Do not download if you value your battery. This app drained 45% of my battery just from running in the background. That is without the Pokémon go plus accessory connected!
This game was amazing at the start. The hunt for Pokémon was engaging and fun. It actually encouraged exploring. With the new "tracker" it just tells you where Pokémon are. There is no fun in that. Also if you live near pokestops you dont get to see whats actually nearby.
Long story short the new "nearby" list shows you Pokémon locations with no thrill of the hunt and force you to drive there if you want the Pokémon at all.
Jofad4 about Pokémon GO, v1.31.0