# Rithmatic vs Aureline

The clearest difference is in-app purchases: Aureline at none against Rithmatic's 4. Rithmatic's advantage is device support (4 vs 1). On price, rating, ratings volume and update cadence there is nothing between them.

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

Aureline holds the better App Store score, 4.7 against 4.6. Both are backed by a comparable volume of ratings — 9 and 7 respectively.

Rithmatic ships an update every 2 days, Aureline daily. The most recent releases landed on October 24, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | Rithmatic | Aureline |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (9 ratings)](https://appshunter.io/ios/app/rithmatic-fm-synth/id6794107110/reviews) | **[4.7 (7 ratings)](https://appshunter.io/ios/app/aureline/id6794556772/reviews)** |
| Number of ratings | **9** | 7 |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 days | **Daily** |
| Monetization | Free | Free |
| Size | 61 MB | 4 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [MADE WITH BEST PRACTICE LLC](https://appshunter.io/developer/6779338119) | [Hideki Konishi](https://appshunter.io/developer/6790603370) |

## 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 |


### Aureline

[App page](https://appshunter.io/ios/app/aureline/id6794556772)

This app is an 8-voice polyphonic synthesizer that combines the feel of classic analog synths with the unique character of waveform memory sound sources. It offers a wide range of sound creation capabilities, from warm pads and powerful basses to digital game sounds and sound effects.

**Highlights:** 8-voice polyphony, Dual oscillator configuration, Analog modeling and waveform memory, WAVE EDIT for drawing waveforms, POLY MOD, Filter/Amp Envelope, LFO, Arpeggiator, Chord, Hold

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Rithmatic free?

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

### Is Aureline free?

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

### Which has better reviews, Rithmatic or Aureline?

Aureline is rated higher. Rithmatic averages 4.6 out of 5 from 9 ratings, while Aureline averages 4.7 from 7 ratings.

### Do Rithmatic or Aureline have ads?

Neither Rithmatic nor Aureline shows ads.

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

Rithmatic ships an update every 2 days, and Aureline daily. Most recently, Rithmatic was updated on October 24, 2026 and Aureline on October 23, 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.*