# Dark Ambient vs Rithmatic

The clearest difference is rating: Dark Ambient at 5.0 against Rithmatic's 4.6. Rithmatic's advantage is monetization model (free vs free with in-app purchases) and update cadence (every 2 days vs every 9 days). On price, ads and in-app purchases there is nothing between them.

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

Dark Ambient holds the better App Store score, 5.0 against 4.6. Both are backed by a comparable volume of ratings — 2 and 9 respectively.

Dark Ambient ships an update every 9 days, Rithmatic every 2 days. The most recent releases landed on October 25, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Dark Ambient | Rithmatic |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/dark-ambient/id6787626338/reviews)** | [4.6 (9 ratings)](https://appshunter.io/ios/app/rithmatic-fm-synth/id6794107110/reviews) |
| Number of ratings | 2 | **9** |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 2 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 2 MB | 61 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Lucas Langlois](https://appshunter.io/developer/6780890867) | [MADE WITH BEST PRACTICE LLC](https://appshunter.io/developer/6779338119) |

## What reviewers say

### Dark Ambient

[App page](https://appshunter.io/ios/app/dark-ambient/id6787626338)

Experience an evolving, non-repeating soundscape designed for sleep, focus, or quiet contemplation. This application operates entirely on-device, requiring no account, ads, or internet connection.

**Highlights:** Never-ending soundscapes, Slowly evolving audio, Designed for sleep, Aids concentration, No account required, Offline functionality

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Timer Unlock | $2.99 | one-time |


### 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, iPhone Duo 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 |


## Frequently asked questions

### Is Dark Ambient free?

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

### Is Rithmatic free?

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

### Which has better reviews, Dark Ambient or Rithmatic?

Dark Ambient is rated higher. Dark Ambient averages 5.0 out of 5 from 2 ratings, while Rithmatic averages 4.6 from 9 ratings.

### Do Dark Ambient or Rithmatic have ads?

Neither Dark Ambient nor Rithmatic shows ads.

### Which is updated more often, Dark Ambient or Rithmatic?

Dark Ambient ships an update every 9 days, and Rithmatic every 2 days. Most recently, Dark Ambient was updated on October 25, 2026 and Rithmatic on October 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.*