H2O Breath Hold Trainer

H2O Breath Hold Trainer

Increase lung capacity!

15 ratings
7 reviews
Free
In-App Purchases

Details

  • Released
  • Updated
  • May 1, 2024
  • July 18, 2026

Features

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H2O Breath Hold Trainer screenshot #10 for iPhone
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About

Enhance your breath control, lung capacity, and mental resilience. This app provides customizable training tables, performance tracking, and personalized assessments to help you improve your breath-holding abilities for freediving, athletics, or general well-being.

Customizable CO2 & O2 training tables
Performance tracking and insights
Dynamic training modes
Personalized breath-hold assessments
Intuitive user interface
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What's New in H2O Breath Hold Trainer

8.0.0

July 18, 2026

A complete visual refresh, plus a big batch of reliability fixes under the hood. Redesigned, top to bottom Every screen — warmups, training, assessments, progress charts, training log, settings, and the paywall — now uses a sleek, modern glass-card design with blurred underwater photography throughout. New: Cue Sounds setting Choose how the app talks to you during a session — Voice (spoken cues), Beeps (tone-only countdowns), or Off (silent) — from Settings, applied consistently across every timer in the app. Help & Info everywhere Every training screen now includes a quick "how-to" guide and a training info breakdown, so you always know what a workout involves before you start. Pool WOD Generator The workout style toggle is now labeled Flow / High HR for clarity on what each style actually does to your heart rate. Fixes & improvements • Fixed a bug where the Breath Hold Ladder could silently repeat the final round's hold and recovery twice • Fixed duplicate workout entries that could occur from quickly double-tapping Save • Fixed a crash that could occur when leaving Progress Charts while it was still loading • Fixed a Training Log issue where deleting one session right after another could delete it before you had a chance to undo • Improved reliability of purchase restoration and the premium unlock flow • Numerous smaller visual and stability improvements throughout

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In-App Purchases

$9.99

Premium Edition

Upgrade for all unlocked features!

User reviews

Already making impact

This app is great, the categories are very helpful and the game is great too.

Love the tool, bug still there

Using it for CO2 training. Finally worked out why my cardio is so “bad”. However the timer in the CO2 tables jumps from 2 minutes to 22 seconds and then keeps going down.

Best free app out there

Helped to increase my max breath hold and overall stress tolerance.

Great app!

Beyond the physical benefits, the app has been instrumental in focusing on controlled breathing and mindfulness exercise

Works Great!!!

Love this app, helped so much with my breath hold and overall fitness, can’t recommended enough!

FAQ

What is Breath Hold Trainer?

Breath Hold Trainer is a health and fitness application designed to help users increase their lung capacity and CO2 tolerance through structured breath-hold exercises. It offers customizable training tables and performance tracking.

Who is Breath Hold Trainer for?

This app is ideal for freedivers, athletes looking to enhance their performance, and anyone interested in improving their overall breath control and mental resilience. It caters to both beginners and experienced users.

Does Breath Hold Trainer have ads?

No, Breath Hold Trainer does not contain advertisements. The app is free to download and use, with optional in-app purchases available for enhanced features.

What kind of training does Breath Hold Trainer offer?

Breath Hold Trainer provides customizable CO2 and O2 training tables, dynamic training modes, and personalized assessments to help users improve their breath-hold capabilities. It aims to build CO2 tolerance and increase lung capacity.

Can I track my progress with Breath Hold Trainer?

Yes, the app features performance tracking and insights, allowing users to visualize their progress over time with detailed charts and analytics. This helps in understanding and guiding their training journey.

What devices is Breath Hold Trainer available on?

Breath Hold Trainer is compatible with iPhone, iPad, and iPod devices. It is designed to offer a seamless user experience across these Apple platforms.

How often is Breath Hold Trainer updated?

The latest version of Breath Hold Trainer is 6.5.0, last updated on March 30, 2026. This indicates a recent update, suggesting the app is actively maintained.

What is the age rating for Breath Hold Trainer?

Breath Hold Trainer has an age rating of 4+, making it suitable for a wide range of users. This rating suggests no mature content is present in the application.