# Tetsuo: Bodyweight workouts — Track & share with friends

> Automatic rep counting camera app with video recording and shareable timelapses. (iPhone/iPad app by Tem Ab.)

- Source: https://appshunter.io/ios/app/tetsuo-bodyweight-workouts/id6744286523 (this page in markdown: same URL + `.md`)
- Developer: [Tem Ab](https://appshunter.io/developer/1674405256)
- Category: Health & Fitness, Sports
- Price: Free with in-app purchases
- Rating: 4.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 18.0 · 53 MB
- Languages: American English
- Released: 2025-10-03
- Data updated: 2026-08-21
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/tetsuo-bodyweight-workouts/id6744286523/reviews.md

## What is Tetsuo?

TETSUO is a workout tracker that watches you train. Prop up your phone, hit Start Workout, and go — the camera recognizes what exercise you're doing, counts every rep out loud, times your rest between sets, and grades your training over time. No wearables, no tapping between sets, no manual logging.

ONE BUTTON. THAT'S IT.
There's no exercise picker and no setup flow. Start a workout, walk in front of the camera, and start moving. TETSUO detects the exercise from your body's motion, and by the time it announces your set, the reps you already did are counted — it was watching from the first rep. When you stop, the set saves itself and a big rest timer takes over, readable from across the room.

WHAT IT COUNTS
• Squats
• Push-ups
• Pull-ups
• Sit-ups
• Hanging leg raises
• Plank — held seconds, timed automatically

Rep detection runs on real body geometry — joint angles, not guesswork — so cheat reps, walk-bys, and warm-up shuffling don't count. Audio cues confirm every rep so you never have to look at the screen. Finish a set hands-free: just walk away, drop off the bar, or cross your wrists overhead.

EARN YOUR RANK
Every workout is scored, and your recent training rolls up into a letter rank — from F all the way to S+. Reps are bucketed into muscle groups (push, pull, legs, abs), a quality day means really working a group, and rest days are built into the system — because recovery is training too. Your rank reflects what you've done lately, not what you did last year.

YOUR TRAINING, VISIBLE
The home screen is a day-by-day timeline of your training — every workout graded, every rest day honest. The Stats screen adds lifetime totals, per-exercise charts, records, and a training calendar.

HIGHLIGHT CLIPS
TETSUO keeps a short rolling buffer in memory while you train and offers up to three 4–6 second highlight clips of your best reps after each workout. Save the ones you like to Photos, share them, or dismiss them — nothing is kept unless you say so.

PRIVATE BY DESIGN
Everything runs on your iPhone. Pose detection is fully on-device, no video is ever recorded to disk during your workout, and your workout history never leaves your phone. The camera is a sensor, not a surveillance system.

SMART ABOUT THE REAL WORLD
• Pick up your phone mid-workout? TETSUO pauses and quietly re-arms when you set it back down.
• Step out of frame for a set? The summary flags the gap so you can log it honestly.
• Rest as long as you need — an optional rest target gives you a single soft ping.
• The screen stays awake for the whole session.

No subscriptions required to count reps. No account. No wearable. Just you, your phone, and the work.

Privacy: https://www.tem.dev/d100-privacy-policy.pdf
Terms: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Key features

- Automatic rep counting via camera
- On-device motion tracking
- Video recording of each set
- Shareable timelapse creation
- Built-in and custom challenges
- Face blurring for privacy
- No account required

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| DAY100 Plus | $2.99 | per month |
| DAY100 Plus | $17.99 | per year |


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/tetsuo-bodyweight-workouts/id6744286523/reviews.md

### 4/5 — Honest review

*2026-08-06*

Picks up the squats perfectly. But doesn’t pick up all the push ups. Haven’t done the pull-ups or sit-ups yet.  I do like it, but wish it’d pick up all the reps on push-ups.

**Developer response:** 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!

## Frequently asked questions about Tetsuo

### How does Tetsuo count my reps?

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.

### Does Tetsuo record my workouts?

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.

### Can I share my workout videos from Tetsuo?

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.

### What privacy features does Tetsuo offer?

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.

### What kind of challenges are available in Tetsuo?

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.

### Does Tetsuo have ads?

No, Tetsuo does not contain advertisements. The app is free to use with optional in-app purchases for premium features.

### What are the subscription options for Tetsuo?

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.

### What devices does Tetsuo support?

Tetsuo is currently supported on iPhone devices. The app was last updated on August 5, 2026, with version 2.0.11.

## Version history (last 5 releases)

### 2.0.14 — 2026-08-14

Performance improvements

### 2.0.13 — 2026-08-09

• Autonomous workouts — one Start button. TETSUO detects which exercise you're doing, counts from your very first rep, ends sets on its own, and times your rest automatically. No picker, no calibration, no prompts.
• Plank support — hold a plank anywhere in frame and TETSUO times it, pausing the clock if your form breaks. Palms or forearms, any angle.
• Hanging leg raises — the bar now counts more than pull-ups.
• Training rank — every workout is scored and your recent training earns a letter rank, F through S+, balanced across push, pull, legs, and abs. Rest days count for you, not against you.
• New home timeline — your training history as a graded day-by-day feed, with your current rank up top.
• Stats overhaul — lifetime totals, per-exercise charts, records, and a calendar.
• Highlight clips — get up to three short clips of your best reps after each workout, saved only if you want them.
• Pickup pause — grab your phone mid-session and TETSUO pauses, then re-arms when you put it back.

### 2.0.11 — 2026-08-05

Improved sound cues.
Additional stats.

### 2.0.10 — 2026-08-04

Plank exercise.
Improved Stats screen.
Optional recording.
Improved end state detection.

### 2.0.9 — 2026-07-31

New name "Tetsuo" (prev. DAY100)
Performance improvements and bugfixes.

## Apps similar to Tetsuo

| App | Rating | Price | Category |
| --- | --- | --- | --- |
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| [RepVision AI Gym Rep Counter](https://appshunter.io/ios/app/repvision-ai-gym-rep-counter/id6755109937) | — | Free | Health & Fitness |
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All apps by Tem Ab: https://appshunter.io/developer/1674405256

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-21.*