# iDiapason vs Tone Generator

The clearest difference is in-app purchases: iDiapason at none against Tone Generator's 2. iDiapason also leads on iOS requirement (16.6 vs 18.0). Tone Generator's advantage is update cadence (every 6 weeks vs every 202 months). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. Tone Generator sells 2 in-app purchases, starting at $2.99 per 7 days. iDiapason asks for nothing beyond the download.

iDiapason ships an update every 202 months, Tone Generator every 6 weeks. The most recent releases landed on October 7, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | iDiapason | Tone Generator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/idiapason/id325550985/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 202 months | **Every 6 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 3 MB | 5 MB |
| Requires iOS | **16.6** | 18.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 17+ | 4+ |
| Developer | [Punctus Multimedia](https://appshunter.io/developer/325550989) | [extensions.ee](https://appshunter.io/developer/1832739413) |

## What reviewers say

### iDiapason

[App page](https://appshunter.io/ios/app/idiapason/id325550985)

This app provides a precise digital tuning fork for musicians and choir directors. It offers a clean interface with reference pitches and a unique shake-to-play gesture, delivering an authentic and distraction-free tuning experience.

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Tone Generator

[App page](https://appshunter.io/ios/app/tone-generator-frequency-hz/id6758712649)

Generate precise audio tones for tuning instruments, testing sound equipment, or practicing ear training. This app offers a clean, focused experience with no ads or accounts, working offline for instant reference.

**Highlights:** Reference tone generation, Note or Hz input, Offline functionality, Instrument tuning, Sound equipment testing, Ear training, Save favorite tones

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly subscription | $2.99 | per 7 days |
| Yearly subscription | $29.99 | per year |


## Frequently asked questions

### Is iDiapason free?

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

### Is Tone Generator free?

Tone Generator is free to download, with in-app purchases available.

### Do iDiapason or Tone Generator have ads?

Neither iDiapason nor Tone Generator shows ads.

### Which is updated more often, iDiapason or Tone Generator?

iDiapason ships an update every 202 months, and Tone Generator every 6 weeks. Most recently, iDiapason was updated on October 7, 2026 and Tone Generator on October 18, 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.*