OctanaSynth: MIDI Synthesizer

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Everyone
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About this app

Transform your Android device into a versatile, low-latency MIDI synthesizer with OctanaSynth. Designed for musicians, producers, and enthusiasts to create, experiment, and play anywhere, the app is powered by the robust FluidSynth engine, ensuring compatibility and high-quality sound.

KEY FEATURES:

🎹 SoundFont Support (SF2, SF3, and SFZ): Load your favorite sounds and expand your library. Use the included default SoundFont to start playing immediately.

📚 Expanded SoundFont Library: Download over 40 additional high-quality instruments (grand pianos, synths, woodwinds, and percussion) directly from the app to expand your sonic palette.

🎙️ Audio and MIDI Recorder: Capture your practice sessions and live performances. Record in MP3 format (free) or export in high-fidelity WAV and raw MIDI files (Pro features) for professional use in any DAW.

💾 Powerful Presets: Create and save your custom sounds. Each preset stores instrument layers, mix levels, and effects configurations for instant recall during your performances.

🎚️ Multi-Track and Layers: Organize your instruments into customizable tracks. Layer multiple sounds to create rich textures or control them individually within a single preset.

🎹 Split Zones: Define specific note ranges for each instrument. Create keyboard splits (e.g., bass on the lower octave, piano on the upper) or complex layered zones to perfect your setup.

⚡ Flux Driver (Pro): Experience ultimate low-latency performance. The highly optimized Flux Driver ensures immediate response between your touch and the sound, perfect for professional live performances.

🔊 6-Band Equalizer (Pro): Precision-shape your sound with a 6-band EQ to ensure it stands out in the mix exactly how you want.

🎛️ Flexible FX System: Add depth to your sound with built-in Reverb, Chorus, Delay, Equalizer, and MIDI Filters. Control effects globally on the Master track or independently for each instrument track.

🎨 Design and 10 Visual Themes: Navigate effortlessly with a modern interface designed for quick access. Choose from 10 exclusive color themes (5 light and 5 dark) to adapt the app to any stage lighting or environment.

🔗 Comprehensive MIDI Mapping: Take full control. Map your keyboard or MIDI controller's knobs and faders to trigger presets, adjust track volumes, control transposition, octaves, gain, and more.

📂 Workspace Management: Save and load complete stage setups. Each workspace stores your SoundFonts, preset list, MIDI mappings, and global settings.

🔌 Flexible Connectivity: Easily connect to MIDI devices via USB or Bluetooth for a seamless playing experience.

⏱️ Integrated Metronome: Keep perfect time from 20 to 300 BPM. Customize the time signature (from 1 to 13 beats) and select from 5 different timbres (Standard, Wood Block, Cowbell, Metallic, and Click) with dedicated volume control.

🎹 Smart Multi-Device: Connect multiple controllers simultaneously. With automatic connection, new devices can be added during a performance without interrupting the sound.


OTHER FEATURES:

- Global control for Gain, Transposition, and Octave.
- Playback modes per instrument (all notes, highest note, lowest note - allowing it to function, for example, as an organ pedalboard).
- Velocity sensitivity adjustment per instrument.
- Support for Oboe audio driver (high performance).
- Option to keep audio active in the background.

Whether practicing, composing, or using it as a sound module for live performances, OctanaSynth is the ultimate tool you need.
Updated on
Jul 6, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
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No data collected
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What’s new

- Integrated recording system added
- Complete metronome system added
- Support for SFZ files (via automatic conversion to SF2)
- New advanced FX system, including support for tracks
- Auto-connect feature for MIDI devices
- MIDI output ports implemented
- General usability and accessibility improvements
- New themes added (9+ light and dark options)
- Customizable toolbar added
- And much more!