[dawidpotocki]

Just a small note about it: it's not open-source and their excuse is… pretty poor. They don't give you modification rights at all, so you can't even legally contribute to the project.

The platform support is implemented inside "plugins" and they are under AGPL-3.0, so… can you even distribute the application, considering that the licence of the application and plugins seem to be incompatible at my non-lawyer first glance?

Their excuse for their application licence so that they can legally prevent people from uploading ad-infested versions in Google Play and similar platforms under their name… but that's why MPL 2.0 and Apache 2.0 have trademark exclusion clauses.