VYTL Join the list
In development · Sussex, UK

Know more. Wear less.

A recovery tracker that mounts beneath your watch bracelet, against the skin. Continuous HRV, sleep and recovery data, hidden under the watch you already wear.

VYTL MODULE YOUR WATCH CLASP SKIN CONTACT 45 MM
Footprint 45 × 12 × 5 mm
Weight < 15 g
Battery target 5–7 days
Measures HRV · Sleep · Recovery
01  /  The compromise

Every tracker asks you to give something up.

Smartwatch

Tracks everything, replaces the watch entirely. A screen on your wrist in every meeting, every dinner, every photograph.

Fitness band

Excellent data, obvious hardware. So you double-wrist it, hide it under a sleeve, or take it off when it matters.

Smart ring

Discreet, but it gives up the wrist — and it isn't for everyone's hands, work, or training.

02  /  Architecture

It sits where nobody looks.

01

Mounts at the clasp

The module locates on the bracelet near the clasp, on the underside of the wrist, where the watch already sits closest to the skin.

02

Sensors face the skin

An optical sensor strip reads heart rate and heart rate variability continuously — through the day, through training, through the night.

03

Comes off in seconds

Move it between watches, or into the night band for sleep and swimming. One device, worn continuously, never on display.

03  /  What it measures

Recovery

A single morning read on whether your body is ready to train hard, or ready to rest. No streaks, no guilt, no red rings.

Daily

Heart rate variability

Continuous HRV against your own baseline, not a population average — explained in plain language rather than a raw number.

Continuous

Sleep

Duration, stages and consistency, captured on the wrist you're already wearing or in the night band.

Nightly

Strain

What a session actually cost you, and what that means for tomorrow.

Per session
04  /  Compatibility

Built around the watch, not the other way round.

VYTL is designed to fit the bracelets and straps people actually wear every day. The adapter system is in development now — the first release will support a deliberately narrow set of fittings, done properly, rather than a long list done badly.

  • Steel braceletsIn development
  • Leather & rubber strapsIn development
  • NATO & fabric strapsUnder evaluation
  • Night & swim bandPlanned
  • iOS & Android appPlanned
Join the list

Wear your own watch again.

VYTL is early. We're building in the open, and the list is where the real decisions get shared first — prototypes, fitment tests, and the launch batch before anyone else sees it.