MarcMoerd 4+

Markus Sigg

    • 5.0 • 2 Ratings
    • $74.99


This app makes the Marcussen/Moerdijk pipe organ sample set available for playing with MIDI keyboards and a MIDI pedal connected to your iOS or macOS device. The sample set of the organ of the former St. Stefanuskerk in Moerdijk, Netherlands, is used with the kind permission of Ariaan Hoogendijk.

For more information about the app and the underlying Napo framework, please visit the support page , the Napo documentation at and in particular the user manual at .

*** For your attention ***

This app is a huge download of nearly 2 GB. Make sure there is enough free SSD space on your device.

What’s New

Version 2.5

Upgraded to Napo 5.17.2. Fixes dysfunctional windchest volume controls and tremulants as well as breakdowns of the app when the user tries to configure the behaviour of MIDI controllers 64 and 66.

Ratings and Reviews

5.0 out of 5
2 Ratings

2 Ratings

mark98270 ,

Excellent pipe organ sound

Great app to simulate a real pipe organ. Compact enough to run comfortably on most iPads, iPhones, and Macs.

mark98270 ,

Great virtual pipe organ

Great little virtual pipe organ similar to the Pitea pipe organ, and great accompaniment to the Pitea when played simultaneously.

Text labels on the pipe stops would be better if the same larger and bolder font as the Pitea were used for Mac version, but especially iPad and iPhone versions.

Would also love to see the NAPO framework allow 12 semitones of adjustment up and down, and specific selection of MIDI-in and MIDI-out.

App Privacy

The developer, Markus Sigg, 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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