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App Store Apps > Music > RX-79
RX-79 icon

RX-79

by sung ju KIM · Music · $9.99
On the App Store since October 2026 · Data updated 2026-10-31

RX-79 is made and published by sung ju KIM. AppBrain is an independent app data site and isn't affiliated with sung ju KIM. The app name, icon, screenshots and description belong to sung ju KIM and are shown as published on the App Store.

AppBrain's verdict

Last updated
October 24, 2026
Size
25.5 MB
Official page on the App Store

User feedback

Ratings and reviews on the App Store

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Store listing

By sung ju KIM, from the App Store
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Screenshots by sung ju KIM, from the the App Store listing
Description by sung ju KIM Written by the developer, not by AppBrain. Click to read.
Play the wind synth you know with a whole new set of sounds.
Warm woodwind tones for a soft ballad, bright synth leads for a bold solo.

RX-79 is a breath synthesizer that turns your wind controller and iPhone or iPad into a full sound module. Saxophonist SJsax shaped every sound and every response by actually playing it.

[Find the right sound for every song]
41 built-in sounds. 14 acoustic sounds including soprano, alto and baritone sax, clarinet, oboe, flute, trumpet, euphonium and harmonica, and 27 electric sounds including brass, leads and basses. Play the same melody in many different moods.
Tap the preview button in the sound list to hear a sound even without a controller.

[Fit it to your breath]
Adjust breath sensitivity, response curve, attack and decay, and set breath noise, tonguing and note-to-note connection to match your playing style.

[Make it your own]
Shape each sound with brightness, resonance, drive, vibrato, delay and reverb. Save the settings you like to the USER list and give them names. Saved sounds stay on this device.

[SJ PACK: 10 signature sounds, sold separately]
Extra sounds that carry SJsax's playing feel. Before buying, you can play each sound yourself for 30 seconds.
Note: SJ PACK is an in-app purchase sold separately from the app (one-time purchase).

[Connection]
Connect a USB MIDI wind controller. RX-79 responds to breath (CC2, CC11, aftertouch), pitch bend and vibrato (CC1).
Depending on the ports and power needs of your controller and iPhone or iPad, you may need a separate cable or adapter, such as a USB camera adapter.
Sound plays even with the silent switch on, and you can play along with backing tracks from other apps.
No internet connection required. No personal data is collected.

Connection and support
https://sjsax.com/rx79/
Official page on the App Store

Safety and technology

Found in the app by AppBrain
Price
$9.99
App size
25.5 MB
Content rating
Everyone

Technologies used by RX-79

Releases

Updates seen on the App Store
Version
1.0.1
Launched
October 2026

No changelog data

Alternatives

Similar apps and more from sung ju KIM

More from sung ju KIM

Band Session Note icon Band Session Note
sung ju KIM
5.0
$9.99
1 ratings

Rankings

App Store top charts

App Store Rankings for RX-79

This app is not ranked

About the app and developer

About RX-79

RX-79 is a music app developed by sung ju KIM.

What is the rating of RX-79?

RX-79 has no ratings yet.

Is RX-79 free?

RX-79 costs $9.99. The app size is 25.46 MB. The latest version available is 1.0.1. The last update was on October 24, 2026.

What are the requirements for RX-79?

The app has a content rating of Everyone. The app has been available on the App Store since October 2026.

Developer information for sung ju KIM

sung ju KIM

Address:

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