Automatically counts your reps for exercises like squats, push-ups, and pull-ups using your phone's camera. It records each set, stitches the footage into a shareable timelapse, and offers built-in and customizable challenges for accountability.
2.0.14
August 14, 2026
Performance improvements
Export in 4K
Thanks for the feedback! The latest update includes improvements to push-up tracking — give it a try and let us know how it goes. Hope pull-ups and sit-ups work well for you too!
Tetsuo uses your phone's camera and on-device motion tracking to detect and count your reps for exercises like squats, push-ups, and pull-ups automatically. You simply set up your phone and perform your workout without needing to tap or manually log.
Yes, Tetsuo records every set you perform. It then automatically trims the footage to the action and stitches it into a short, sped-up timelapse with your rep count overlaid, ready for sharing.
Absolutely. Tetsuo creates a share-ready timelapse of your workout that you can customize in terms of look and speed. You can then save it or share it directly to platforms like Instagram or TikTok.
Tetsuo prioritizes privacy with features like face hiding, which automatically blurs or pixelates faces in your workout clips. All data, including rep counting and video, stays on your device, and no account is required.
Tetsuo includes built-in challenges like 'DAY100' and quick daily tests. You can also create your own custom challenges by selecting exercises, daily goals, and duration, and share them with friends for mutual accountability.
No, Tetsuo does not contain advertisements. The app is free to use with optional in-app purchases for premium features.
Tetsuo offers a 'DAY100 Plus' subscription at $2.99 per month or $17.99 per year, both including a one-month free trial. These plans likely unlock additional features or content beyond the free offering.
Tetsuo is currently supported on iPhone devices. The app was last updated on August 5, 2026, with version 2.0.11.
