# StringVest vs Rithmatic

The clearest difference is price: Rithmatic at Free against StringVest's $0.99. Rithmatic also leads on update cadence (every 2 days vs every 2 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Rithmatic is free to download; StringVest costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

StringVest ships an update every 2 months, Rithmatic every 2 days. The most recent releases landed on October 15, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | StringVest | Rithmatic |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | — | **[4.0 (4 ratings)](https://appshunter.io/ios/app/rithmatic-fm-synth/id6794107110/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 days** |
| Monetization | — | Free |
| Size | 15 MB | 64 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Philip Vincent](https://appshunter.io/developer/1890469991) | [MADE WITH BEST PRACTICE LLC](https://appshunter.io/developer/6779338119) |

## What reviewers say

### StringVest

[App page](https://appshunter.io/ios/app/stringvest/id6761650269)

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

**In-app purchases:** none


### 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:** none


## Frequently asked questions

### Is StringVest free?

StringVest costs $0.99, with no in-app purchases.

### Is Rithmatic free?

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

### Do StringVest or Rithmatic have ads?

Neither StringVest nor Rithmatic shows ads.

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

StringVest ships an update every 2 months, and Rithmatic every 2 days. Most recently, StringVest was updated on October 15, 2026 and Rithmatic on October 13, 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.*