I just discovered F-Droid last night, and I love it. I love dabbling in open-source software, and I love people who are willing to use it to make the lives of their communities better.
I have a question about the completely-free nature of F-Droid. I bought my favorite calendar app, Simple Calendar Pro, on the Google Play Store a while back. Through the F-Droid client, the same app – the Pro version – is available for free. Is this a decision that the developer of the app made, i.e., the developer knows that’s it’s being hosted for free on F-Droid? I just want to make sure that I’m not ripping anyone off getting something for free here when the same app is a paid app on the Google Play Store (and I have absolutely no problem donating for free apps that I use on a daily basis).
Thank you for helping me understand the F-Droid mission, and please excuse my new-user ignorance.