About this app
OttOrgan lets you play the Ott-Orgel sample set of Christian Datzko on a MIDI keyboard and a MIDI pedal attached to your iOS or macOS device. The Ott organ is a house organ with five ranks at one manual and an attached pedal with a 16' subbass. If you would like to use the sample set with other software, you can get it at http://orgel.datzko.ch/main.EN.html. For more information, please consult the app support page http://polaron.de/OttOrgan/ , the Napo documentation at http://polaron.de/Napo/ and in particular the Napo user manual at http://polaron.de/Napo/manual . For hearing sound examples of the app, please visit the support page http://polaron.de/OttOrgan/ .
Latest release
What’s New
Upgraded from Napo 5.17.2 to Napo 5.18.1. - Bugfix in convolution reverb (delayed late reflections). - Pitch shifting range increased to ±200ç. - Loading saved settings is now be done by a short-tap. - Audiobus updated to version 3.0.15.1. Plus the changes of Napo 5.18 that you can read about in the Napo version history.
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Aug 20, 2026 · 9:28 PM $9.00
Screenshots
