Onyx Tenet vs Plates
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Onyx Tenet
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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.
Plates
This app offers a streamlined way to log workout sets and reps, focusing on simplicity for users who prefer a notepad-like experience. It provides clear progress tracking with charts and allows for custom exercises and workout splits without unnecessary features.
- Log sets and reps quickly
- Track progress with charts
- Customizable exercises and splits
- Clean, distraction-free design
- Workout history and review
- No learning curve
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Built for lifters who want less tapping and more training. No bloat, no clutter — just a fast way to log sets, reps and weight and watch your numbers go up. Completely ad-free. Your workout data never leaves your device. Tired of gym apps that do too much? Most apps pack in calorie tracking, instructional videos, leader boards and recommendations you'll never use. Plates does one thing well: log your workout and track progress. No guidance, no hand-holding. It's built for people who already know what they're doing and want a tool that stays out of the way. Fast logging, real history - Quick to use. Open, pick your split, log sets and reps. - Clean, modern design. A focused layout so you can log and review without distraction. - Last time, right there. Every set shows the weight and reps you did last session, so you always know what to beat. - Train your way. Switch between hypertrophy and strength focus to match how you're training. - Graphs and progress. Track volume and strength over time with clear, straightforward charts. - Customisation. Add and edit exercises and build splits that match how you train. - No learning curve. Open it and start logging. Built for people who keep it simple You don't need another app that tries to do everything. You need something that gets out of the way and lets you log your workout. Plates is for lifters who've bounced off other apps because they're too heavy or too complicated. No accounts. No cloud for your training. Your workouts stay on your device.
Screenshots
Verdict
The clearest difference is iOS requirement: Plates at 16.2 against Onyx Tenet's 18.4. On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Onyx Tenet ships an update fortnightly, Plates every 2 weeks. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.
| Parameter | Onyx Tenet | Plates |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 2 — better |
| Update frequency | Fortnightly | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone | iPhone |
| Requires iOS | 18.4 | 16.2 — better |
| Further details — not scored | ||
| Size | 28 MB | 65 MB |
| Age rating | 4+ | 4+ |
| Developer | AAI Labs | David Thomson |
In-app purchases
Onyx Tenet
No in-app purchases
Plates
No in-app purchases









