# Refraktions vs Soi

The clearest difference is review sentiment: Refraktions at 90% against Soi's 0%. Refraktions also leads on rating (4.5 vs 4.0) and ratings volume (28 vs 2). Soi's advantage is price (Free vs $5.99) and iOS requirement (10.3 vs 14.3). On update cadence, ads, in-app purchases and device support there is nothing between them.

Soi is free to download; Refraktions costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Refraktions holds the better App Store score, 4.5 against 4.0. That said, the two scores are not equally well evidenced: Refraktions has 28 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 90% of Refraktions's written reviews are positive against 0% of Soi's.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 10, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Refraktions | Soi |
| --- | --- | --- |
| Price | $5.99 | **Free** |
| Rating | **[4.5 (28 ratings)](https://appshunter.io/ios/app/refraktions/id866134037/reviews)** | [4.0 (2 ratings)](https://appshunter.io/ios/app/soi/id986051970/reviews) |
| Number of ratings | **28** | 2 |
| Positive reviews | **90.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Paid | **Free** |
| Size | 26 MB | 28 MB |
| Requires iOS | 14.3 | **10.3** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jason Snell](https://appshunter.io/developer/866134040) | [Aero Deko](https://appshunter.io/developer/507882387) |

## What reviewers say

### Refraktions

[App page](https://appshunter.io/ios/app/refraktions/id866134037)

This app is an 8-track generative MIDI sequencer that uses AI to create personalized loops based on user input over time. It offers a unique approach to music creation, adapting to individual preferences.

**Highlights:** 8-track generative MIDI sequencing, Artificial intelligence processing, Time-based input adaptation, Personalized loop creation, User-tailored output

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

**In-app purchases:** none


### Soi

[App page](https://appshunter.io/ios/app/soi/id986051970)

Create and improvise music with others in real-time. This expressive instrument allows groups of any size to perform together, automatically harmonizing and synchronizing participants for an engaging experience where there are no wrong notes.

**Highlights:** Real-time music creation, Group improvisation, Automatic harmonization, Participant synchronization, Ensemble performance

**In-app purchases:** none


## Frequently asked questions

### Is Refraktions free?

Refraktions costs $5.99, with no in-app purchases.

### Is Soi free?

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

### Which has better reviews, Refraktions or Soi?

Refraktions is rated higher. Refraktions averages 4.5 out of 5 from 28 ratings, while Soi averages 4.0 from 2 ratings.

### Do Refraktions or Soi have ads?

Neither Refraktions nor Soi shows ads.

### Which is updated more often, Refraktions or Soi?

Refraktions ships an update every 2 months, and Soi every 2 months. Most recently, Refraktions was updated on October 10, 2026 and Soi on October 11, 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.*