# RespiRelax+ vs Billing Pro

The clearest difference is iOS requirement: Billing Pro at 9.0 against RespiRelax+'s 15.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

RespiRelax+ ships an update every 3 weeks, Billing Pro monthly. The most recent releases landed on September 25, 2026 and May 16, 2026 respectively.

## The numbers

| Metric | RespiRelax+ | Billing Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (16 ratings)](https://appshunter.io/ios/app/respirelax-plus/id515900420/reviews)** | — |
| Number of ratings | **16** | — |
| Positive reviews | 69.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | Free | — |
| Size | 84 MB | 64 MB |
| Requires iOS | 15.6 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Les Thermes d'Allevard](https://appshunter.io/developer/515900423) | [Robert Chen](https://appshunter.io/developer/1541052785) |

## What reviewers say

### RespiRelax+

[App page](https://appshunter.io/ios/app/respirelax-plus/id515900420)

Improve your breathing and manage stress with guided exercises. This app offers personalized programs and offline functionality for consistent practice, promoting well-being and cardiac coherence.

**Highlights:** Personalized breathing programs, Stress management exercises, Cardiac coherence training, Offline practice mode, Adjustable session duration, Soothing visual and sound environments

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

**In-app purchases:** none

**What reviewers like**

- ✨ Effective for anxiety management
- 🧘‍♀️ Calming and relaxing experience
- 👍 Simple and intuitive interface
- 🆓 Free to use
- 🔒 Respects data privacy

**What reviewers complain about**

- 🎶 Old music preferred by many
- 🔔 Aggressive end-of-session sound
- 🔊 Sound issues reported
- 📱 Lack of Apple Watch integration
- 🎨 New design less appealing to some

**Reported bugs**

- Custom session timing not constant
- Progressive sound option disappeared
- Sound settings not remembered
- Customization option not functional
- Cannot use with headphones

**Requested features**

- Apple Watch integration
- Customizable hold/apnea phases
- Ability to combine sessions
- Add duration of apnea for experts
- Calendar/progress tracking


### Billing Pro

[App page](https://appshunter.io/ios/app/billing-pro/id1541052783)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RespiRelax+ free?

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

### Is Billing Pro free?

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

### Do RespiRelax+ or Billing Pro have ads?

Neither RespiRelax+ nor Billing Pro shows ads.

### Which is updated more often, RespiRelax+ or Billing Pro?

RespiRelax+ ships an update every 3 weeks, and Billing Pro monthly. Most recently, RespiRelax+ was updated on September 25, 2026 and Billing Pro on May 16, 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.*