iCathedral Organ 4+

Virtual MIDI Organ Sound App

Christian Schoenebeck d/b/a Crudebyte

    • 4.2 • 11 Ratings
    • $14.99

iPad Screenshots


Play with the sound of an entire cathedral organ, created by award-winning sound designer Kurt Ader! This app is designed as professional sound module for your iPad by connecting external MIDI keyboard(s) using Bluetooth MIDI, or using the Apple USB adapter or another adapter supported by Apple.¹

Watch and listen to the demo video on our product website!

This app supports Audio Unit v3, Audiobus and Inter-App Audio for audio & MIDI connections from/to other audio apps, as well as Bluetooth LE MIDI !

iCathedral Organ generates the sound of a lovely and color rich pipe organ of a real cathedral. All individual organ stops of such a pipe organ were recorded to resemble this sound as realistic as possible. You can fully adjust all individual organ stops to create your own sounds and save them as your personal sound presets. Or simply select one of the factory presets to play impressive organ sounds right from the start.

The sounds of this app were created by Kurt Ader, winner of the NAMM 2015 "Best Sound Designer of the Year" award.

General Features:
• 28 individual organ stops, each one controllable simultaniously in real-time.
• Polyphony up to several hundred stereo voices.²
• Configurable audio latency down to 1 ms.
• Low latency disk streaming.
• Integrated cathedral reverb effect.
• App can keep running in the background, so you can play on your keyboard while e.g. using Safari or another app to display scores or surfing the Internet.
• Master Tune, Scale Tuning & Hermode Tuning.
• Provides Audio Unit v3 plugin version of this app, which allows it to be used as virtual instrument directly within third-party multi-track DAW apps (requires iOS 9.3 or higher).
• Audiobus support.
• Supports Apple's "IAA" system for audio & MIDI streaming between other apps.
• Virtual on-screen piano keyboard, scalable & scrollable.

MIDI Player / Recorder:
• Record, save and load your songs in standard MIDI file format.
• Share your songs easily as audio file.
• Unlimited amount of tracks.
• Unlimited recording and playback length.
• Open MIDI (.mid) files directly from other apps (i.e. from Safari, Mail).
• Download or upload MIDI files with iTunes.
• Load your favorite songs as MIDI files from the Internet, and watch at the virtual keyboard how to play it.
• Metronome.
• Use the "Tempo Zoom" dial knob to i.e. slow down playback at any time and learn your favorite songs more easily.

There is no in-app purchase in this app. So all sounds and all app features are immediately available to you as one buy.

¹ For more information about adapters and connecting external MIDI keyboards: https://doc.crudebyte.com/iOS/External_MIDI_devices/

² Some sound presets are using several voices per note. Polyphony depends on the exact device model being used. You find a polyphony table on our product website.

Anti-Spy Commitment: We take your privacy very seriously. None of our apps contain so called „spy” behaviors and we committed ourself to a very high privacy standard. For more information about our privacy commitment, read our „Privacy Policy for Mobile Apps”.

What’s New

Version 2.3.1

This update fixes the following software issue introduced by recent feature update:

• Fixed a potential crash when switching to a different sound.

Ratings and Reviews

4.2 out of 5
11 Ratings

11 Ratings

bichpham ,

Best Sound

Best sounds and presets however presets cannot be changed fast enough. I use midi designer app to change preset with 1 click but it's still not fast enough and also not smooth. It needs to have organ stops, pistons, and preset like real organ. It also should have midi learn capability as well. It also needs to have the ability to customize keyboard for great, swell, choir, and pedal. It's a great app if you can use multiple ipads to accomplish the above. I use Jeux D'orgues app as well but this app sounds better. Jeux D'orgues does have the functionality above but this app preset is better. Overall it is a great app but still needs a lot of work to make it practical for an organist. It would be great if we could have iPhone app available as well by the way. Just a quick feedback for crudebyte developers....

stevekeyz ,

Spectacular design

However, sample quality could be cleaner. Some distortion audible through amplification.

Si Joni ,

The latest version consuming huge battery resources

I am using ipad mini 2

App Privacy

The developer, Christian Schoenebeck d/b/a Crudebyte, 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.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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