Onyx Tenet: Calorie Tracker
Adaptive TDEE. AI macros.
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Snap food, get macros instantly with AI. Adaptive TDEE that learns your real metabolism. Barcode scan, recipes, analytics, all on your device. No ads.
Onyx is the calorie tracker that learns.
Your real burn rate, recalibrated every day from your real intake and your real weight. While other apps lock you to a formula on day one, Onyx watches what your body actually does and adjusts. The longer you use it, the more accurate it gets.
LOGGING THAT GETS OUT OF THE WAY
Snap a photo of your plate. Scan a barcode. Type "two scrambled eggs and a banana." Onyx fills in the macros in seconds. Save the meals you eat every week and log them with one tap. Tracking stops being the thing you give up on.
A COACH THAT READS YOUR DATA
Onyx Chat answers from your actual logs, not generic advice. Ask "did I hit protein this week," "when was my biggest deficit day," "why did my weight plateau." Real numbers, in plain language, on demand.
BUILT FOR PEOPLE WHO WANT RESULTS
No streaks holding you hostage. No rings to close. No notifications nagging you back. Onyx is calm, monochrome, and built to disappear once the entry is logged. The numbers do the talking.
PRIVATE BY DEFAULT
Your data stays on your device. No ads. No data sales. No third-party tracking. Turn off analytics in Settings and Onyx stops collecting them. Full stop.
YOUR LANGUAGE
Available in 14 languages, including Spanish, French, German, Japanese, Korean, and both Chinese variants.
WHAT'S INSIDE
• Adaptive daily calorie and macro targets
• Photo, barcode, and natural language food logging
• Custom recipes and saved meals
• Weight tracking with trend analysis
• AI coach grounded in your real data
• Apple Health sync for weight and activity
• Home Screen widget for your day at a glance
• Local-first storage with backup and restore
• Light and dark themes, multiple accents
• 14 languages
Onyx. The tracker that adapts to you.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, AAI Labs, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Health & Fitness
- Contact Info
- Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- User Content
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- AAI Labs LTD
- Size
- 25.4 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 18.4 or later.
- iPhone
Requires iOS 18.4 or later. - Mac
Requires macOS 15.4 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.4 or later.
- iPhone
- Languages
English and 13 more
- English, Dutch, French, German, Indonesian, Italian, Japanese, Korean, Portuguese, Romanian, Russian, Simplified Chinese, Spanish, Traditional Chinese
- Age Rating
9+
- 9+
- Contains
Health or Wellness Topics
- Copyright
- © 2026 AAI Labs