---
title: "RDX - FM Manager - Reviews, Revenue and Downloads in Grenada | Apple App Store"
description: "RDX turns your iPhone, iPad, Mac or Android into a complete librarian for classic 6-operator FM (.syx) cartridges — with real preview.  Open .syx banks (32 or 64 voices) and HEAR every patch instantly"
---

# RDX - FM Manager — Grenada

![RDX App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/44/c5/37/44c5378f-fd70-af9f-b063-78524cc1e708/AppIcon-0-0-1x_U007epad-0-1-85-220.png/434x0w.png)

**Developer:** [Rubens Felicio](https://apptail.io/developer/rubens-felicio-QUsanc) (Brazil)
**Category:** Music
**Rating:** N/A (0 ratings)
**Price:** Free
**Bundle ID:** com.rsfelicio.rdx7
**Store:** Apple App Store
**Country:** Grenada
**Version:** 1.9.0 (released 2026-10-16)
**Original Release:** 2026-06-24
**Languages:** English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/gd/app/app/id6783084652)
**AppTail Page:** [https://apptail.io/app/rdx-fm-manager-uINA/grenada](https://apptail.io/app/rdx-fm-manager-uINA/grenada)

## RDX Description
RDX turns your iPhone, iPad, Mac or Android into a complete librarian for classic 6-operator FM (.syx) cartridges — with real preview.

Open .syx banks (32 or 64 voices) and HEAR every patch instantly, played by a faithful 6-operator FM engine, right on your device. No cloud, no account, no subscription.
• Real FM preview — play each voice on its own or stack several in a layer
• Velocity-sensitive keyboard + sustain pedal (CC64) + the authentic DX7 velocity curve
• Organize your collection: rename, drag to reorder, group, delete and merge voices
• Export fresh .syx cartridges for your DX7 or other apps
• Original "RSJB Signature" factory bank included — electric pianos, pads, strings and organs
• Multiplatform: iPhone, iPad, Mac, Android and Web — plus an AUv3 plugin to play inside AUM, GarageBand, Logic and more
• One-time purchase. Everything stays on your device.

Built for DX7 owners, FM patch collectors, and anyone who wants to explore FM synthesis without the hardware.

RDX is an independent product, not affiliated with Yamaha.

## RDX Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/fb/8a/29/fb8a2984-a905-c9ab-5983-cdbf54d06ef1/iphone-1-library.png/1242x2688.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/b5/ae/5e/b5ae5e9f-d20c-f0b9-7bac-9a2759b617b1/iphone-3-settings.png/1242x2688.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/32/1e/66/321e6610-72cc-f06d-badb-024aecf23ea0/iphone-2-about.png/1242x2688.png)






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## RDX Available In
- [Belarus](https://apptail.io/app/rdx-fm-manager-uINA/belarus)
- [Switzerland](https://apptail.io/app/rdx-fm-manager-uINA/switzerland)
- [Grenada](https://apptail.io/app/rdx-fm-manager-uINA/grenada)
- [Ireland](https://apptail.io/app/rdx-fm-manager-uINA/ireland)
- [South Korea](https://apptail.io/app/rdx-fm-manager-uINA/south-korea)
- [Sweden](https://apptail.io/app/rdx-fm-manager-uINA/sweden)

---

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