OPL AUv3 FM Synth

OPL AUv3 FM Synth

OPL chip based synth

21 ratings
10 reviews
$9.99

Details

  • Released
  • Updated
  • June 4, 2020
  • March 6, 2026
OPL AUv3 FM Synth screenshot #1 for iPhone
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About

Emulates the iconic Yamaha OPL2 chip for classic game soundtracks and electronic music. Offers FM and additive synthesis with over 2000 presets and 16x oversampling for clear audio. Requires a MIDI keyboard for standalone use.

OPL2 chip emulation
FM and additive synthesis
Distinctive percussion mode
16x oversampling
Over 2000 presets
Standalone MIDI keyboard support
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What's New in OPL AUv3 FM Synth

2.7.2

March 6, 2026

Added App Data Group shared container between Standalone and AUv3 builds. Added Bluetooth MIDI device discovery dialog to settings menu. Added iTunes File Sharing support for SBI instruments. Added Carrier analog modeled wave shaper parameter. Fixed Carrier Multiplier label alignment.

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User reviews

This app sucks.

It just does.

Please add a keyboard… and version 2.7 breaks AU compatibility

First, version 2.7 update no longer works as an Audio Unit in GarageBand. Second, if you could add an onscreen keyboard it would make the app more useful as a standalone and speed up new patch creation. Thank you.

Incredible!

If you’re a FM nerd like me and were around when the first fm game music came about, you will absolutely love this. Very authentic, lovely lo-fi FM sound with endless presets and many sounds that will melt you with nostalgia. Superb!

Surprisingly cool sound possibilities

More inventive than it looks, a very nice source of unexpected sounds.

Sounds truly excellent but UI has some limitations, depending on your need.

For people who just want to load a patch from the tremendously large built-in library and integrate with a host for sequencing from another app (or playing via midi keyboard) this app would be great. Not so much for my purposes however, though I can’t fault it a great deal for this. It’s a fantastic emulation and the patches are solid and plentiful. Below I will explain why it didn’t work for me though, in case you are planning similarly:

Since this is an accurate emulation of a real hardware chip using a standardized OPL fm preset format, I was counting on there being an easy method for programming, testing and storing presets within the app. My goal in buying this was to have a portable way to create and build a library of my own original patches to use with Adlib Tracker ][. This use-case has proved mostly fruitless however for the following reasons—

1. The standalone app does not properly fit an iPhone screen (iPhone X at least); the bottom row of buttons runs below the edge of the screen.
2. There is no way to save your own patches directly inside the app, only load the existing presets.
3. There is no built-in keyboard, basically it’s a plugin more than an app and relies on a host to do most useful things.
4. On an iPad 11” I wasn’t able to scale the view to fit both the complete instrument UI and the AUM virtual keyboard on-screen simultaneously, making it cumbersome to edit, play and test custom patches. (Honestly this one might be user error, please correct if I’m wrong and there’s a way to achieve this)
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FAQ

What is OPL AUv3 FM Synth?

OPL AUv3 FM Synth is a music application that emulates the Yamaha OPL2 chip, known for its use in 80s and 90s video game soundtracks. It allows users to create classic game sounds and electronic music.

Does OPL AUv3 FM Synth require any additional hardware?

Yes, the standalone version of OPL AUv3 FM Synth requires a MIDI keyboard to be used. This allows for direct control and performance of the synthesized sounds.

How many presets are included with OPL AUv3 FM Synth?

OPL AUv3 FM Synth comes with over 2000 included presets. These presets provide a wide range of sounds for users to explore and utilize in their music productions.

What is the price of OPL AUv3 FM Synth?

OPL AUv3 FM Synth is a paid application priced at $9.99. This one-time purchase grants access to all its features and sound capabilities.

How often is OPL AUv3 FM Synth updated?

The latest version, 2.7.2, was released on March 6, 2026. While specific update frequency isn't detailed, the app has seen consistent development since its release in 2020.

What devices is OPL AUv3 FM Synth compatible with?

OPL AUv3 FM Synth is compatible with iPhone, iPad, and iPod devices. It is designed to run on Apple's mobile operating systems.

What is the age rating for OPL AUv3 FM Synth?

OPL AUv3 FM Synth has an age rating of 4+. This indicates it is suitable for users of all ages, with no mature content.

Does OPL AUv3 FM Synth have ads?

No, OPL AUv3 FM Synth does not contain advertisements. As a paid application, it offers an uninterrupted user experience without any ads.