Life & fun · alternatives · 2026
24 alternatives to O2 - Breath Hold Trainer
Train your breath holds with science-based apnea tables
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
- 1
Freediving breathing exercises and tables
2021 · apps.apple.com · its alternatives →
- 2
Improve breath-hold and lung capacity with CO2 & O2 tables.
2025 · apps.apple.com · its alternatives →
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Train smarter, hold longer.
May 2026 · breathholdcoach.istack.ro · its alternatives →
- 4
Turn your watch into a complete breath training system.
Jun 2026 · apps-developer.garmin.com · its alternatives →
- 5
Hey HN! Some more info: I’m an NHS doctor and the founder of Pi-A (https://www.pi-a.io) which developed Lungy (https://www.lungy.app). Lungy is an app (iOS only for now) that responds to breathing in real-time and was designed to make breathing exercises more engaging and beneficial to do. It hopefully has many aspects of interest to the HN community – real-time fluid, cloth and soft body sims running on the phone’s GPU. My background is as a junior surgical trainee and I started building Lungy in 2020 during the first COVID lockdown in London. During COVID, there were…
2023 · lungy.app · its alternatives →
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Endurance, Lung Health & Focus
2025 · apps.apple.com · its alternatives →
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Breathe Hold & Stamina Training. Get rid of Apnea!
2025 · play.google.com · its alternatives →
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Through controlled breathing it is possible to regulate your body's stress response. I've built an app to measure and train this effect with a Polar H10 Heart Rate monitor. With every breath you take, you can set the pace of your breathing rate, measure your breathing control with the chest accelerometer, and see how heart rate variability responds.
2023 · github.com · its alternatives →
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- 12
Learn to hold your breath for 1,2,3 or 4 plus minutes!
2024 · apps.apple.com · its alternatives →
- 13
Train any breathing exercise & posture with sensor feedback
2023 · prana.co · its alternatives →
- 14
Hey HN! I’m an NHS doctor and the founder of Pia (https://www.piahealth.co) which developed Lungy (https://www.lungy.app). Lungy is an iOS app that responds to breathing in real-time and was designed to make breathing exercises more engaging and beneficial to do. It’s been two years since Lungy launched (here’s the original ShowHN: https://news.ycombinator.com/item?id=34534615) and it's had a huge update and complete redesign. We rebuilt the whole app, and added a real-time 3D soft body solver which gives some really cool interactions like blobs /…
2025 · apps.apple.com · its alternatives →
- 15
Squair▲162I built Squair because my phone was giving me anxiety - and it was also the only thing in my pocket when anxiety hit. The problem: 4 cups of coffee just to focus. Then the anxiety kicks in. Chest tight. Racing thoughts. Scrolling reels to "calm down" made it worse. I Googled "anxiety relief" at 2am and found box breathing — same technique Navy SEALs use in combat. First time I tried it, I felt the difference within 2 minutes. No crash. No pills. Just breathing. So I built an app around it. 6 months. Solo dev with a full-time job. 112 builds. 2 App Store rejections. Finally live. What it…
Jan 2026 · squair.app · its alternatives →
- 16
Lungy▲92Next-gen breathing exercises that respond to every breath
2022 · lungy.app · its alternatives →
- 17
breathe is a (distraction-free) peripheral breath trainer, it helps you breathe correctly so you can stay calm and focus on what matters. - GitHub - tryhardfifi/breathe: breathe is a (distraction-free) peripheral breath trainer, it helps you breathe correctly so you can stay calm and focus on what m
2020 · github.com · its alternatives →
- 18
A new, more intuitive way to train the breath
2021 · infinitebreath.app · its alternatives →
- 19
Ai apnea training for freediving
2025 · freediving.web.app · its alternatives →
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Breathwrk▲100Learn and master breathwork with guided breathing exercises
2020 · breathwrk.com · its alternatives →
- 23
Apex Breath▲130Focused breath work to increase lung capacity + performance
2025 · apps.apple.com · its alternatives →
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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →