Onyx TenetAI
Point your camera. Get macros.
AI estimation for real meals, nutrition labels, and barcodes. Free to start. No subscription. No account.
No marketing. Only product updates. Unsubscribe any time.
Confidence indicator on every estimate. Edit any value.
AI MEAL ESTIMATION
Photo to macros in seconds.
Aim the camera at a plate. The AI identifies items, estimates portions, and returns calories, protein, carbs, and fat. Every estimate carries a confidence indicator, and every value is editable before you log.
Works with home cooking, restaurant plates, takeaway, and multi-item platters.
AI LABEL SCAN
Packaged food. Label only.
Point the camera at a nutrition facts panel. The AI reads the numbers directly off the label. No database lookup, no ingredient matching, no guessing.
BARCODE
Three million products. Offline after first scan.
OpenFoodFacts powers instant lookups. Results cache locally, so a product you scanned once is yours forever. No internet required on repeat scans.
No AI credit spent. Barcode is the fastest path when the product has a label.
ONYX
Grounded in your data.
Onyx is a precision nutrition copilot. It is grounded in your real food log, your weight trend, and your goals. Ask about a week, a macro, a plateau. Onyx can also take action inside the app: plan a day, generate a recipe, adjust a goal.
No wellness fluff. Neutral tone. Your diary never leaves your device without consent.
THE NUMBERS
Every feature in their paid tier. No subscription required.
| Onyx Tenet | MFP | MacroFactor | Cronometer | |
|---|---|---|---|---|
| Price | Free | Free + $80/yr | $72/yr | Free + $60/yr |
| Privacy / No account | ✓ Fully local | ✗ | ✗ Account req. | ✗ Account req. |
| Adaptive TDEE | ✓ | — | ✓ | — |
| AI Insights | ✓ 13 types | — | Weekly narrative | — |
| Label Scanning | ✓ Photo OCR | — | — | — |
| Body Composition | ✓ Recomp analysis | — | — | Basic |
| Offline | Full | Partial | Partial | No |
| Ads | Never | Yes (free) | No | Yes (free) |
| Barcode scanning | ✓ Free | Premium only | ✓ | ✓ |
BUILT ON PRINCIPLE
The app is yours.
Every feature works offline, forever, with no account. No subscription. No feature gates. Download and start tracking.
Your data stays on your phone.
No account required. Everything lives on your device. Optional cloud backup if you choose. Nothing leaves without your explicit action.
Works without internet.
Log meals on a plane, in a basement, in airplane mode. The app is the database. No server required.
No ads. Not now, not ever.
No banners. No interstitials. No watching a video to unlock your calorie goal. This is a tool, not an ad platform.
Switch Easily
Bring your data with you.
Import your complete food log and weight history from any major calorie tracker. One CSV file, zero data left behind.
MyFitnessPal
Diary.csv
MacroFactor
CSV export
Cronometer
Nutrition.csv
Lose It!
CSV export
Replace or merge · Food logs · Weight history · Instant
FOR EARLY ADOPTERS
THE VANGUARD PROGRAM
Be first. Help shape what ships.
Early access
Get a TestFlight or Play Store link before the public launch. Start tracking weeks ahead of everyone else.
Direct line
Your feedback goes straight to the developer. No support tickets, no bots. Request features, report bugs, and watch them get fixed.
The dev log
See what ships before anyone else. Real-time updates on what changed and why. You'll know what landed before the App Store does.
No marketing. Only product updates. Unsubscribe any time.