AI · alternatives · 2026

24 alternatives to Onyx

The fitness app that watches you

Onyx is a fitness app that uses a smartphone camera to monitor workout performance. It automatically counts repetitions, analyzes exercise form, and adjusts audio guidance in real time based on user performance. The… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Onyx launched in 2019; newer entries below may have overtaken it.

1. 1
   GymTracker▲192

   An app to track your gym progress and record your exercises

   2024 · kreatordev.com · its alternatives →

2. 2
   Sets Workout App▲112

   The easiest way to track your workouts

   2024 · setsworkout.com · its alternatives →

3. 3
   Hevy▲470

   Log your workouts, track your progress & follow your friends

   2023 · hevyapp.com · its alternatives →

4. 4
   RocketBody▲250

   ECG Workouts

   2018 · gorocketbody.com · its alternatives →

5. 5
   FitAction▲440

   AI personal trainer, calorie counter, nutrition & yoga

   2024 · fitaction.app · its alternatives →

6. 6
   x100▲187

   App that counts

   2021 · apps.apple.com · its alternatives →

7. 7
   Gyminize▲175

   Tracking your workouts just got fun

   2018 · its alternatives →

8. 8
   WorkoutMe▲327

   1:1 live workouts with a random partner from all over the 🌎

   2020 · workoutme.app · its alternatives →

9. 9
   Onyx Coach▲13

   Workout tracker

   2025 · onyxcoach.com · its alternatives →

10. 10
    OnyxLife▲1

    Track workouts, periods, habits, and tasks — all in one app

    Mar 2026 · onyxlife.app · its alternatives →

11. 11
    iOS app that corrects your form in real time using your phone's camera▲45

    My friends and I made an app that uses your phone's camera to track and improve your form. It'll give you visual and verbal feedback for every rep in real time, ensuring accountability. https://apps.apple.com/us/app/firefly-fitness/id6464440707 (No, we don’t store or view any camera footage as you're working out.) The challenges and programs are free to try, no sign-ups or subscription required. (We do ask that you sign-up to save your stats). Just swipe down on the paywall. As a heads up, challenges and programs have pre-set strictness, so you’ll need to…

    2025 · firefly.fitness · its alternatives →

12. 12
    Runervals▲90

    Automatically track your running intervals

    2021 · apps.apple.com · its alternatives →

13. 13
    FitHero 2.0▲92

    Your new gym workout tracker, now in iOS & Android

    2021 · fithero.app · its alternatives →

14. 14
    Kegel Coach▲90

    A kegel exercise app for Apple Watch

    2019 · apps.apple.com · its alternatives →

15. 15
    Gym Hero ▲176

    The future of gym tracking—private, smart, on-device AI

    2025 · apps.apple.com · its alternatives →

16. 16
    Athlytic▲58

    AI health & fitness coach

    2021 · apps.apple.com · its alternatives →

17. 17
    SmartWorkout▲74

    The most convenient app to track your workouts

    2023 · smartworkout.app · its alternatives →

18. 18
    Setify▲136

    Your simple gym workout tracker

    2024 · josip.app · its alternatives →

19. 19
    Train Fitness▲125

    Automatic exercise detection & rep counting using AI

    2021 · motra.com · its alternatives →

20. 20
    Gravitus▲97

    The app for lifters 💪

    2016 · its alternatives →

21. 21
    Whistle▲117

    A fitness coach with personalized plans

    Jun 2026 · apps.apple.com · its alternatives →

22. 22
    Fitic▲71

    Workout with your favorite fitness creators

    2021 · its alternatives →

23. 23
    RepStandard▲99

    Computer vision counts your reps in real time

    Jul 2026 · apps.apple.com · its alternatives →

24. 24
    Atlon▲64

    Automatic Functional Fitness Tracking with Apple Watch

    2023 · atlon.app · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →