# iDiapason — Pro Tuning - Choir & Musicians

> Digital tuning fork for musicians with shake-to-play functionality. (iPhone/iPad app by Punctus Multimedia.)

- Source: https://appshunter.io/ios/app/idiapason/id325550985 (this page in markdown: same URL + `.md`)
- Developer: [Punctus Multimedia](https://appshunter.io/developer/325550989)
- Category: Music, Utilities
- Price: Free (on sale, was $2.99)
- Rating: 1.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 17+
- Requires: iOS 16.6 · 3 MB
- Languages: American English
- Released: 2009-08-13
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/idiapason/id325550985/reviews.md

## What is iDiapason?

iDiapason is a refined digital tuning fork designed for choir directors, singers and musicians who require precision and simplicity.
With a clean and distraction-free interface, the app provides an immediate reference pitch activated by a natural shake gesture — just like striking a real tuning fork.
Features:
• Reference pitches: 440 Hz, 441 Hz, 442 Hz, 444 Hz. 435 Hz and 432 Hz
• Real recorded tuning fork sound
• Shake-to-play interaction
• Smooth audio fade-out
• Visual feedback animation
• Optimized for modern iPhone devices
iDiapason is ideal for:
• Choir rehearsals
• Vocal warm-ups
• A cappella groups
• Music lessons
• Instrument tuning reference
Built for reliability and clarity, iDiapason delivers an authentic tuning experience in a minimal and elegant design.
No ads. No distractions. Just pitch.

## Key features

- Reference pitches (435-444 Hz)
- Real recorded tuning fork sound
- Shake-to-play interaction
- Smooth audio fade-out
- Visual feedback animation
- Minimalist design

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/idiapason/id325550985/reviews.md

### 1/5 — nogoodapp

*2009-09-07*

they say studio quality sound system ; but, I hear NOTHIONG when I want to losten to that frequency. What a waste of my dollar; I DO NOT RECOMMEND THIS APP; it's another nogoodapp;

## Frequently asked questions about iDiapason

### What reference pitches does iDiapason offer?

iDiapason provides several reference pitches including 435 Hz, 432 Hz, 440 Hz, 441 Hz, 442 Hz, and 444 Hz. This range caters to various musical needs and preferences.

### How do I activate the tuning fork sound in iDiapason?

The tuning fork sound is activated by a natural shake gesture, similar to striking a physical tuning fork. This shake-to-play interaction is a core feature for quick access to pitch.

### Does iDiapason have ads?

No, iDiapason is ad-free. The app is designed with no ads and no distractions, focusing solely on providing a clear pitch reference.

### What devices is iDiapason optimized for?

iDiapason is optimized for modern iPhone devices and is also supported on iPad. It aims to deliver a reliable and clear tuning experience across these platforms.

### What is the age rating for iDiapason?

The age rating for iDiapason is 17+. This rating is determined by app store guidelines and may reflect content or features deemed suitable for mature users.

### How often is iDiapason updated?

The latest version of iDiapason is 2.0, last updated on March 4, 2026. While this indicates a recent update, the frequency of future updates is not specified.

### What is the user sentiment for iDiapason?

Based on the provided data, iDiapason has a rating of 1.0 stars from 1 rating. This single rating suggests a potentially negative user experience, though more data is needed for a comprehensive understanding.

### Is iDiapason suitable for beginners?

Yes, iDiapason is ideal for beginners and professionals alike due to its simple, distraction-free interface and intuitive shake-to-play feature. It's useful for vocal warm-ups, music lessons, and instrument tuning reference.

## Version history (last 2 releases)

### 2.0 — 2026-03-04

New Reference pitches:
- 440 Hz - Standard
- 441 Hz - Professional 1
- 442 Hz - Professional 2
- 444 Hz - Bright Choral
- 432 Hz - Natural
- 435 Hz - Historical French.

### 1.0 — 2009-08-13

No release notes.

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## More apps by Punctus Multimedia

- [Car Cost](https://appshunter.io/ios/app/car-cost/id1236902497)

All apps by Punctus Multimedia: https://appshunter.io/developer/325550989

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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 2026-06-10.*