What is collected and how it is used?

Monal for iOS and MacOS will register for APNS push notifications. As part of the registration process, user’s IP address will be logged in the HTTP server logs when registering for notifications. All server logs are purged every two weeks and there isn’t any way to associate this with any particular individual.

All apps do track crashes and usage data anonymously. This is opt in only and controlled by iOS and macOs global settings. If a user decides not to send any data to developers no crash logs are sent to monal developers. 

GDPR Subject Access Requests (SAR)

European GDPR allows users to request a copy of all data retained about them. Since Monal does not retain any data and developer have no means to associate them with a particular individual, do not  submit any SAR for any apps. They will all be ignored.