# onsA440

> A basic tuning fork app activated by shake or tap. (iPhone/iPad app by Groov-in..)

- Source: https://appshunter.io/ios/app/onsa440/id356108470 (this page in markdown: same URL + `.md`)
- Developer: [Groov-in.](https://appshunter.io/developer/356108473)
- Category: Music, Entertainment
- Price: Free
- Rating: 2.30/5 from 3 App Store ratings · 45 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 5 MB
- Languages: American English
- Released: 2010-02-17
- Data updated: 2026-07-20
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/onsa440/id356108470/reviews.md

## What is onsA440?

This is a very simple tuning fork application. 

It begins to sound it in the shake gesture or the tap. 

And, the sound stops if the tap is done. 

For all musicians.

## Key features

- Shake gesture activation
- Tap gesture activation
- Simple sound generation
- For musicians

## Recent user reviews (10 of 45)

All indexed reviews: https://appshunter.io/ios/app/onsa440/id356108470/reviews.md

### 1/5 — 音が鳴らない

*2026-07-18, version 1.5.2*

みなさんどうされてます？

### 1/5 — ダメ

*2026-04-26, version 1.5.2*

ダウンロードしてすぐ使った時は音叉としてAの音が出るし便利！と思ったが、翌日からうんともすんとも言わなくなった。ただ画面下に広告が流れているだけ。再ダウンロードして森鴎外同じ。

### 5/5 — 最もシンプルで使いやすいアプリ

*2022-07-01, version 1.5.2*

ヴェイオリンを弾いています。これ以上シンプルで、使いやすいアプリはありません。ジャマにもなりません。ずっとサポートを続けて欲しいです。

### 5/5 — 教員です

*2021-11-04, version 1.5.2*

2台でやるとうなり起きます。ガチ教材です。

### 4/5 — こちらの音を測る機能は無いのでしょうか

*2020-11-24, version 1.5.2*

とても手軽に使えて便利です。ただ、こちらの音を拾って反応してくれる機能は無いのか、私が使いこなせていないのでしょうか。
正確な音を出してくれ、それに合わせて自分で音をチューニングしていくアプリ、として使っています。

### 5/5 — やりますねぇ

*2020-02-06, version 1.5.1*

24歳 学生ですが、1日ずっと楽しく使ってられました。 やりますねぇ！！

### 1/5 — No sound from speaker

*2019-11-15, version 1.5.1*

No sound at all from speaker on recent updates. You can hear the sound only through earphones. No use for tuning any instrument since your ears are already occupied with the earphones. Ridiculous design.

### 1/5 — 素晴らしい！

*2019-01-29, version 1.4.3*

こんなに使いやすい実験用のアプリは初めてです！本当にすごいと思います

### 5/5 — useful

*2017-11-26, version 1.4.3*

多くのチューニング用アプリがありますが、このアプリが一番便利で使いやすいと思います。

### 4/5 — 良いですね！

*2016-08-20, version 1.4.3*

良いと思います。
ただ、Hzを記憶できたら良いな！

## Frequently asked questions about onsA440

### How do I start the sound on onsA440?

You can start the sound on onsA440 by either shaking your device or tapping the screen. The app is designed for simple, gesture-based control.

### How do I stop the sound on onsA440?

To stop the sound on onsA440, simply tap the screen again. This provides a straightforward way to control the audio output.

### Is onsA440 suitable for all musicians?

Yes, the app is described as being for all musicians. Its simple functionality makes it a basic tool for generating a reference pitch.

### What devices does onsA440 support?

onsA440 supports iPhone and iPod devices. It is designed for use on Apple's mobile platforms.

### What is the age rating for onsA440?

The age rating for onsA440 is 4+. This indicates it is suitable for children and adults.

### When was onsA440 last updated?

onsA440 was last updated on September 18, 2020. The latest version is 1.5.2.

### Does onsA440 have ads?

No, onsA440 does not contain advertisements. The app is free and ad-free.

### What is the user rating for onsA440?

onsA440 has a user rating of 2.3 stars based on 3 ratings. This suggests a mixed reception from its current user base.

## Version history (last 5 releases)

### 1.5.2 — 2020-09-18

optimized for iOS 14.

### 1.5.1 — 2019-11-13

Optimized view and bug fixes.

### 1.4.7 — 2019-09-11

Bug fixes for displays less than 6.5 inches.

### 1.4.6 — 2019-09-09

Bug fixes and performance improvements.

### 1.4.3 — 2016-06-02

some minor changes.

## Apps similar to onsA440

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [PianoMeter – Piano Tuner](https://appshunter.io/ios/app/pianometer-piano-tuner/id1515529208) | 4.5 (38) | Free | Music |
| [The Tuning Fork lite](https://appshunter.io/ios/app/the-tuning-fork-lite/id465934066) | — | Free | Music |
| [A–440: Pro Tuner Tuning Fork](https://appshunter.io/ios/app/a440-pro-tuner-tuning-fork/id335593282) | 4.4 (184) | Free | Music |
| [A440 Tuner](https://appshunter.io/ios/app/a440-tuner/id304862860) | 2.9 (8) | Free | Music |
| [Tuning Fork Pro](https://appshunter.io/ios/app/tuning-fork-pro/id1390334198) | 4.3 (34) | $9.99 | Music |
| [Online Piano Atlas](https://appshunter.io/ios/app/online-piano-atlas/id732080356) | 2.3 (43) | Free | Music |

## Related topics

[a440](https://appshunter.io/ios/topics/a440)

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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 2026-07-20.*