# Thesys vs Stravinski

The clearest difference is rating: Thesys at 4.7 against Stravinski's 4.0. Thesys also leads on ratings volume (85 vs 21). Stravinski's advantage is in-app purchases (none vs 1) and update cadence (every 5 days vs every 3 months). On price and ads there is nothing between them.

Both are free to download. Thesys sells 1 one-off in-app purchase. Stravinski asks for nothing beyond the download.

Thesys holds the better App Store score, 4.7 against 4.0. Both are backed by a comparable volume of ratings — 85 and 21 respectively. Written reviews complicate that: 59% of Thesys's written reviews are positive against 86% of Stravinski's, so the app with the better star average is not the one people write more warmly about.

Thesys ships an update every 3 months, Stravinski every 5 days. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Thesys | Stravinski |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (85 ratings)](https://appshunter.io/ios/app/thesys/id655513441/reviews)** | [4.0 (21 ratings)](https://appshunter.io/ios/app/stravinski/id1229475383/reviews) |
| Number of ratings | **85** | 21 |
| Positive reviews | 59.3% of reviews | **85.7% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 29 MB | 136 MB |
| Requires iOS | 17.6 | **10.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Sugar Bytes GmbH](https://appshunter.io/developer/614418826) | [Per Loenicker](https://appshunter.io/developer/1071145777) |

## What reviewers say

### Thesys

[App page](https://appshunter.io/ios/app/thesys/id655513441)

This app is a powerful and intuitive MIDI step sequencer for creating complex musical patterns. It offers extensive control over MIDI devices, enabling organic bass lines, leads, and pads for studio or live performance. Advanced features allow for real-time pattern manipulation directly from a MIDI keyboard.

**Highlights:** MIDI Step Sequencer, Pattern Creation, Live Performance Options, Real-time Pattern Manipulation, Integrated Synth, Action Section (Gatetime, Looper, Slowdown), Ableton Link Support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Thesys Full Version | $19.99 | one-time |


### Stravinski

[App page](https://appshunter.io/ios/app/stravinski/id1229475383)

This app generates eight-bar piano melodies based on music psychology research. Users can adjust complexity, tempo, and key, and toggle drum tracks. It supports Audiobus, Inter-App Audio, and MIDI out.

**Highlights:** Melody generation, Adjustable complexity, Tempo and key settings, Drum track toggle, Audiobus support, Inter-App Audio support, MIDI out support

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Thesys free?

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

### Is Stravinski free?

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

### Which has better reviews, Thesys or Stravinski?

Thesys is rated higher. Thesys averages 4.7 out of 5 from 85 ratings, while Stravinski averages 4.0 from 21 ratings.

### Do Thesys or Stravinski have ads?

Neither Thesys nor Stravinski shows ads.

### Which is updated more often, Thesys or Stravinski?

Thesys ships an update every 3 months, and Stravinski every 5 days. Most recently, Thesys was updated on October 23, 2026 and Stravinski on October 24, 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.*