Current Version

A view of the application

Metrics Screen

All critical information on a single screen

Dive, recovery and cumulative time on a single screen

More information »

Immersion view

Immersion detection

Automatic. Focus on apnea.

Compatible with Garmin Fenix 3, immersion is detected and related timers triggered.

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Cadence view


Vibrations. Focus on apnea.

Cadence vibrations can be set for recovery or immersion.

More information »

Just one single screen.

One single screen with all critical information :

  • Recovery Time
  • Dive time
  • Cumulated recovery + dive time
  • Heart rate
  • Current depth
  • Cycle count
  • Dive direction indicator (up / down)
A view of the application

A view of the application

Forget your watch. Focus on apnea.

Altitude sensor used for immersion detection and current depth.

Dive time triggered automatically by preset depth: 0.3m, 1m or 1.5m.

Stay informed during your dive

Vibration alerts diver if too fast or too slow.

Set interval in seconds for timed alert during dive or recovery.

Cadence view

Settings view

All settings at a fingertip.

Fine-tune your workout

  • Activity recording
  • Starting time setup (dive or recovery)
  • Toggle alert backlight
  • Immersion detection
  • Dive detection depth setup: 0.3m, 1m or 1.5m.
  • Interval alert setup for immersion: Off, 10", 20", 30", 50", 1', 2'
  • Interval alert setup for recovery: Off, 10", 20", 30", 50", 1', 2'


Apnea app is currently compatible with this devices:

Without depth measurement:

  • Forerunner 230
  • Forerunner 235
  • Forerunner 630
  • Forerunner 735XT

With depth measurement:

  • D2 Bravo
  • D2 Charlie
  • Descent MK1
  • Forerunner 920XT (3m limitation)
  • Forerunner 935
  • Fenix 3 (15m limitation)
  • Fenix 3 HR
  • Fenix Chronos
  • Fenix 5, Fenix 5 Plus
  • Fenix 5S, Fenix 5S Plus
  • Fenix 5X, Fenix 5X Plus
  • Vivoactive 3
  • Soon, other models supported

I want to use it !

Apnea is freeware. Please consider a donation to support its development.