A: You can, but it will contain encrypted gibberish. The data is not human-readable. Do not edit the file—it will break the signature and invalidate the license.

Within minutes of payment (via PayPal or FastSpring), you receive:

Do not lose this file. The developer does not maintain a cloud account system – you are responsible for storing your R2LIC.


Rainlendar is a lightweight, customizable desktop calendar application available for Windows, macOS, and Linux. It comes in two main editions:


A: Yes. Simply copy the .r2lic file from your old PC's Rainlendar folder to the new one. If you lost the file, download it again from your email or the Rainlendar customer portal.