# Universal Breathing vs TrainOS

The clearest difference is rating: TrainOS at 5.0 against Universal Breathing's 3.6. TrainOS also leads on review sentiment (100% vs 60%) and in-app purchases (none vs 2). Universal Breathing's advantage is ratings volume (41 vs 1). On price, update cadence, monetization model and device support there is nothing between them.

Both are free to download. Universal Breathing sells 2 in-app purchases, starting at $1.99 per month. TrainOS asks for nothing beyond the download.

TrainOS holds the better App Store score, 5.0 against 3.6. That said, the two scores are not equally well evidenced: Universal Breathing has 41 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 60% of Universal Breathing's written reviews are positive against 100% of TrainOS's.

Universal Breathing ships an update every 6 weeks, TrainOS every 3 weeks. The most recent releases landed on October 22, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Universal Breathing | TrainOS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.6 (41 ratings)](https://appshunter.io/ios/app/universal-breathing-pranayama/id435871685/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/trainos/id6759579581/reviews)** |
| Number of ratings | **41** | 1 |
| Positive reviews | 60.4% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 131 MB | 90 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Saagara](https://appshunter.io/developer/341935133) | [Sourish Agarwal](https://appshunter.io/developer/1582144014) |

## What reviewers say

### Universal Breathing

[App page](https://appshunter.io/ios/app/universal-breathing-pranayama/id435871685)

This app guides you through proper breathing techniques to improve your health and well-being. Learn to breathe diaphragmatically for 15 minutes daily to reduce stress, improve sleep, and enhance athletic performance.

**Highlights:** Diaphragmatic breathing training, Guided breathing courses, Customizable breathing ratios, Body and dial animations, Multiple sound settings, Beginner to advanced levels

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Universal Breathing Monthly | $1.99 | per month |
| Universal Breathing Annual | $14.99 | per year |

**What reviewers like**

- 👍 Simple and effective
- 👍 Great for beginners
- 👍 Helps with anxiety/stress
- 👍 Improves breathing capacity
- 👍 Useful for meditation

**What reviewers complain about**

- 🐛 Sound not working
- 🐛 App is outdated
- 🐛 Difficult to exit app
- 🐛 Unintuitive user interface
- 🐛 Limited free features

**Reported bugs**

- Sound stopped working
- No sound on iPhone
- Audio bug requires phone restart
- Customization button not working
- Paid version only works for beginner level

**Requested features**

- More free options
- Update the app
- Improve user-friendliness
- Clarify calendar/timetable numbers
- More customization for retention/exhale


### TrainOS

[App page](https://appshunter.io/ios/app/trainos/id6759579581)

This platform connects Brazilian Jiu-Jitsu academies with their students. It offers class booking, attendance tracking, progress monitoring, and community features for members, alongside powerful tools for instructors and owners to manage curriculum, promotions, and analytics.

**Highlights:** Instant class booking and availability, Personalized check-in options, Training progress tracking with heatmaps, Belt promotion journey visualization, Community feed for members, AI assistant for academy owners, Real-time class roster management

**Features:** macOS Compatibility, Apple Wallet, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Universal Breathing free?

Universal Breathing is free to download, with in-app purchases available.

### Is TrainOS free?

TrainOS is free to download, with no in-app purchases.

### Which has better reviews, Universal Breathing or TrainOS?

TrainOS is rated higher. Universal Breathing averages 3.6 out of 5 from 41 ratings, while TrainOS averages 5.0 from 1 ratings.

### Do Universal Breathing or TrainOS have ads?

Universal Breathing shows ads; TrainOS does not.

### Which is updated more often, Universal Breathing or TrainOS?

Universal Breathing ships an update every 6 weeks, and TrainOS every 3 weeks. Most recently, Universal Breathing was updated on October 22, 2026 and TrainOS on October 6, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*