About this app
This app makes the equal temperament version of the Christian Zell 1737 harpsichord sample set available for playing with a MIDI keyboard connected to your iOS or macOS device. To learn about the instrument and the sample set, please visit http://samplesets.esmuc.info/ . There is also a meantone temperament version and a bundle of both apps. If you purchases one of the apps, you can download the other one for free by bundle completion. For more information about the app and the underlying Napo framework, please visit the support page http://polaron.de/Zell/ , the Napo documentation at http://polaron.de/Napo and in particular the user manual at http://polaron.de/Napo/manual .
Latest release
What’s New
Upgraded from Napo 5.18 to Napo 5.18.1. - Bugfix in convolution reverb (delayed late reflections). - Pitch shifting range increased to ±200ç. - Loading saved settings can now be done by a short-tap. - Audiobus updated to version 3.0.15.1.
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 Sep 12, 2026 · 12:41 AM $9.00
Screenshots
