Psaltica Praxis is a mobile app for composing, editing, and studying Byzantine chant notation with a dedicated notation keyboard, lyrics support, structured composition tools, and playback features.
For technical support, bug reports, subscription questions, or general inquiries about Psaltica Praxis, contact:
Email: dev@kostantin.ca
To help diagnose issues quickly, please include:
Psaltica Praxis helps chanters, students, and composers write and study Byzantine notation directly on mobile devices.
If you have questions about subscriptions, purchases, or premium feature access, email support and include the platform used for the purchase and a description of the issue.
If a composition looks incorrect or playback behaves unexpectedly, send the device model, OS version, and a short example of what you entered and what happened instead.
If a backup or export file is not behaving as expected, include the workflow you used and whether the issue occurred during share, local save, or restore.
Psaltica Praxis is published by nadcost.
Support requests are handled through the contact email listed on this page. If you contact support, only the information you choose to send in your message will be received.
For privacy-related questions, contact: dev@kostantin.ca