Good!

Best satellite tracker by a huge margin!
But it has serious shortcomings and limitations in its notification controls (which for me, is over 90% of the apps role - and with most others too, Ill bet).
It simply needs more robust and configurable alerts or its usefulness is limited even with a good and comprehensive data base.
For example, the ability of a simple and general alert when the ISS is within visual range of a given location - each time - anytime. Not a only for one specific path or fly-by, once. Also, it would be nice if a category of Iridium flares be calculated and added, like other apps have done (and again, both specific and general notifications) with great results.

LosAngeles90631 about Satellite Safari