EN13319 certified · ZH-L16C

Turn your Apple Watch Ultra
into a real dive computer.

Pro Dive runs a full 16-compartment Bühlmann tissue model, live depth and ascent rate, multi-gas planning and CCR support — all on the watch you already own. No extra gear. No signal. Just dive.

Download on the
App Store See features
EngineZH-L16C
GasesAir · Nx · Tmx
LogsAuto· iCloud
Apple Watch Ultra running the Pro Dive dive computer face
Apple Watch Ultra · running Pro Dive
01 · The dive computer

Everything a dedicated dive computer does — running on your wrist.

Decompression model16 compartments
ZH-L16C+ GF

Bühlmann with gradient factors

A full 16-compartment tissue model updates continuously throughout the dive — the same engine used in dedicated dive computers, with conservatism you control via gradient factors.

Live readouts1 Hz
Depth · NDL · TTS

Real-time, every second

Depth, no-deco limit, deco ceiling, time-to-surface and ascent rate update live, with a smart-averaged ascent indicator and haptic warnings when you push too hard.

GasesMulti
Nx · Tmx

Multi-gas, Nitrox & Trimix

Plan and switch between bottom, deco and bailout mixes without leaving the watch.

CCRClosed-circuit
PPO₂

Fixed setpoint & bailout

Closed-circuit support with fixed PPO₂ setpoint and on-the-fly bailout to open circuit.

CompassHeading
360°

Underwater compass

Tap the action button for a clean heading display when you need to navigate the wreck.

LogsAutomatic
/ /

Every dive, logged automatically

Submersion is detected automatically. Profile graph, max depth, duration, min/max temperature, GPS location with reverse geocoding — all synced to iPhone, optionally to iCloud.

ConnectivityIndependent
Offline

Works without a phone in range

Every calculation runs on the watch. Leave the phone in the dry box — your dive logs and tissue model keep running. They sync the moment you're back on the boat.

"

I built Pro Dive because I wanted a dive computer that respected the diver. Same maths as dedicated dive computers. Same standards. None of the wrist real-estate of a second computer. Just the watch you already trust.

— The team at Millennium Diver-built · Indie · Malta
StandardEN 13319
Tissue modelZH-L16C + GF
SensorApple Watch Ultra
Update rate1 Hz live
LogsLocal + iCloud
PrivacyNo personal data collected
02 · The toolkit

Pro Dive plays nicely with the rest of your kit.

Two more apps from the same team — plan your gas before the dive, plan the dive itself.

Gx

Gas Blender

Calculate Nitrox & Trimix blends with Ideal-Gas or Van der Waals math, see MODs based on PPO₂, narcosis and gas density, save your common mixes.

iOSAndroidiPad
Open Gas Blender →
Dx

Easy Deco

Decompression dive planning for OC and CCR. Cylinder pressure requirements, reserves, ICD warnings, gas density — built for tech divers.

iOSAndroidiPad
Open Easy Deco →
03 · On the wrist & in the pocket

A clean iPhone companion. A serious watch app.

Pro Dive — Apple Watch Ultra dive computer
Pro Dive iPhone — dashboard
Pro Dive iPhone — dive detail with depth profile
Pro Dive iPhone — logbook
Pro Dive iPhone — dive sites map
Safety notice 04 / SAFE

Pro Dive is a tool for trained divers. Always dive within your training.