# Diapason Audio Generator vs Morse Code Master

The clearest difference is review sentiment: Morse Code Master at 100% against Diapason Audio Generator's 56%. Morse Code Master also leads on price ($0.99 vs $1.99). Diapason Audio Generator's advantage is iOS requirement (12.2 vs 17.0). On update cadence, ads, in-app purchases and monetization model there is nothing between them.

Diapason Audio Generator costs $1.99 and Morse Code Master $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Diapason Audio Generator ships an update every 5 months, Morse Code Master every 6 months. The most recent releases landed on September 28, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Diapason Audio Generator | Morse Code Master |
| --- | --- | --- |
| Price | $1.99 | **$0.99** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/diapason-audio-generator/id352091730/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 55.6% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 6 months |
| Monetization | Paid | Paid |
| Size | 2 MB | 1 MB |
| Requires iOS | **12.2** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Fabien Lefebvre](https://appshunter.io/developer/338004167) | [博 彭](https://appshunter.io/developer/1293268076) |

## What reviewers say

### Diapason Audio Generator

[App page](https://appshunter.io/ios/app/diapason-audio-generator/id352091730)

Generate various audio test tones, including sine waves, noise, and more. Combine up to four independent sources with phase control for each speaker. Monitor waveforms and output power with clipping indication.

**Highlights:** Multiple test tone types (sine, square, triangle, sawtooth, noise), Combine up to 4 independent audio sources, Phase switch for each speaker channel, Frequency sweeping and musical scale alignment, Narrow band noise generation, Waveform viewer, RMS power and clipping indication

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

**In-app purchases:** none


### Morse Code Master

[App page](https://appshunter.io/ios/app/morse-code-master/id1663425426)

Easily encode and decode Morse code with support for International and English variations. Features automatic playback, an alphabet reference, common phrases, and text-to-speech conversion for enhanced understanding.

**Highlights:** Morse code encoding and decoding, International and English Morse code support, Automatic playback function, Morse code alphabet reference, Common phrase list, Text to speech conversion

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Diapason Audio Generator free?

Diapason Audio Generator costs $1.99, with no in-app purchases.

### Is Morse Code Master free?

Morse Code Master costs $0.99, with no in-app purchases.

### Do Diapason Audio Generator or Morse Code Master have ads?

Neither Diapason Audio Generator nor Morse Code Master shows ads.

### Which is updated more often, Diapason Audio Generator or Morse Code Master?

Diapason Audio Generator ships an update every 5 months, and Morse Code Master every 6 months. Most recently, Diapason Audio Generator was updated on September 28, 2026 and Morse Code Master on September 29, 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.*