Windows
Right-click on the file in the Downloads folder and select ‘Run as administrator’ from the context menu.
macOS
Drag jRep.app from the unzipped folder in your Downloads folder to the Applications folder and open it twice in quick succession (!) via the context menu.
Linux
Unzip the file to a location of your choice. In the unzipped folder, set jRep.jar as an executable file and then double-click it.
The installation guide for the Linux version is currently being updated and will be available for download shortly.
Android
You can also use the modules you have purchased on your Android phone or tablet.
https://play.google.com/store/apps/details?id=ch.steph.jrep&hl=en
iOS
You can also use the modules you have purchased on your iPhone or iPad.
