If your GPS takes forever to find you, or reports an inaccurate location, it may be due to a corrupted satellite cache. This app will clear that cache, and download a new copy from the internet. Your phone will temporarily rely on cell towers for location. Once GPS satellites are acquired again the accuracy should be much improved (normally this takes a couple minutes).

Optional Hands-Free mode: you can set the app to reset the GPS automatically when you launch it, which you can do by saying "OK google launch GPS Reset". So if your GPS goes haywire while driving you can fix it without touching your phone! I have used it successfully with my Samsung Galaxy S7 for exactly this problem.

Note if your GPS already shows your location accurate to within 50 feet or better this app won't help!