Synth 4+

Modern polyphonic synthesizer

Retronyms Inc

Designed for iPad

    • 3.3 • 19 Ratings
    • $0.99
    • Offers In-App Purchases

iPad Screenshots


Grab our Synths Bundle to use Phase84, Stryke, and Synth together!

Synth is an incredible polyphonic synthesizer for your iPad. Create your own sounds with the microphone, and relive all of your Casio SK1 dreams. Synth was used by Gorillaz in recording their album, “The Fall.” Synth’s parameter editor provides professional control and sound design via an in-app purchase.

Connect Synth to drum machines, sequencers, and more in Tabletop for iPad. Tabletop is an expandable studio with over a dozen included musical devices. Tabletop is a modular environment where you can mix and match different devices. Select from over 40 devices including samplers, mixers, effects, sequencers and more. Buy only the gear you need from an expanding catalog.

Need help? Email and we’ll answer your questions.

Main Features:
- Mod wheel
- Pitch-bend wheel
- Adjustable delay
- Adjustable distortion

What’s New

Version 2.23

This app has been updated by Apple to display the Apple Watch app icon.

We updated Synth to be compatible with iOS 11.

Ratings and Reviews

3.3 out of 5
19 Ratings

19 Ratings

Markus012345 ,

Good. Sorta

When it works, it works wonders. However I've been switching between this and Figure and when I swipe to go back, sound no longer is outputted. I have to restart the app to get audio output again. Please fix it. I love the sounds but I need to be able to switch between apps and have this still work for me.

Chris aka silver aka yung C ,

Not compatible with own apps

Not compatible with mpc

Developer Response ,

Thank you for reaching out to us with your feedback. We appreciate the time and effort you and all of our Music Makers have invested in our apps and writing reviews. We are constantly working to fix bugs in Synth when they appear and your feedback is a vital part of this process.

Please reach out to us at with your experience so we can get the details of your situation and work on a solution. The world would be dull and boring without Music Makers like you.



This is app is crap!

No MIDI support and it doesn’t work with their Tabletop app.

App Privacy

The developer, Retronyms Inc, has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.

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