Guided breath-hold training for freedivers – including a personal training plan, for iPhone and Apple Watch.
Calm, precise and entirely focused on the breath – the way freediving should feel.
Follow precisely timed inhale and exhale phases. Visual lung feedback and gentle audio cues guide you through every session – free of distraction.
Progressive tables adapt to your progress. Track personal bests, streaks and depth goals – day by day, breath by breath.
Each session takes you a little further. Track your depth, hold your calm and watch your limits sink lower – one breath at a time.
Keep your streak alive and unlock collectible badges for every milestone – from your first hold to legendary depths.
4.8 out of 5 stars from more than 705 reviews – continuously refined since 2010.
I appreciate the simple structure — no subscription required, but a lifetime unlock at a fair price is possible! Great for tracking progress and advancing your diving!
I'm genuinely thrilled. I've had the app for many years now, and it's still being actively developed. I really like the streak system, but the personal training plan is amazing. Bring on the Blue Hole this autumn 😊
Easy to understand, and results come after just 3–4 sessions 👌🏼
This app has helped me with relaxation and also reducing my snoring and sleep apnea through better utilization of O2 and CO2.
Exactly the app I was looking for. You make great progress. Thank you!
I'm a yogi and have been doing pranayama for some time. And now, exploring freediving. I've been checking out these breath apps for a bit. Everyone annoyed me and I just went back to the “real thing.” This app, actually, is the real thing. It's better than a guided meditation. It's a super incremental challenge. I'm excited enough that I wrote a review — I've never done that for anyone before.
A myth-check of the BOLT score: a genuinely useful personal signal of CO₂ tolerance — but not the validated performance predictor the "40-second ideal" makes it sound like.
Before you train, measure. A guided dry test — paced breathing, one relaxed max hold — and an honest reading of what your result means.
Pranayama’s retention and a freediver’s CO₂ table are the same mechanism in different vocabularies. What holds up under measurement — and what does not.
Download Apnea Trainer and start your first guided session today.
Download on the App StoreEverything you need to know before your first breath-hold session.
Apnea Trainer is a free download and lets you try guided breathing and short training sessions to get a feel for the app. Full, unlimited training — advanced plans, custom tables and detailed statistics — requires a subscription.
Yes. Every session runs entirely on your device, so you can train on a plane, in a basement or by the water without a connection. Nothing depends on the network — an internet connection is only needed to download the app and any updates.
Yes. The companion Apple Watch app lets you follow your tables right on your wrist, with haptic cues for every phase — so you can close your eyes and breathe without looking at a screen. Your sessions stay in sync with the iPhone app.
Dry breath-hold training on land is the safe way to build tolerance, and that is exactly what Apnea Trainer is built for. Never practise breath-holds in or under water alone. Always train with a qualified buddy in the water, stop the moment you feel unwell, and consult a doctor first if you have any heart, lung or blood-pressure condition.
They are the two classic freediving workouts. CO₂ tables keep the hold length steady while shrinking the rests, training your tolerance to the urge to breathe. O₂ tables keep the rests steady while stretching the holds, training your capacity. Apnea Trainer generates both from your personal best and adapts them as you improve.
Absolutely. Guided breathing walks you through every inhale, hold and exhale, and the starter tables begin gently and grow with you. Whether it is your first breath-hold or you are chasing a new personal best in freediving, the plans scale from complete beginner to advanced diver.
