The athlete doesn't see this. You do.
Your Apple Watch.Off your wrist.
Moved from your wrist to a low-profile holder at the waist. Every metric captured. Nothing to look at.
Shot on the mat in Brazil. Founder and coach, mid-round. Nothing on the wrist.
Train. We'll measure.
Heart rate, zones, calories and Load through a full class. No screen on your wrist. Nothing to knock, catch or glance at.
Sleep. We'll measure.
Overnight heart rate and HRV from the hip. No light on the wrist. No charge in the morning rush.
Be here now. Look later.
Start on your phone. Then put the phone away. Insight arrives once the session ends.
Technology that knows when to disappear.
Remove the band
Your Apple Watch, as it is. No new wearable.
Clip the holder
Waistband or sports bra. Sensor against skin, 9.6 mm profile.
Start on your phone
One activity, one button. The Watch becomes a sensor.
Train. Then look.
End from your phone. Full summary, saved to Apple Health.
Ready. Pre-flight on the phone: contact, battery, Health. One button.
Active. The phone keeps the clock and a Lock Screen readout. The Watch is a sensor.
After. Duration first, the heart-rate curve, zones, then the grid. Ember on one number.
For a lot of sports, your wrist is fine.
For these, it isn't.
| Activity | Wrist | Waist · 0 | Why |
|---|---|---|---|
| Keep it on your wrist | |||
| Running | Great | — | Free arm, glanceable pace. Nothing to fix. |
| Cycling | Great | — | Hands on bars, screen in view. |
| Swimming | Great | — | Waterproof, stroke detection, laps. |
| Basketball | Good | — | Some contact, but the wrist mostly stays clear. |
| Soccer | Good | — | Feet do the work. Wrist is out of the way. |
| Gym · strength | Good | — | Bar contact is minor. Sets are the point, not HR. |
| Move it to your waist | |||
| Brazilian Jiu-Jitsu | Not allowed | 0 | Wrist is a target, a hazard to your partner, and banned on most mats. Grips break the reading. |
| Boxing · Muay Thai | Under a wrap | 0 | Gloves and wraps cover the wrist. Impact ends the watch. |
| Wrestling · Judo | Not allowed | 0 | Same as BJJ. Nothing hard on the body. |
| Ballet | Wrong | 0 | A watch on a dancer's wrist is a costume error. The line matters. |
| Performance arts | Wrong | 0 | On stage, nothing on the wrist. Under the costume, everything measured. |
| Pilates · Barre | Awkward | 0 | Wrists load in planks and on the reformer. A watch digs in. |
| Sleep beta | Fine, but lit | 0 | No light on the wrist. No charge in the morning rush. |
0 isn't a replacement for your wrist. It's for the hours when your wrist is the wrong place.
You train them. 0 shows you how they're holding up.
A read-only web dashboard for verified coaches. Load, recovery and zones for every athlete who shares with you, per athlete and across the team.
Your first 3 sessions are on us.
- Unlimited tracked sessions
- Recovery, Load, history, trends
- Sleep beta
- Apple Health, Calendar, Strava
- Free 0 Holder + roll of 0 Tape
- Unlimited tracked sessions
- Recovery, Load, history, trends
- Sleep beta
- Apple Health, Calendar, Strava
- Holder and Tape sold separately
Move it somewhere you can forget about it.
Register your interest. One email when 0 and the holder are ready. Nothing else.
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