Mi-03 Bassline 4+

303-inspired synth (AUv3‪)‬

Darren Mothersele

Designed for iPad

    • 5.0 • 4 Ratings
    • $2.99

iPad Screenshots


A unique take on the classic acid bassline sound. The Mi-03 is an instrument that revitalises the classic 303 sound for today's music producers. (AUv3)

Standalone synthesizer and AUv3 plugin for iPad music production with AUM or any software that supports AUv3 plugins.

Now includes the sequencer component as a separate additional AUv3 plugin so you can use the sequencer to control any of your other favourite AUv3 instruments (using an AUv3 compatible host application such as Logic or AUM).

The Mi-03 is an instrument that revitalizes the classic 303 sound for today's music producers.

At it's core, the Mi-03 is a simple subtractive monophonic synthesiser. A long list of features might sound good on paper, but too many options can stifle creativity. The Mi-03 doesn't try to do everything. Important design decisions have been made, but with just enough creative control to craft your own unique sound.

Modern Quality Sound.

Powered by a high-quality, alias-free waveform engine, offering both the original's renowned tones and additional shape options for extended sound design capabilities.

Classic Rave.

Includes an enhanced sequencer for creating recognisably acid patterns, alongside a user-friendly interface for effortless integration into any production setup.

Built in distortion.

Ideal for various music genres, the Mi-03 excels in producing detailed basslines and leads. Notably, it features a built-in distortion engine with flexible routing, adding a layer of grit and character to your sounds.

What’s New

Version 1.4.3

Adds a MIDI output bus so you can record the generated MIDI, or use the sequencer to control other instruments. The sequencer is also now provided as a separate AUv3 MIDI effect for use in compatible hosts.

Ratings and Reviews

5.0 out of 5
4 Ratings

4 Ratings

Project: Punk Mayhem (Farabi) ,

Be prepared to take rank No. 1

That’s just only based on the sound I’ve heard. Get a good video on YouTube as soon as possible,

I couldn’t find a scale changer, kindly add that asap!

Everything is great on your side! Use this , otherwise someone else will take this opportunity you’ve been given!

1) detailed YouTube tutorial video
2) manual if possible
3) god bless

P.s. I wouldn’t have bothered to write this down, but the potential I’ve seen hidden, that’s just immeasurable.

Use this chance to be the best! Nobody remembers the second, can you tell who was the second guy went to the moon?

Love and hugs!

Developer Response ,

Thanks for the useful feedback. I will be adding a scale filter to the sequencer in the next version. More improvements coming when I get time :)

App Privacy

The developer, Darren Mothersele, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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