# EyeTest40cm vs RespiRelax+

The clearest difference is price: RespiRelax+ at Free against EyeTest40cm's $3.99. RespiRelax+ also leads on update cadence (every 3 weeks vs every 41 months) and device support (3 vs 1). EyeTest40cm's advantage is iOS requirement (8.0 vs 15.6). On ads and in-app purchases there is nothing between them.

RespiRelax+ is free to download; EyeTest40cm costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

EyeTest40cm ships an update every 41 months, RespiRelax+ every 3 weeks. The most recent releases landed on May 16, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | EyeTest40cm | RespiRelax+ |
| --- | --- | --- |
| Price | $3.99 | **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 41 months | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 13 MB | 84 MB |
| Requires iOS | **8.0** | 15.6 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [FUSO PRECISION Co., Ltd.](https://appshunter.io/developer/382022791) | [Les Thermes d'Allevard](https://appshunter.io/developer/515900423) |

## What reviewers say

### EyeTest40cm

[App page](https://appshunter.io/ios/app/eyetest40cm/id394110886)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is EyeTest40cm free?

EyeTest40cm costs $3.99, with no in-app purchases.

### Is RespiRelax+ free?

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

### Do EyeTest40cm or RespiRelax+ have ads?

Neither EyeTest40cm nor RespiRelax+ shows ads.

### Which is updated more often, EyeTest40cm or RespiRelax+?

EyeTest40cm ships an update every 41 months, and RespiRelax+ every 3 weeks. Most recently, EyeTest40cm was updated on May 16, 2026 and RespiRelax+ on October 29, 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.*