# Soi vs Polybeep

The clearest difference is review sentiment: Polybeep at 50% against Soi's 0%. Polybeep also leads on rating (4.7 vs 4.0) and update cadence (fortnightly vs every 2 months). Soi's advantage is price (Free vs $4.99) and iOS requirement (10.3 vs 12.0). On ratings volume, ads, in-app purchases and device support there is nothing between them.

Soi is free to download; Polybeep costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Polybeep holds the better App Store score, 4.7 against 4.0. Both are backed by a comparable volume of ratings — 2 and 3 respectively. Written reviews point the same way: 0% of Soi's written reviews are positive against 50% of Polybeep's.

Soi ships an update every 2 months, Polybeep fortnightly. The most recent releases landed on October 11, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Soi | Polybeep |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | [4.0 (2 ratings)](https://appshunter.io/ios/app/soi/id986051970/reviews) | **[4.7 (3 ratings)](https://appshunter.io/ios/app/polybeep/id6471223455/reviews)** |
| Number of ratings | 2 | **3** |
| Positive reviews | 0.0% of reviews | **50.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Monetization | **Free** | Paid |
| Size | 28 MB | 101 MB |
| Requires iOS | **10.3** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Aero Deko](https://appshunter.io/developer/507882387) | [Leonardo Demartino](https://appshunter.io/developer/1390797125) |

## What reviewers say

### 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


### Polybeep

[App page](https://appshunter.io/ios/app/polybeep/id6471223455)

Create unique music with a polyrhythmic sound machine. Record or load samples, arrange them into looping shapes, and apply various effects. MIDI input is supported, and songs can be exported as WAV files.

**Highlights:** Polyrhythmic sound generation, Record microphone audio, Load sample files, Looping shape arrangement, Extensive audio effects, MIDI input support, Export to WAV

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

**In-app purchases:** none


## Frequently asked questions

### Is Soi free?

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

### Is Polybeep free?

Polybeep costs $4.99, with no in-app purchases.

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

Polybeep is rated higher. Soi averages 4.0 out of 5 from 2 ratings, while Polybeep averages 4.7 from 3 ratings.

### Do Soi or Polybeep have ads?

Neither Soi nor Polybeep shows ads.

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

Soi ships an update every 2 months, and Polybeep fortnightly. Most recently, Soi was updated on October 11, 2026 and Polybeep on September 30, 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.*