Paid apps are sold by different providers (Apple and Google). These providers don’t share license data. Hence, it is impossible to move licenses from one platform to another. For this reason, the app has to be purchased again for the new operating system when switching from one platform to another. Chats and media files cannot be moved to another OS.
Use Threema Safe to transfer your most important Threema data to the new OS. Threema Safe backups don’t include chats, media files, and profile pictures of contacts and groups.
