FluidSynth MIDI Synthesizer

In-app purchases
874 reviews
Content rating
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About this app

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
Updated on
Oct 25, 2021

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874 reviews
A Google user
August 10, 2019
Works incredibly well with my controller app BeatScratch! I plan to link to it from within the app. My one complaint: after switching SoundFonts, the synthesizer starts going kinda glitchy and restarting all the time. If I go into the Android app info for the settings, "Force stop" it, and then try again, FluidSynth plays everything beautifully. But something in switching the fonts is broken unless you do this.
28 people found this review helpful
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A Google user
April 13, 2019
Keystation Mini 32: 1)Easily recognizes & connects 2)Some internal sounds acceptable, others are a little thin. 3)With my keyboard it requires a lot of resources and power. 4)This demand tells me that sticking with my pc is only practical although on a basic level the software does work. It does what it is supposed to do.
7 people found this review helpful
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Volcano Mobile SNC
March 19, 2019
The synthesizer stops when you disconnect it. Either by unplugging the USB cable or by deselecting the device from the drop-down list. The notification should also goes away.
Eric Witherspoon
May 7, 2021
I have recently built a MIDI concertina. This app works significantly better than all of the other apps I have tried ~10. It plays the sound font with very low lateny, such that I do not notice it. It allows for panning, but currently all channels are panned (so this setting is not specific per channel). I built my device using Teensy, which I would reccomend. Both hands are split into separate channels. I do not see ads int he app currently (5/2021) and am not sure what the puchase unlocks.
31 people found this review helpful
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What's new

Stop fluidsynth when INPUT port is not connected