Comparison

Synesthesia Synth vs S

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

Head to head
About

Synesthesia Synth

An experimental audio-visual instrument that allows users to sculpt evolving spatial audio by manipulating floating capsules. Position, rotation, and pulse changes affect tone, texture, and synchronized particle generation. It's a visual synthesizer, not a game.

Highlights
  • Experimental audio-visual instrument
  • Sculpt evolving spatial audio
  • Manipulate floating capsules
  • Control tone, texture, and particles
  • Visual synthesizer
Read full description

Synthaestesia is a free experimental audio-visual instrument. Three capsules float in space. Every contraction produces sound. Move them, rotate them, reshape their pulse — and sculpt evolving spatial audio. Position changes tone. Rotation alters texture. Delay generates synchronized particles. This is not a game. It’s a spatial synth you can see.

About

S

This app is a polyphonic synthesizer that works with specific hardware. It offers a variety of sound engines, filters, and effects for creating unique audio textures. Advanced modulation options and a flexible routing system allow for deep sound design.

Highlights
  • Dual engine slots per voice
  • Multiple sound flavors (analog, wavetable, FM, speech)
  • Classic and Modern filter modes
  • Advanced FX rack
  • Two free-routing LFOs
  • Unified mod matrix
  • Standalone, AU, and AUv3 formats
Features
Read full description

s-2 is a polyphonic synthesizer designed to work with the Roland AIRA Compact S-1. ENGINE Each voice runs two parallel engine slots that mix together. Pick a sound flavor per slot, including: • Classic analog — saw, square, sub, noise, pulse-width • Wavetable • FM • Speech • Chord • Plucked string FILTER AND FX Classic mode runs a vintage-style ladder filter into a simple Delay → Chorus → Reverb chain. Modern mode swaps in a multi-mode SVF (LP / BP / HP) followed by a 3-slot Advanced FX rack with Bitcrusher, Drive, Flanger, Phaser, Auto-Filter, Tape Delay, Plate Reverb and Chorus. MODULATION Two free-routing LFOs (sine / triangle / saw / square / random / noise, with optional clock-sync), a dedicated filter envelope with two destination slots, and a unified mod matrix dialog that visualizes every routing in one place. Click any knob in Learn mode to assign — no digging through menus. FORMATS • Standalone for iOS • Audio Unit (AU) for Logic Pro and other AU hosts • AUv3 plugin for iPad / iPhone in AUM, GarageBand, Cubasis and more - s-2 is an independent third-party application. It is not affiliated with, sponsored by, or endorsed by Roland Corporation. "Roland", "AIRA", "AIRA Compact", and "S-1" are trademarks of Roland Corporation, used here only to describe MIDI compatibility between this app and that hardware.

Screenshots

Synesthesia Synth2 screens
S3 screens

Verdict

The call

The clearest difference is rating: Synesthesia Synth at 5.0 against S's 4.5. Synesthesia Synth also leads on update cadence (every 10 days vs every 6 weeks). On price, ratings volume, 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.

ReceptionRating · Positive reviews · Number of ratings

Synesthesia Synth holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 2 and 4 respectively.

UpkeepUpdate frequency

Synesthesia Synth ships an update every 10 days, S every 6 weeks. The most recent releases landed on October 3, 2026 and September 26, 2026 respectively.

Scorecard2 real differences · 8 level
Synesthesia Synth versus S: the parameters behind the verdict, then further details
ParameterSynesthesia SynthS
PriceFreeFree
Rating5.0 (2 ratings) — better4.5 (4 ratings)
Positive reviews—0.0% of reviews
Number of ratings24 — better
Update frequencyEvery 10 days — betterEvery 6 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.016.0
Further details — not scored
Size141 MB17 MB
Age rating4+4+
DeveloperMICHELE ZACCAGNINIMathias Kirkerød

In-app purchases

None

Synesthesia Synth

No in-app purchases

None

S

No in-app purchases

Questions

Is Synesthesia Synth free?
Synesthesia Synth is free to download, with no in-app purchases.
Is S free?
S is free to download, with no in-app purchases.
Which has better reviews, Synesthesia Synth or S?
Synesthesia Synth is rated higher. Synesthesia Synth averages 5.0 out of 5 from 2 ratings, while S averages 4.5 from 4 ratings.
Do Synesthesia Synth or S have ads?
Neither Synesthesia Synth nor S shows ads.
Which is updated more often, Synesthesia Synth or S?
Synesthesia Synth ships an update every 10 days, and S every 6 weeks. Most recently, Synesthesia Synth was updated on October 3, 2026 and S on September 26, 2026.

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