Synesthesia Synth vs S
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Experimental audio-visual instrument
- Sculpt evolving spatial audio
- Manipulate floating capsules
- Control tone, texture, and particles
- Visual synthesizer
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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.
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.
- 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
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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
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
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.
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.
| Parameter | Synesthesia Synth | S |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | 4.5 (4 ratings) |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | 2 | 4 — better |
| Update frequency | Every 10 days — better | Every 6 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 | 16.0 |
| Further details — not scored | ||
| Size | 141 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | MICHELE ZACCAGNINI | Mathias Kirkerød |
In-app purchases
Synesthesia Synth
No in-app purchases
S
No in-app purchases









