# Thesys vs Relic Flow

The clearest difference is price: Thesys at Free against Relic Flow's $1.99. Thesys also leads on update cadence (every 3 months vs every 17 months) and ratings volume (85 vs 26). Relic Flow's advantage is in-app purchases (none vs 1) and review sentiment (93% vs 59%). On rating and ads there is nothing between them.

Thesys is free to download; Relic Flow costs $1.99 up front. Thesys sells 1 one-off in-app purchase. Relic Flow asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.7 for Thesys against 4.8 for Relic Flow. Both are backed by a comparable volume of ratings — 85 and 26 respectively. Written reviews are what separate them: 59% of Thesys's written reviews are positive against 93% of Relic Flow's.

Thesys ships an update every 3 months, Relic Flow every 17 months. The most recent releases landed on August 9, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Thesys | Relic Flow |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | [4.7 (85 ratings)](https://appshunter.io/ios/app/thesys/id655513441/reviews) | **[4.8 (26 ratings)](https://appshunter.io/ios/app/relic-flow/id6499490810/reviews)** |
| Number of ratings | **85** | 26 |
| Positive reviews | 59.3% of reviews | **93.3% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 17 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 28 MB | 6 MB |
| Requires iOS | 17.6 | **12.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Sugar Bytes GmbH](https://appshunter.io/developer/614418826) | [Alexander Zolotov](https://appshunter.io/developer/324462547) |

## 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 |


### Relic Flow

[App page](https://appshunter.io/ios/app/relic-flow/id6499490810)

Generate unique Lo-Fi rhythms, noise patterns, and drum loops using advanced synthesis algorithms. Explore billions of sound samples with intuitive controls and real-time audio recording. Perfect for musicians and sound designers seeking endless creative possibilities.

**Highlights:** Lo-Fi rhythm and drum loop generation, Billions of unique sound samples, Real-time audio recording to WAV, Multiple input methods (on-screen, PC keyboard, MIDI), Export to WAV, SunVox, and text clipboard, iOS Audio Unit Extension (AUv3) 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 Relic Flow free?

Relic Flow costs $1.99, with no in-app purchases.

### Which has better reviews, Thesys or Relic Flow?

Relic Flow is rated higher. Thesys averages 4.7 out of 5 from 85 ratings, while Relic Flow averages 4.8 from 26 ratings.

### Do Thesys or Relic Flow have ads?

Neither Thesys nor Relic Flow shows ads.

### Which is updated more often, Thesys or Relic Flow?

Thesys ships an update every 3 months, and Relic Flow every 17 months. Most recently, Thesys was updated on August 9, 2026 and Relic Flow on September 17, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*