Definitely 5 stars!

Firstly, Im amazed by speedometer accuracy when there is full gps signal.

Secondly, its very convenient to set a Picker speed limit when you drive.

Thirdly, alert system works like cars alert system: whenever your speed is
above the limit - its turned on, when the speed is decreased - its turned
off automatically. Alert system requires no intervention and never hinders driving.

Definitely 5 stars!

by Ro-bert about Speedometer s54 (Speed Limit Alert System)