In the German DEB forum a user found a way to use many experimental functions in the TomTom Labs menu.
It works with version NDS 3.4.21-latam, but supposedly it should also work with the Playstore version.
1. Open the TomTom Labs menu
2. Tap the font "TomTom Labs" at the top 20 times
After that you will see a new menu....."The Danger Zone"
There are functions hidden there that are known from the mod versions.
To turn off the function you have to tap the font “TomTom Labs” 20 times again.
Have fun discovering....