You forget one thing. RWGPS is (I think) one of the few training apps that can record and display all the data on the free tier. And it doesn't nag you every 5 minutes to upgrade to Pro or whatever. I really appreciate that and try to buy a one-month subscription once per year when I can afford it.

I have also worked with gps data and run my own map server (for a small country) so I know it costs money, time and effort. And thanks for the breakdown!