In that situation, you can use the app in standard mode with the phone fixed with some mount, OR stay HUD using our HUDWAY Glass accessory (learn more about it at hudwayglass.com). At night, in dusk, or in dull weather the reflection is normally well-discernible.
Launch the app and place the phone onto the dashboard close to the windshield (if you want to use it in Head-Up Display or HUD mode and see the reflection on the windshield), or into the mount (for standard use).
Perfectly works in the background — tracks your speed and gives sound alerts when you're exceeding, even when you're using some other app (for example, some navigation one).
When driving, make sure that your smartphone or tablet is well fixed in some mount or on some sticky pad, and doesn't prevent you from clearly seeing the road.
A remedy against the speeding tickets, the app keeps you aware on what speed limitation is set for the current road section and alerts when you're exceeding it.