Cronometer
by Cronometer Software Inc.
Confirmed to have real AI photo and voice logging, contradicting an earlier third-party claim that it lacked AI features entirely — its real differentiator is micronutrient depth (up to 95 nutrients) from a lab-verified database.
✓ Last verified July 2026
What it is
A rigorous nutrition tracker built around a lab-analyzed, verified food database covering up to 95 nutrients and compounds — favored by users who want precise micronutrient data rather than just calories. It does include AI-powered logging (photo recognition and voice control via Siri), alongside exercise/biometric tracking, custom recipes, and reports. It syncs with an unusually broad device list: Fitbit, Withings, Oura, Apple Health, Health Connect, Keto-Mojo, Garmin, Suunto, Polar, Whoop, Dexcom, and Google Health. Free tier available Gold subscription is $10.99/month or $4.99/month billed annually ($49.99/year). A separate Cronometer Pro tier serves healthcare workers, researchers, and educators.
Key features
- Lab-verified database covering up to 95 nutrients/compounds
- AI photo and voice (Siri) food logging
- Broad device integrations (Dexcom, Whoop, Garmin, Oura, and more)
- Custom meals/recipes and detailed reports
- Cronometer Pro tier for professionals
Best for
People who want rigorous, lab-verified micronutrient tracking rather than just calorie counting.
Pricing
Free tier Gold $10.99/month or $4.99/month billed annually ($49.99/year).
Integrations
- Fitbit
- Withings
- Oura
- Apple Health
- Google Health Connect
- Keto-Mojo
- Garmin
- Suunto
- Polar
- Whoop
- Dexcom
Useful for
Other diet trackers
The most generous free tier in the category — but its AI features (photo/voice logging) are entirely gated behind Premium, unlike free-AI competitors like SnapCalorie.
A specifically privacy-first stance — no data sold to advertisers or brokers, ad-free, user choice of storage location — combined with an AI logging feature users call out as unusually good.
Supports four distinct logging modes (photo, voice, text, barcode) in one flow, giving users flexibility rather than forcing one input method.