S-2
12-voice polysynth
Free · Designed for iPad. Not verified for macOS.
Now with four additional macro oscillators, and a 16-step tape loop recorder. AIRA S-1 ready.
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
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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.
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
NEW
• 16-step Tape loop recorder (MIDI + audio) with Scratch FX
• Four new macro oscillators: chaotic FM, struck bell, twin peaks noise, feedback FM
IMPROVED
• Portamento now matches the AIRA Compact S-1
• Engine levels rebalanced
• Resonance and oscillator levels smoothed under modulation
FIXED
• 6-Op FM silent at default macros
• Tides pitch drift via LPG Decay
• Advanced FX Primary/Secondary shift collision
• Various UI fixes
The developer, Mathias Kirkerød, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Mathias Kirkerød
- Size
- 11.7 MB
- Category
- Music
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later. - iPad
Requires iPadOS 16.0 or later. - Mac
Requires macOS 13.0 or later and a Mac with Apple M1 chip or later.
- iPhone
- Age Rating
4+
- 4+
- Copyright
- © 2026 Mathias Kirkerod