# PrO2+

> Companion app for respiratory muscle trainers to assess and improve breathing. (iPhone/iPad app by PrO2HEALTH, INC..)

- Source: https://appshunter.io/ios/app/pro2-plus/id6757462419 (this page in markdown: same URL + `.md`)
- Developer: [PrO2HEALTH, INC.](https://appshunter.io/developer/909203686)
- Category: Health & Fitness, Sports
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 17.0 · 6 MB
- Languages: English
- Released: 2026-04-22
- Data updated: 2026-06-29
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/pro2-plus/id6757462419/reviews.md

## What is PrO2+?

This is the companion app for the PrO2 Respiratory Muscle Trainer products. 

The PrO2 devices are used to assess and improve respiratory strength and performance
through resisted breathing measurements and training.

Individuals who are not in good health or have any respiratory related medical condition should
consult their physician before using PrO2.

This PrO2 device and apps are classified as Class II medical devices that are exempt from premarket notification requirements under regulations of the U.S. Food and Drug Administration (FDA). The manufacturer is registered with the FDA and the device is listed in accordance with applicable U.S. regulatory requirements. For regions outside the US, refer to local guidance for the use of the PrO2 device for medical purposes.

The PrO2 devices are FCC approved (2AX05-PRO2FIT) and CE registered.

## Key features

- Respiratory muscle training
- Breathing strength assessment
- Resisted breathing measurements
- Performance improvement tracking
- Device connectivity


## Frequently asked questions about PrO2+

### What is PrO2+ used for?

PrO2+ is a companion app for PrO2 Respiratory Muscle Trainer products. It helps users assess and improve their respiratory strength and performance through resisted breathing measurements and training sessions.

### Is PrO2+ suitable for everyone?

Individuals who are not in good health or have any respiratory-related medical conditions should consult their physician before using PrO2+. The app is classified as a Class II medical device.

### What is the rating of PrO2+?

PrO2+ has a rating of 5.0 stars based on 1 rating.

### What devices is PrO2+ available on?

PrO2+ is available for iPhone and iPad.

### When was PrO2+ last updated?

The latest version of PrO2+ was last updated on June 8, 2026.

### Does PrO2+ have ads?

No, PrO2+ does not contain advertisements.

### What is the age rating for PrO2+?

PrO2+ has an age rating of 4+.

### Is PrO2+ a medical device?

Yes, the PrO2 device and its companion app are classified as Class II medical devices by the U.S. FDA.

## Version history (last 4 releases)

### 4.41 — 2026-06-08

Bug fixes for user login

### 4.32 — 2026-05-20

- Show baseline target breath curve after accepting during training
- Bug fixes for showing total SMIP/SMEP when transitioning from assessment
- Retry breath uploads on failure

### 4.28 — 2026-04-22

- Set/rep bug fixes for training
- Bug fixes around protocol adustments

### 4.25 — 2026-04-22

No release notes.

## More apps by PrO2HEALTH, INC.

- [PrO2 Fit](https://appshunter.io/ios/app/pro2-fit/id1321623265)

All apps by PrO2HEALTH, INC.: https://appshunter.io/developer/909203686

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-29.*