Comparison

Soi vs Tonkro

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

Tonkro

Features
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MAKE MUSIC BY TOUCHING THE MACHINE Tonkro is a playful music workstation for iPad: part synthesizer, sampler, drum machine, sequencer, recorder, editor, mixer, and DJ performance space. SHAPE ORIGINAL INSTRUMENTS Explore distinctive synth and drum engines through four expressive controls. Each workshop is built to feel immediate: touch the illustrated machinery, hear the result, and let the characters react to your performance. SAMPLE THE WORLD Record through the microphone or import audio. Play one sound chromatically, divide it into untransposed slices, or map multiple samples across keys and pads. Trim, crop, loop, reverse, fade, change speed, transpose, and preserve the original recording with non-destructive editing. FIND RHYTHMS YOUR WAY Seven sequencer personalities turn taps, held notes, patterns, gestures, and playful systems into musical motion. Tempo, transport, MIDI, and recording stay connected, so a sketch can become an arrangement without breaking the flow. RECORD AND ARRANGE Build with eight stereo tracks. Record audio or notes, edit clips and piano-roll performances, overdub, punch, loop, lift, drop, mix, export stems, and save portable project bundles. PERFORM WITH MONSTER DECKS Load two tracks, set beat grids, sync, use key lock, cue points, hot cues, quantized loops, EQ, filters, pitch bend, and the crossfader. Record the performance or print it directly into the tape arrangement. MADE FOR PLAY Tonkro keeps its creative tools visible, touchable, and full of character. It works without an account, advertising, or third-party analytics. Your projects, recordings, and imported samples remain on your iPad unless you choose to export or share them.

Screenshots

Soi4 screens

Verdict

The call

The clearest difference is update cadence: Tonkro at every 3 weeks against Soi's every 2 months. Soi's advantage is device support (3 vs 1) and iOS requirement (10.3 vs 18.0). On price, ads and in-app purchases 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Soi ships an update every 2 months, Tonkro every 3 weeks. The most recent releases landed on November 1, 2026 and October 26, 2026 respectively.

Scorecard3 real differences · 7 level
Soi versus Tonkro: the parameters behind the verdict, then further details
ParameterSoiTonkro
PriceFreeFree
Rating4.0 (2 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPad
Requires iOS10.3 — better18.0
Further details — not scored
Size28 MB48 MB
Age rating4+4+
DeveloperAero DekoBipasha Nayak

In-app purchases

None

Soi

No in-app purchases

None

Tonkro

No in-app purchases

Questions

Is Soi free?
Soi is free to download, with no in-app purchases.
Is Tonkro free?
Tonkro is free to download, with no in-app purchases.
Do Soi or Tonkro have ads?
Neither Soi nor Tonkro shows ads.
Which is updated more often, Soi or Tonkro?
Soi ships an update every 2 months, and Tonkro every 3 weeks. Most recently, Soi was updated on November 1, 2026 and Tonkro on October 26, 2026.

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