorie's official FAQ says it is free for up to 3 AI logs per day. Logging more meals with AI needs its premium subscription, whose price the FAQ does not list.
Is Cal AI free to use?
No. Cal AI's App Store listing states that its food-scanning analysis requires a subscription, so the core photo scan is not available on a free plan.
Does MyFitnessPal scan food for free?
No. MyFitnessPal's free tier covers manual logging and its food database. Its help center lists Meal Scan under Premium and Premium+, and Premium costs $19.99 a month or $79.99 a year as of August 2026.
Sources
- SnapNutrition AI App Store listing
- SnapCalorie official FAQ and App Store listing
- Cal AI App Store listing
- MyFitnessPal plan comparison and Meal Scan FAQ
Want AI food tracking without a mandatory app subscription? Try SnapNutrition AI with your own provider key or optional Auto Mode.
Related reading
- BYOK calorie tracker for iPhone
- Cal AI alternative for iPhone
- SnapCalorie alternative for iPhone
- What makes an AI calorie tracker privacy-first?
- How accurate are AI calorie counters?
- Am I actually in a calorie deficit?
SnapNutrition AI is for general food logging and wellness support. It is not medical advice and should not replace guidance from a doctor or registered dietitian.