Jabhook is a boxing training app for Mac that builds your workout, calls out combinations by voice, and coaches you in real time based on how you actually move. The product appeared on Show HN on 8 November 2026. You can read the launch thread at https://news.ycombinator.com/item?id=50414691.
What it is
Most training apps count rounds and play a timer. Jabhook watches you. Computer vision captures your movement in 3D while you train, and compares your biomechanics with a reference library of combinations recorded with professional boxers. A local LLM coach then talks you through the session, calling combinations and correcting your form as you go.
A session works like this: you open the app, the camera watches, and the coach calls the first combination. As you throw it, a skeleton overlay tracks your joints on screen, and the coach compares your movement with the reference form, then calls the next combination. The official demo video shows a full session, with the combo “Jab, Cross, Left Uppercut” displayed as it is thrown.
You can build custom workouts, train with a heavy bag or shadowbox, and hear every combination spoken aloud. Everything is processed on your device, so no video of your training leaves your Mac.
Key features
- Custom workouts built for bagwork or shadowboxing.
- Spoken combinations, called out by voice during the session.
- Real-time coaching based on your movement.
- 3D motion capture with computer vision.
- Biomechanics analysis against a reference library recorded with professional boxers.
- Voice coaching from an LLM that runs locally.
- All processing on-device.
Who it is for
Jabhook fits boxers and martial artists who train alone and want feedback on their form, not just a timer, and coaches who want a second eye on a fighter’s movement. It also fits beginners who want to learn combinations correctly from the start, with a voice telling them what to throw next.
Jabhook runs only on Apple Silicon Macs with macOS 26.2 or later, and needs a webcam or an iPhone as a camera.
Pricing
Jabhook for Mac costs $40 as a one-time purchase, bought through buy.jabhook.ai. No subscription plan is listed on the official site.
Sources and verification: Information in this article is based on the official website (https://jabhook.ai/) and the launch announcement, checked on 9 November 2026. Prices may change; see the official website for current pricing.
Image: jabhook.ai (official demo frame)
