S vs Etherpad
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
Etherpad
Create evolving soundscapes and ambient textures with an intuitive touch-based music synthesizer. Explore generative music without needing music theory, perfect for relaxation or creative expression.
- Multi-touch synthesis
- Multiple sound presets
- Visual particle effects
- Effect overlays
- Scale selection
- Landscape & portrait modes
- Low-latency audio
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Etherpad is an expressive touch-based music synthesis instrument for iPhone, iPad and your Mac. Sweep your fingers across the screen to create evolving soundscapes, ambient drones, and generative textures. (AUv3 support in Beta) Powered by the legendary Csound audio engine, Etherpad turns your device into a portable synthesizer that responds to every touch with rich, organic sound. No music theory required — just touch, listen, and explore. KEY FEATURES • Multi-touch synthesis — Each finger controls pitch and timbre independently • Distinct Soundscapes — Switch between evolving pad sounds and textures • Reactive Visuals — ripples, trails, rings, and column glow respond to every touch • 14 evolving sounds — from lush pads to Glass Choir, PWM Pad, and Morphwave • Advanced Scales & Tuning — Break out of standard keys and explore the Bohlen-Pierce scale, overtone series, pentatonics, and more • Jam Sessions — Load your own audio tracks directly into the app and play along with your creative flow • MIDI 2.0 — per-note expression and full MIDI support for connected controllers (Beta) • AUv3 plug-in — play Etherpad inside Logic Pro, GarageBand, AUM, and other hosts (Beta) • Ultra Low-latency audio — Built on Csound, the industry-standard audio engine PERFECT FOR • Ambient and drone musicians • Meditation and relaxation • Beginners exploring sound synthesis • Live performers and improvisers • Sound designers and experimental composers • Anyone curious about generative music Website: https://etherpad.app Touch the surface. Hear the universe.
Screenshots
Verdict
The clearest difference is review sentiment: Etherpad at 100% against S's 0%. Etherpad also leads on update cadence (every 2 days vs every 6 weeks) and rating (4.9 vs 4.5). On price, ads, in-app purchases and monetization model 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.
Etherpad holds the better App Store score, 4.9 against 4.5. That said, the two scores are not equally well evidenced: Etherpad has 20 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 0% of S's written reviews are positive against 100% of Etherpad's.
S ships an update every 6 weeks, Etherpad every 2 days. The most recent releases landed on August 9, 2026 and September 22, 2026 respectively.
| Parameter | S | Etherpad |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (4 ratings) | 4.9 (20 ratings) — better |
| Positive reviews | 0.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 4 | 20 — better |
| Update frequency | Every 6 weeks | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad, Mac — better |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 17 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Mathias Kirkerød | Dinesh Yadav |
Customer experience
S
Etherpad
In-app purchases
S
No in-app purchases
Etherpad
No in-app purchases





