# Piano Prober

> Piano Prober (iPhone/iPad app by 绍军 初.)

- Source: https://appshunter.io/ios/app/piano-prober/id1209745376 (this page in markdown: same URL + `.md`)
- Developer: [绍军 初](https://appshunter.io/developer/1195414685)
- Category: Utilities, Music
- Price: Free
- Age rating: 4+
- Requires: iOS 12.0 · 10 MB
- Languages: English, Chinese
- Released: 2017-03-15
- Data updated: 2026-05-16
- User reviews in markdown: https://appshunter.io/ios/app/piano-prober/id1209745376/reviews.md

## What is Piano Prober?

Does your piano go out of tune? Is your piano tuned fine? The App can answer these questions for free.
Follow the on-screen prompts to strike several piano keys, you can obtain the piano's tuning curve as well as a chart of these keys' pitch deviations. By these results, you can evaluate how much your piano is out of tune.
This App based on our leading piano tuner technology. It provide very high detection accuracy and reliability.

Feature:
Automatically generating the tuning curve to adapt to the unique characteristics of each piano.
More than 0.1 cents accuracy of pitch measurement.
Probing with not muting unison strings makes it more simple and convenient. 

Note:
To achieve 0.1 cents measurement accuracy, you should mute unison strings well, and keep the environment quiet, no interference.
With not muting unison mode, the measurement accuracy is about 2 cents.


## Version history (last 5 releases)

### 1.75 — 2022-10-08

The old c code is abandoned, which improves the security of the app.

### 1.63 — 2020-11-03

The new IOS system is supported and the stability is improved.

### 1.62 — 2020-05-16

The font of prompt text on probe result page is increased, which is convenient for iPad users.

### 1.61 — 2020-05-14

Increased font size for better use by users.

### 1.60 — 2020-04-13

Improved page and application process.

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## More apps by 绍军 初

- [Piano Tuner(Pro Edition)](https://appshunter.io/ios/app/piano-tunerpro-edition/id1195414686)
- [Piano Tuner(Home Edition)](https://appshunter.io/ios/app/piano-tunerhome-edition/id1209825228)
- [Music Pitch Detector](https://appshunter.io/ios/app/music-pitch-detector/id1221790893)
- [Multi Tuner](https://appshunter.io/ios/app/multi-tuner/id1286543090)
- [Everyone Play](https://appshunter.io/ios/app/everyone-play/id6443967357)

All apps by 绍军 初: https://appshunter.io/developer/1195414685

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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 2026-05-16.*