Life & fun · alternatives · 2026
24 alternatives to Breath Training System PRO - CO2, O2
Turn your watch into a complete breath training system.
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
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 →
- 3
Train your breath holds with science-based apnea tables
Feb 2026 · apps.apple.com · its alternatives →
- 4
Breathe Hold & Stamina Training. Get rid of Apnea!
2025 · play.google.com · its alternatives →
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Apex Breath▲130Focused breath work to increase lung capacity + performance
2025 · apps.apple.com · its alternatives →
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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 →
- 9
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 →
- 10
A new, more intuitive way to train the breath
2021 · infinitebreath.app · its alternatives →
- 11
Train any breathing exercise & posture with sensor feedback
2023 · prana.co · its alternatives →
- 12
Resonance▲106Monitor and improve your stress resilience with HRV & Breath
2023 · resonance.so · its alternatives →
- 13
Improve breath-hold and lung capacity with CO2 & O2 tables.
2025 · apps.apple.com · its alternatives →
- 14
Train smarter, hold longer.
May 2026 · breathholdcoach.istack.ro · its alternatives →
- 15
Breathwrk▲100Learn and master breathwork with guided breathing exercises
2020 · breathwrk.com · its alternatives →
- 16
Endurance, Lung Health & Focus
2025 · apps.apple.com · its alternatives →
- 17
Breathhh▲204Personal mental shield against stress and anxiety
2022 · breathhh.app · its alternatives →
- 18
A person's heart rate fluctuates based on factors such as activity, environment, and mental state. Additionally, heart rate variations occur on a much shorter timescale, with changes happening every few seconds. During inhalation, heart rate slightly increases, and it decreases again during exhalation, a phenomenon known as respiratory sinus arrhythmia. There are several reasons for this. Firstly, an increase in volume within the thoracic cavity (the space between the ribs) leads to a corresponding drop in pressure, which is counteracted by a rise in heart rate to regulate blood pressure.…
2023 · github.com · its alternatives →
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Not AI-powered. Built for my wife. Simple & Science-backed.
2025 · apps.apple.com · its alternatives →
- 21
I built a terminal app that paces slow breathing at 6 breaths per minute for vagal tone training. It's a single Python file, stdlib only, no dependencies — just run breathe and follow the bar. I'm a cardiology patient (HFrEF). Slow breathing at resonance frequency is one of the few non-pharmacological interventions shown to improve cardiac vagal tone and baroreflex sensitivity (Bernardi et al., Circulation 2002; Lancet 1998). I wanted a frictionless daily habit tool — no app store, no account, no subscription, just open terminal and go. Design constraints, all grounded in the clinical…
May 2026 · github.com · its alternatives →
- 22
Yoga breathing exercises, pranayamas
2023 · universalbreath.app · its alternatives →
- 23
Swimio▲116AI swim coach with Apple Watch tracking & smart workouts
Jun 2026 · swimio.app · its alternatives →
- 24
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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 →