The Feep app is no more and has not been in the Android Market for a long time. This type of app became impossible after bad folks started exploiting Facebook Permissions, such as with the Cambridge Analytica data scandal.
Unfortunately, because Facebook got burned so badly by these exploits they completely reversed course and heavily locked down the platform. I hope that someday Facebook will create a trusted partner program, allowing apps like Feep to be verified as trusted and access the same information as the official Facebook client. If that happens I will polish up and reintroduce Feep to the market!