FluidSynth MIDI Synthesizer

2.0.35

Volcano Mobile SNC

3.93

1,077 reviews

100,000+
Downloads

Free

Turn your device into a FluidSynth synthesizer.

FluidSynth MIDI Synthesizer Screenshot 1 of 5

FluidSynth MIDI Synthesizer Screenshot 2 of 5

FluidSynth MIDI Synthesizer Screenshot 3 of 5

FluidSynth MIDI Synthesizer Screenshot 4 of 5

FluidSynth MIDI Synthesizer Screenshot 5 of 5

Download from Google Play

Pros & Cons

FluidSynth-based synthesis for flexible MIDI sounds
SoundFont (.sf2) support for broad sonic options
MIDI hardware compatibility via USB OTG for real-time play
WAV recording of performances for easy sharing and editing
Open-source FluidSynth core provides transparency and community input

Requires external SoundFonts to function effectively; no built-in SoundFont bundled
Broad permission set (including location and ad IDs) may raise privacy considerations
No explicit on-screen keyboard or virtual instrument UI indicated in the data

About FluidSynth MIDI Synthesizer

FluidSynth MIDI Synthesizer is a music & audio app developed by Volcano Mobile SNC.

Download Statistics

FluidSynth MIDI Synthesizer has been downloaded 230 thousand times. In the last 30 days, the app was downloaded 2.7 thousand times.

User Ratings

FluidSynth MIDI Synthesizer is rated 3.93 out of 5 stars. The rating is based on 1.1 thousand ratings.

App Information

FluidSynth MIDI Synthesizer is FREE to download. The APK download size is 15.15 MB. The latest version available is 2.0.35. The last update was on October 28, 2025.

Technical Requirements

FluidSynth MIDI Synthesizer requires Android 6.0+ or higher. The app has a content rating of Everyone. The app has been available on Google Play October 2016.

Description

NOTE: A SoundFont (.sf2) is required to use this synthesizer.

Plug your device to your computer, or hook a MIDI USB master keyboard via an OTG cable to play with this low-latency FluidSynth 2.1.7 based Synthesizer.

- load SoundFont 2
- record your performances directly in WAVE files

This application uses a modified version of FluidSynth, you can find the source code here https://github.com/VolcanoMobile/fluidsynth-android

Show more Show less

More data about FluidSynth MIDI Synthesizer

Price	Free to download
Total downloads	230 thousand
Recent downloads	2.7 thousand
Rating	3.93 based on 1.1 thousand ratings
Ranking	Not ranked
Version	2.0.35
APK size	15.2 MB
Number of libraries	13
Designed for Android	6.0+
Suitable for	Everyone
Ads	NO ads

App Performance Report

Get a detailed PDF report for FluidSynth MIDI Synthesizer with download trends, rating history, and key performance statistics — useful for competitive research or tracking your own app. Learn more

Get PDF Report — $29

Alternative downloads for the FluidSynth MIDI Synthesizer app

FluidSynth MIDI Synthesizer compared with similar apps

Common keywords of similar apps

Fluidsynth Synthesizer Midi Device Soundfont

Keywords missing from this app

App Keyboard Piano Music Usb Expressive Support Play Synth Files Performance Time Devices Sound Audio Features Free Playing Keys Instruments Create Reverb Recent Controller Sounds Pitch Modulation Live Note Screen Https Export Synthesizers Fm Latency Custom Volume Record Instrument Karaoke Phone Mpe File Recording Real Control

Google Play Rating history and histogram

Rating history

Subscribe to see the full rating timeline

660

120

190

Downloads over time

Subscribe to see download velocity and history

FluidSynth MIDI Synthesizer has been downloaded 230 thousand times. Over the past 30 days, it averaged 90 downloads per day.

Changelog of FluidSynth MIDI Synthesizer

Show changelog

Developer information for Volcano Mobile SNC

Volcano Mobile SNC

contact@volcanomobile.net

Website

Legal name:

Address:

Phone number:

Are you the developer of this app? Join us for free to see more information about your app and learn how we can help you promote and earn money with your app.

I'm the developer of this app

Comments on FluidSynth MIDI Synthesizer for Android

★★★★★ nylesteiner · Oct 4, 2025

I give this app 10 stars but rating system only supports 5. This app plays all my sound fonts perfectly with filter and all midi controls etc. Working exactly as I set them up and with very low latency Wow!!!!! Only problem is no reverb. Fix that, and I will give you15 stars Reverb works fine and sounds very good now that I realized left channel reverb was cancelling right channel reverb. Setting the reverb width to zero fixed this and now all is well with the reverb.

★★★★☆ Bri Dono · Mar 11, 2023

Love the responsiveness (no latency) between keyboard and output. The app recognizes all the main midi commands. There's still plenty of SF2 sounds out there to take advantage of. The only issue is that I have been unable to find a way to delete any individual sound font. If you test out a sound font, and then don't like it, I can't delete it. I have to go to the apps data and delete that way, but that deletes all sound fonts. Even with that, I still highly recommend it! - Jack

★★☆☆☆ Kaden Ward · Aug 23, 2021

Was a good app for using a cheaper MIDI keyboard to play a cleaner sound front. New update has started to cause sound to crackle when playing, enough to the point that it's no longer usable. -Tested headphone, headphone aux cable, USB MIDI cable, and sound front file. -Tried disabling audio effects. -Tried changing in app volume.

★★☆☆☆ Alan Dens · Jul 5, 2022

Worked on a Casio WK 200 & Williams electronic keyboard, but I couldn't close the delay in the more than noticeable latency gap. Used it on an Alexis Q88 controller which had much less of a latency gap but worsening crackling in the audio, then the app stopped altogether transmitting through Bluetooth after I unplugged the usb B adapter end out. Will reinstall & see if I can get it going again tho, it had some promise being user-friendly up to a point. Used another device & Alexis Q88 controller

★☆☆☆☆ Dave Lennon-Copeland (Flickering State) · May 24, 2023

"Turn your device into a Fluid Synth synthesizer"... ONLY if you plug in a physical keyboard. There is no on-screen keyboard and no way to play midi files. This is just a fancy driver for a USB keyboard, kinda pointless really.

Google Play Rankings for FluidSynth MIDI Synthesizer

This app is not ranked

Technologies used by FluidSynth MIDI Synthesizer

16 permissions · 13 libraries

Subscribe to see full permission and library details

Popular Music & Audio Apps Apps on sale Top new apps Today's trending apps Apps other people are watching

AppBrain is a directory focused on discovering great apps and games. We give statistics, rankings and search options that Google Play and the App Store don't have. All trademarks are owned by their respective owners. AppBrain doesn't offer APKs or binaries, and always lets users install the official version from Google Play or the App Store.

More apps