# Rithmatic vs Nimbus Synth

The clearest difference is update cadence: Rithmatic at every 2 days against Nimbus Synth's weekly. Rithmatic also leads on device support (4 vs 2). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Rithmatic sells 4 one-off in-app purchases and Nimbus Synth sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Rithmatic ships an update every 2 days, Nimbus Synth weekly. The most recent releases landed on October 24, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Rithmatic | Nimbus Synth |
| --- | --- | --- |
| 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 | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Weekly |
| Monetization | Free | — |
| Size | 61 MB | 38 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [MADE WITH BEST PRACTICE LLC](https://appshunter.io/developer/6779338119) | [Ondre Studios, LDA](https://appshunter.io/developer/6794400633) |

## 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 |


### Nimbus Synth

[App page](https://appshunter.io/ios/app/nimbus-synth/id6794400631)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Nimbus Synth Pro | $6.99 | one-time |


## Frequently asked questions

### Is Rithmatic free?

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

### Is Nimbus Synth free?

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

### Do Rithmatic or Nimbus Synth have ads?

Neither Rithmatic nor Nimbus Synth shows ads.

### Which is updated more often, Rithmatic or Nimbus Synth?

Rithmatic ships an update every 2 days, and Nimbus Synth weekly. Most recently, Rithmatic was updated on October 24, 2026 and Nimbus Synth on October 14, 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.*