I used to use Flight Aware (still have the paid sub for some reason--LOL)
I have an iPhone, so I've since purchased a lifetime sub for Flighty when they had a blackfriday/cybermonday deal last year.

Flight Radar is useful for some things the others don't, I think.

My interesting observations (since i have both Flight aware and Flighty) is one will report one thing and the other will report something slightly different (like Arrival time +4 minutes and one will be like arrival time +10 minutes) or something. Throw in the various airline app and nothing agrees.

I find Flighty useful for tracking itinerary changes, along with aircraft changes. I HAD an expert flyer sub, but with the REPEATED debacle last year with the database and faulty notifications I couldn't justify the price anymore when it would report erroneous things.

Flighty did save me with a HUGE AA itinerary change, (that I never got an email from AA about). 3 hour change, plus completely different routing, etc. Fortunately Flighty alerted me right away so I was able to get rebooked on the original first segment (we already had taken the last 2 First class seats, so fortunately didn't lose out on that).

If I had Android, I'd probably stick with Flight Aware and/or supplement with Flight Radar

IMO