Excellent replacement for Google Maps etc, I used to use it along side other apps until I was happy with it's accuracy, but aside from once when it lost data connextion for no apparent reason it's been perfect, and the speed trap warning has definetly saved me at least 3 points and a £50 fine already.

Best of all it is free from GAPPS and Googles intrusive APIs, so you can install it on roms such as LineageOS with no issues.