this is the ad-free version, which is available with the exact same (if I’m correct) features on F-Droid for free, along with the source code on GitHub.

the versions on the Play Store (paid version and free version with ads) likely just help pay the developer for their work

and as others have said already, free software is free as in freedom, not free beer.

ah, I see. thanks

doesn’t it allow compilation and non-commercial distribution? I don’t agree with the license (not free or open source), but I’m genuinely curious on what specifically doesn’t allow source code modification.