# iDiapason vs Pentatonics

The clearest difference is review sentiment: Pentatonics at 100% against iDiapason's 0%. Pentatonics also leads on update cadence (every 9 days vs every 202 months). iDiapason's advantage is price (Free vs $0.99). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

iDiapason is free to download; Pentatonics costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

iDiapason ships an update every 202 months, Pentatonics every 9 days. The most recent releases landed on October 31, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | iDiapason | Pentatonics |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/idiapason/id325550985/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 202 months | **Every 9 days** |
| Monetization | **Free** | Paid |
| Size | 3 MB | 1 MB |
| Requires iOS | **16.6** | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Punctus Multimedia](https://appshunter.io/developer/325550989) | [Oliver Richard Erich Naumann](https://appshunter.io/developer/1790724923) |

## 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


### Pentatonics

[App page](https://appshunter.io/ios/app/pentatonics-take-five/id6746047183)

This app visualizes five-note scales and their connection to chords, offering a unique way to explore musical expression. It helps musicians improvise, compose, and understand harmony with clear visual aids and smart filtering options.

**Highlights:** Pentagon scale-chord visualizer, Six curated pentatonic scales, Smart chord filtering, Two-way transposition, Layered interval insight, Highlight chord tones, Save favorite combinations

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is iDiapason free?

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

### Is Pentatonics free?

Pentatonics costs $0.99, with no in-app purchases.

### Do iDiapason or Pentatonics have ads?

Neither iDiapason nor Pentatonics shows ads.

### Which is updated more often, iDiapason or Pentatonics?

iDiapason ships an update every 202 months, and Pentatonics every 9 days. Most recently, iDiapason was updated on October 31, 2026 and Pentatonics on October 30, 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.*