Spartn! vs Onus Strength
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Spartn!
This AI-powered fitness and nutrition app helps users achieve real results by tracking workouts, monitoring nutrition, and following structured programs. It offers real-time insights, personalized AI coaching, and recovery guidance to adapt training to individual progress.
- AI-powered personalized coaching
- Workout and nutrition tracking
- Structured program library
- Real-time performance insights
- Recovery score and guidance
- Meal tracking with barcode scanning
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Spartn — Train Smarter. Stay Consistent. Spartn is an AI-powered fitness and nutrition app that helps you get better results with less guesswork. Track workouts, log meals, and follow trainer-built programs in one place. Connect Apple Watch for real-time heart rate and training intensity insights, then use Recovery Score to know when to push and when to recover. What you can do with Spartn: • Track sets, reps, and weight • Follow structured programs from real trainers • Generate AI workouts tailored to your progress • Log nutrition with barcode scanning, macros, and custom recipes • Monitor steps and daily activity goals • Get personalized coaching feedback and performance insights Spartn Pro includes: • Unlimited AI workouts • Advanced insights and analytics • Voice meal logging • Unlimited custom recipes • Access to premium features Train smarter. Recover better. Stay consistent.
Onus Strength
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Onus: own your workout tracker. No subscriptions. No recurring fees. Pay once, lift forever. Tired of paying yearly just to log your sets? Onus is a complete strength training tracker built for lifters who are done renting their apps. Real Apple Watch Integration Track your workout from your iPhone, your Apple Watch, or both at once — fully synced in real time. Leave your phone in your bag and go watch-only. Leave the watch at home and use just your phone. Or run both together and switch seamlessly mid-workout. Even without your phone nearby, the Watch app starts, logs, and finishes a full workout on its own — including live heart rate and calories, a Now Playing music screen, and a watch face complication for one-tap access. Fast, focused, and lightweight No bloated media slowing things down. Onus is built to open instantly and stay out of your way — with quick links to trusted exercise tutorials whenever you need a refresher on form. A massive exercise library Browse 1,200+ built-in exercises with muscle group and equipment info, plus instructional lookups via YouTube and other trusted sources — or add your own custom exercises for movements or gym equipment that aren't in the catalog. Everything you need to train • Log sets, reps, and weight with a fast, intuitive interface, including live +/- adjusters and a custom keypad • Automatic personal record detection, celebrated with a trophy animation and marked everywhere your best lifts appear • Group exercises into supersets and circuits with round-by-round rest control • Built-in rest timers that keep counting even in the background • Build and reuse custom routines and multi-workout programs, or start from one of Onus's preloaded programs • Track your progress over time with clear history, weekly summaries, and trend graphs for 1RM, top set, volume, and max reps • Export your workout history to CSV, or share programs and workouts with training partners via file import/export • Automatic private iCloud backup, recoverable if you lose or replace your device Built to last, not to bill No subscriptions. No paywalls hiding basic features. No "premium tier" games. Pay once, and Onus is yours — including future iOS compatibility updates. Private by design Onus doesn't collect, transmit, or sell your data. No account, no ads, no tracking — everything lives on your device (and your own private iCloud, only if you choose to back up). If you've ever felt like your fitness app was working against your wallet more than your workout, Onus was built for you.
Screenshots
Verdict
The clearest difference is ads: Onus Strength at none against Spartn!'s shown. On price, in-app purchases, device support and iOS requirement 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. Spartn! sells 3 in-app purchases, starting at $9.99 per month and Onus Strength sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
| Parameter | Spartn! | Onus Strength |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Monthly | — |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, Apple Watch | iPhone, Apple Watch |
| Requires iOS | 16.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 136 MB | 9 MB |
| Age rating | 12+ | 4+ |
| Developer | Clevor | Nathaniel Faiad |
In-app purchases
Spartn!
- Spartn Premium$9.991 Month
- Spartn Trainer Pro$39.991 Month
- Spartn Pro Yearly Subscription3 Days trial$69.991 Year
Onus Strength
- Full Unlock$19.99









