
About
This app acts as a librarian and player for classic 6-operator FM synthesizer patches (.syx files). It allows you to preview sounds, organize your collection, and export cartridges for hardware or software synths. It's designed for FM synthesis enthusiasts and DX7 owners.
What's New in RDX
1.8.0
August 14, 2026
Improvements on FM performance
User reviews
Developer apps
FAQ
What is RDX - FM Manager?
RDX - FM Manager is a mobile application that functions as a librarian and player for classic 6-operator FM synthesizer patches in .syx format. It allows users to preview, organize, and export these patches.
Does RDX - FM Manager have ads?
No, RDX - FM Manager does not contain advertisements. It is a paid application with a one-time purchase model.
What devices does RDX - FM Manager support?
RDX - FM Manager is available on iPhone, iPad, and Mac. It also offers an AUv3 plugin for use within compatible DAWs like GarageBand and Logic.
How often is RDX - FM Manager updated?
The latest version, 1.6.4, was released on July 21, 2026, indicating recent development activity. Updates typically occur to add features or improve performance.
Can I use RDX - FM Manager offline?
Yes, RDX - FM Manager operates entirely on your device without requiring a cloud connection or account. All functionality is available offline.
What is the age rating for RDX - FM Manager?
RDX - FM Manager has an age rating of 4+, making it suitable for a wide range of users interested in music synthesis.
Does RDX - FM Manager include any pre-loaded patches?
Yes, RDX - FM Manager includes the original "RSJB Signature" factory bank, featuring a variety of electric pianos, pads, strings, and organs.
What is the price of RDX - FM Manager?
RDX - FM Manager is a one-time purchase priced at $1.99. All features are unlocked upon purchase, with no subscriptions or in-app purchases.


