I have no issue with this, I personally wouldn’t use it but I get that they need to make money (which is why i have a recurrent donation every month).

If this helps them to do that, then so be it

It’s a program that uses an SDR to pick up the signals broadcasted by planes (ADS-B) containing their flight information. Then the data gets uploaded to an aggregator (FR24, Flight Aware, ADS-B Exchange) that gives a global view of all planes in the sky.

You can use the aggregators for free without uploading, but you get some perks for being a contributor. I just do it because it’s cool and I use the platforms for getting info on flights I’m taking (you can tell if your flight is gonna be delayed if the plane is delayed elsewhere for example).

I took an old pi and threw a flight tracker on there. Now i have premium accounts on FR24, FlightAware, and ADS-B Exchange.

I have a few other pis which run other stuff though, my favorite thing to do is install nginx proxy manager and tailscale, then use it as an entry point to my network (this was born out of my main server being a bit unstable, which i have since fixed but kept NPM off of it because the pi is pretty much set and forget)