SoundFonts

SoundFonts

Polyphonic soundfont synth

139 ratings
70 reviews
#162 in paid Entertainment
🎬 Entertainment
🎵 Music
$7.99

Details

  • Released
  • Updated
  • February 19, 2019
  • June 16, 2026

Features

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About

This app is a polyphonic audio synthesizer that uses soundfont files to generate a vast array of sounds. It functions as a standalone app and an AUv3 plugin, compatible with music creation software. MIDI input is fully supported for external keyboard control.

Polyphonic audio synthesis
Vast soundfont library
AUv3 plugin support
Reverb and delay effects
MIDI keyboard input
MIDI over Bluetooth
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What's New in SoundFonts

2.32.5

June 16, 2026

• Fix crash in AUv3 component

Charts

Top Paid

📉 162-7

Entertainment

This app dropped -7 positions in Entertainment chart.

Last updated on July 23, 2026.

User reviews

Favorite plugin but issues after iOS 26

I’ve been enjoying using this plugin for GarageBand ever since I bought it more than a year ago! However, after updating to iOS 26, I started having issues with the plugin not being able to load. I tried redownloading GarageBand and the Soundfonts app, but I still had the same problem with it crashing and being unable to load. I think this is an essential app that makes GarageBand even better, so I really hope this is fixed. Thank you!
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Excellent app, responsive and helpful developer

I downloaded this app after my partner showed it to me and it blew my mind, I had no idea such a thing existed.

Initially I had trouble integrating it with Garage Band on my iphone, emailed the developer and they got back to me within hours with a solution that completely solved the problem.

This is the order of steps I took that solved my personal problem (no sound coming through the audio unit in GB): closing Garage Band completely, uninstalling Soundfonts, restarting my phone, redownloading Soundfonts, opening Soundfonts and THEN opening Garage Band—problem solved.

Incredible work, highly reccomend this app.
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Response from developer

Thanks for taking the time to post your kind review. Glad to know everything worked out.

Great app for sf2s

A while ago some friends of mine who use this app for sf2-playing said they didn’t like how song exporting makes the tracks into sine waves, so they had to screen record it. I’m glad it was fixed recently.

Fantastic app! MPE support would be amazing.

(Please :)

I recommend

The app is almost perfect, i only have a couple complaints though, the app doesn’t have a way to shorten the release of the instruments, nor attack and sustain, it would be fantastic if this was added. My other complaint is that the app will sometimes crash garage band if you have too many soundfont players, I’m not sure if it’s this, or garage band. But overall, i highly recommend this if you use garage band.
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Developer apps

FAQ

What does this app do?

This app is a polyphonic audio synthesizer that allows you to generate a wide variety of sounds using soundfont (SF2) files. It can be used as a standalone application or as an AUv3 plugin within other music creation applications.

How do I add new sounds to the app?

You can add new soundfont files by tapping the '+' button and locating the SF2 file on your iCloud Drive. You can then rename soundfonts by swiping right on their name and remove them by swiping left.

Is this app free to use?

Based on the provided information, this application is a paid app. There are no mentions of in-app purchases or advertisements, indicating a one-time purchase model.

Can I use this app with a MIDI keyboard?

Yes, the app fully supports MIDI input. You can connect a MIDI keyboard or controller to your iOS device, or use MIDI over Bluetooth, to control the synthesizer and its settings.

What are the key features of this synthesizer?

Key features include polyphonic audio synthesis, a virtually unlimited collection of sounds via soundfonts, AUv3 plugin compatibility, built-in reverb and delay effects, and comprehensive MIDI input support.