# Rithmatic vs CrispTone

The clearest difference is in-app purchases: CrispTone at none against Rithmatic's 4. Rithmatic's advantage is ads (none vs shown) and update cadence (every 2 days vs every 3 weeks). On price there is nothing between them.

Both are free to download. Rithmatic sells 4 one-off in-app purchases. CrispTone asks for nothing beyond the download.

Rithmatic ships an update every 2 days, CrispTone every 3 weeks. The most recent releases landed on October 24, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Rithmatic | CrispTone |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (9 ratings)](https://appshunter.io/ios/app/rithmatic-fm-synth/id6794107110/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 2 days** | Every 3 weeks |
| Monetization | Free | — |
| Size | 61 MB | 6 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [MADE WITH BEST PRACTICE LLC](https://appshunter.io/developer/6779338119) | [Bernd Weber](https://appshunter.io/developer/6797821169) |

## What reviewers say

### Rithmatic

[App page](https://appshunter.io/ios/app/rithmatic-fm-synth/id6794107110)

This app is an FM synthesizer featuring a vast library of classic voices. It allows users to explore, learn, build, and blend sounds using an intuitive interface and an AUv3 plugin for DAWs. It offers a comprehensive synthesis engine and various playback options.

**Highlights:** 36,118 classic DX7 voices included, AUv3 plugin for DAWs, Patch Builder to learn FM synthesis, Sound blending feature, On-screen and MIDI keyboard support, Arpeggiator and latch function, WAV export

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Comrade! | $4.99 | one-time |
| Major Supporter | $9.99 | one-time |
| Supporting Member | $19.99 | one-time |
| Underwriter | $49.99 | one-time |


### CrispTone

[App page](https://appshunter.io/ios/app/crisptone/id6797821167)

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

**In-app purchases:** none


## Frequently asked questions

### Is Rithmatic free?

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

### Is CrispTone free?

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

### Do Rithmatic or CrispTone have ads?

CrispTone shows ads; Rithmatic does not.

### Which is updated more often, Rithmatic or CrispTone?

Rithmatic ships an update every 2 days, and CrispTone every 3 weeks. Most recently, Rithmatic was updated on October 24, 2026 and CrispTone on October 10, 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.*