Comparison

Soi vs Polybeep

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Soi

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
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Become part of the magic of creation and improvisation. Join in with friends, family, or anyone and make music together. Soi is an expressive instrument that allows for a group of any size to perform as an ensemble. Soi automatically harmonises and synchronises each of the participants to help everyone to feel engaged. There are no wrong notes!

About

Polybeep

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
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From the creators of DefleMask and Minimic, introducing Polybeep, a magnificent polyrhythmic sound machine designed to unlock your creativity. We even prepared a built-in tutorial to get you started. With aesthetically pleasing colors and design alongside unmatched visual feedback, you can really feel the beeping beeps and the poly rhythms. Yes, you can set up polyrhythms as easy as 3-4-5. You can record sounds directly from your microphone or load sample files. There’s some magic to make them sound great. Arrange the sounds into up to 6 looping shapes that can be configured as polygons of 3~16 vertices, then tweak their effects (delay, reverb, EQ, panning, chorus, and more), make a sequence of many melodies, and you’ll have a song in no time! You can even tap to change the tempo based on a rhythmic pulse. MIDI device input is as well supported! MIDI output coming soon! (notes, sync) macOS version is also available! Polybeep has been designed with a touch screen in mind from day one but it works perfectly fine on computers. When ready, you can save your songs and export them to wav files. We’d love to hear the songs that you come up with!

Screenshots

Soi4 screens
Polybeep4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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

Scorecard6 real differences · 4 level
Soi versus Polybeep: the parameters behind the verdict, then further details
ParameterSoiPolybeep
PriceFree — better$4.99
Rating4.0 (2 ratings)4.7 (3 ratings) — better
Positive reviews0.0% of reviews50.0% of reviews — better
Number of ratings23 — better
Update frequencyEvery 2 monthsFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS10.3 — better12.0
Further details — not scored
Size28 MB101 MB
Age rating4+4+
DeveloperAero DekoLeonardo Demartino

Customer experience

Soi

All ratings2 ratings
Positive50.0%
Neutral50.0%
Negative0.0%
Written reviews1 reviews
Positive0.0%
Neutral100.0%
Negative0.0%

Polybeep

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

None

Soi

No in-app purchases

None

Polybeep

No in-app purchases

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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