Modern Android versions (Android 12 and newer) have stricter Bluetooth permissions. If the app crashes or refuses to see your Vio, go to Settings > Apps > TomTom Vio > Permissions and manually grant "Nearby Devices" and "Location" permissions. For iOS Users (Sideloading via AltStore)
A lightweight, community-maintained Android/iOS app that connects to the factory-standard TomTom Vio hardware. Tomtom Vio Hack
By analyzing the data packets sent by the original app, independent developers have attempted to create open-source companion apps. Modern Android versions (Android 12 and newer) have
By editing config.txt , settings.dat , or tomtom.ini , you could enable: you could enable: