# FairHammer

> FairHammer (iPhone/iPad app by Ruud van der Wel.)

- Source: https://appshunter.io/ios/app/fairhammer/id783673958 (this page in markdown: same URL + `.md`)
- Developer: [Ruud van der Wel](https://appshunter.io/developer/783666198)
- Category: Health & Fitness, Games
- Price: Free
- Age rating: 4+
- Requires: iOS 12.0 · 12 MB
- Languages: English
- Released: 2014-01-03
- Data updated: 2026-02-01
- User reviews in markdown: https://appshunter.io/ios/app/fairhammer/id783673958/reviews.md

## What is FairHammer?

The Fairhammer App is used in conjunction with GroovTube breathing exerciser hardware, as an aid to breathing exercises.

The GroovTube hardware unit is essentially a MIDI device which has been developed to output MIDI as a function of the User's breathing/airflow.  

The Fairhammer App detects breathing strength, speed and duration and uses these parameters to move "mercury" toward the top of a thermometer-style graphic.

Users may sign in and use the App regularly, and the App can be used to show all historical User/Session data, providing a useful tool for therapists to monitor progress.


## Version history (last 5 releases)

### 4.45 — 2025-09-16

Fixed size so the app is full screen.
Added version string to settings.

### 3 — 2022-02-22

Performance enhancements and bug fixes.

### 3.0 — 2018-09-21

Fixed bugs and performance enhancements.

### 2.9 — 2018-09-10

Fixed bugs and performance enhancements.

### 2.8 — 2017-05-26

* Tweaks to Difficulty Settings
* Bug Fixes & Improvements

## Apps similar to FairHammer

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Ergometer Space](https://appshunter.io/ios/app/ergometer-space/id1548193188) | — | Free | Health & Fitness |
| [Eforto](https://appshunter.io/ios/app/eforto/id6464038978) | — | Free | Health & Fitness |
| [Cue-app](https://appshunter.io/ios/app/cue/id6449977345) | — | Free | Health & Fitness |
| [FOIRing](https://appshunter.io/ios/app/foiring/id6738938445) | — | Free | Health & Fitness |
| [Aerox  WEPS04](https://appshunter.io/ios/app/aerox-weps04/id6498791942) | 5.0 (2) | Free | Health & Fitness |
| [CheckMySelf](https://appshunter.io/ios/app/checkmyself/id6446768461) | — | Free | Health & Fitness |

## More apps by Ruud van der Wel

- [GroovTube](https://appshunter.io/ios/app/groovtube/id783666195)
- [BilliardBreath](https://appshunter.io/ios/app/billiardbreath/id783674313)
- [Breath Music](https://appshunter.io/ios/app/breath-music/id929554168)
- [Breath Trainer](https://appshunter.io/ios/app/breath-trainer/id1055000183)
- [GroovyDragon](https://appshunter.io/ios/app/groovydragon/id1151064046)

All apps by Ruud van der Wel: https://appshunter.io/developer/783666198

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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 2026-02-01.*