ModSynth Modular Synthesizer app icon

ModSynth Modular Synthesizer

A polyphonic modular synthesizer for Android

BJ Owings · com.gallantrealm.modsynth

5.0 (1 rating) 100K+ downloads v8.00 12 MB Android 5.0+ PEGI 3 · Everyone

Download APK 12 MB All versions
  • Signature matches the Google Play version Details

At a glance

Latest version
v8.00 (800)
Updated
Apr 21, 2026 (6 months ago)
APK size
12 MB
Requires
Android 5.0+ (API 21)
CPU support
x86 32-bit, x86 64-bit, ARM 32-bit, ARM 64-bit
Category
Music & Audio (app)
Listed since
Nov 16, 2021 (at least)
Permissions
8 (2 sensitive)
Website
bjowings.weebly.com
Developer contact
[email protected]

About this APK

ModSynth Modular Synthesizer is an app by BJ Owings in the Music & Audio category, listed since at least November 2021. It includes native code for x86 32-bit, x86 64-bit, ARM 32-bit and ARM 64-bit, so it runs on practically every phone.

Since version 7.06, the APK grew from 9.6 MB to 12 MB and the minimum Android version rose from 4.0 to 5.0. It asks for 8 permissions, 2 of them sensitive: read shared storage and modify shared storage. It asks for the same permissions as version 7.06. The app offers in-app purchases through Google Play.

What's new in v8.00

- Modernized recording save logic. (Note that this causes a new ModSynth folder to be created for new recordings.) - Updated Google Play billing as required by Google.

Description

From the listing uploaded by “appupdater”.

ModSynth is a powerful modular synthesizer allowing construction of complex polyphonic instruments. Connect any number of oscillators, filters, delays and other synthesizer modules in a graphical editor. Adjust the settings of each module while playing the instrument to get a desired sound. Save as many instruments or variants of an instrument as you'd like. Ten built-in instruments are provided to help you get started. The free version contains the following modules: - Keyboard - Pad (for theremin and "scratching" effects) - Oscillator - Filter - Envelope - Mixer - Amp - LFO - Sequencer - Delay (echo) - Output (with scope to see the sound) In-app purchase the full version ($5 US) to expand polyphony (from 3 voices to 10), unlock advanced capabilities, and access these additional modules: - Arpeggiator for sequential playing of the notes in a chord - Melody for more complex sequences of notes - MultiOsc for strings and other chorus sounds, - Unison for more complex chorusing, - Operator for building FM synthesis, - PCM for sampled sounds (WAV and SF2 SoundFont files), - Reverb for simulating room acoustics. - Crusher for adding digital distortion. - Compressor to combine all voices and even the sound levels - Pan to direct sound to either left or right stereo channels. - SpectralFilter to control the spectrum of a sound with a bank of 25 bandpass filters - Function module allowing entry of an arithmetic expression for the module's function The full version also provides the ability to record sounds to a WAV file. ModSynth has support for external MIDI controllers such as keyboards or DAWs, including mapping of controls to CCs. It has low latency on devices supporting Android low latency. All oscillators are anti-aliased, providing low distortion at higher frequencies. A guide to using ModSynth can be found at http://bjowings.weebly.com/modsynth.html . A VST plugin is available to run ModSynth created instruments on VST hosts on Windows. See http://bjowings.weebly.com/modsynthvst.html for the free download and instructions.

Version history

2 versions are listed, going back to v7.06. Since v8.00 it requires Android 5.0+.

v8.00 LATEST Apr 21, 2026 12 MB TRUSTED v7.06 Jan 7, 2026 9.6 MB TRUSTED

All 2 versions

Security & authenticity

Security rating: Trusted

Signing certificate

  • Signature matches the Google Play version Checked by the source store on Apr 21, 2026.
  • Certificate issued to “GallantRealm.com” This is the certificate of the Google Play version.
  • Same certificate as the other version checked

Store checks and file details

  • Developer signature verified Apr 21, 2026
  • Validated against Google Play Apr 21, 2026
  • Signed byCN=Unknown, OU=Unknown, O=GallantRealm.com, L=San Jose, ST=California, C=US
  • Signing certificate (SHA-1)31:34:21:A3:AB:BF:7B:3C:7A:21:76:C7:E2:4F:4C:DB:71:9D:28:CA
  • File MD590722dba63ad869ed9f5703836c664d8
  • Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (1 other version compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (8)

ModSynth Modular Synthesizer requests 8 permissions, 2 of them sensitive.

Required hardware & features

ModSynth Modular Synthesizer APK: questions and answers

Is there a version of ModSynth Modular Synthesizer for older Android phones?

The current version needs Android 5.0 or later. Version 7.06 is the newest listed build that installs on Android 4.0 and later. Get version 7.06 · All versions

Can I install this APK over the version I already have?

Yes, if your installed copy is older. It is signed like the Google Play version, so Android installs it as an update and keeps your data.

Is ModSynth Modular Synthesizer free?

The APK is free to download, but the app offers in-app purchases through Google Play.

Is the ModSynth Modular Synthesizer APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. Its signature matches the Google Play version. It is signed with the same certificate as the other version checked. After downloading, check that the file's MD5 is 90722dba63ad869ed9f5703836c664d8.

Tags

gallantrealm modsynth music audio

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