RX-79
Breath synth for wind MIDI
$9.99 · In‑App Purchases · Designed for iPad. Not verified for macOS.
New sounds for the wind synth you know. Connect to iPhone or iPad and play warm woodwinds or bold synth leads. Tune the response to your breath and shape your own sound.
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/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
- New sounds including Sweet Bari, Sweet Harmonica and Trumpet 2 (41 built-in sounds)
- SJ PACK now has 10 sounds
- Jump between the Acoustic, Electric, SJ PACK and USER lists with the buttons at the bottom
- Saved sounds go to the USER list. Press and hold the display to rename one
- Open the list and tap PLAY to preview a sound
- Tap the left or right half of the OCTAVE pad to shift octaves, even while playing
- Plug in your controller and play right away, no app restart needed
- Quick start guide and 6 languages
The developer, sung ju KIM, 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.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- sung ju KIM
- Size
- 26.7 MB
- Category
- Music
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 5 more
- English, German, Japanese, Korean, Portuguese, Simplified Chinese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- SJ PACK $5.99
- Copyright
- © 2026 New Vibez