For Freedivers & Scuba Divers

Hold longer.
Stay calm when it counts.

Dry-land breath training built by divers, for divers, whether you freedive on a single breath or run a tank on scuba.

Extend your breath-hold on dry land.
Build the discipline panic can't break.
Train in five minutes a day.
Download on the App Store
One payment. No subscription. No account.

Certifications teach you to dive. They assume you can manage your breath when it goes wrong.

15%
of scuba deaths start with an equipment problem to solve underwater
55%
of breath-hold diving deaths involve asphyxia underwater
1 in 5
breath-hold deaths follow divers pushing their limits or hyperventilating first
Sources: Divers Alert Network; Diving and Hyperbaric Medicine fatality data

Train the breath your certification assumes you have.

1
Pick a mode
Box, CO₂ table, O₂ table, cadence, guided breath-up.
2
Follow the circle
Timed visual guidance, no counting.
3
Track the gain
Every hold logged. Watch your personal best climb.
Built For Depth

Not a streak tracker. A training tool.

Profile & biometrics, full history with personal bests, and granular control over every protocol, plus an advanced track for equalization, pre-dive routines, static apnea, and dive-reflex conditioning.

History & PRs: every hold logged, progress you can see.
Equalization training: Valsalva, Frenzel & mouthfill.
Dry-land safety guidance built into every screen.
Deep Breath settings: profile, biometrics, history and PRs
Deep Breath advanced training: equalization, pre-dive routine, static apnea, dive reflex
What No Timer Does

Anyone can hold their breath calm and still. Can you hold it under load?

Quiz Mode drops questions into your session mid-hold, the same cognitive overload that triggers panic on a real dive. You're not just training your lungs. You're training the part of you that has to keep breathing when something goes wrong.

From the App Store

Divers are already training with it.

5.0 on the App Store
★★★★★
Cut my air consumption on every dive
The Air Save mode is a 1:2 inhale-to-exhale trainer and it genuinely improved my SAC rate. Practiced 10 minutes a day for two weeks before a liveaboard and my air lasted noticeably longer on every dive. The breathing circle and phase beep keep you on cadence perfectly. Simple concept, gets results.
Brfergus · United States
★★★★★
Invaluable
I've just gotten into freediving and found the whole breathing part really intimidating (because I was rubbish at it!). I've since improved so much and I have this app to thank for it. Daily practice is a must and DeepBreath makes that easy and fun, so I actually want to practice! Thank you!!
Big5768 · United Kingdom
★★★★★
Helpful to get back into diving after some time off
I've found this app really helpful to prepare for getting back into diving after years away from proactively diving for recreation and work.
neilsonLM · United Kingdom

Buy it once. It's yours.

No subscription No in-app purchases No account, no tracking, no servers

Every other breathwork app rents you your own progress. Deep Breath is a one-time purchase that lives on your device, forever. Your training data never leaves your phone.

Download on the App Store
One payment. Yours for good.
Safety

We take this seriously, so the app does too.

Dry land only. I will never use Deep Breath in, on, or near water.
I will stop immediately if I feel lightheaded, dizzy, or unwell.
I understand breath-hold training carries risk and I train at my own discretion.
I will consult a physician before training if I have any cardiovascular or respiratory condition.

Your next dive is calmer than your last.

Download on the App Store
One payment. On your device. Always with you.