With which app is my eBike display compatible?

A list of all suitable products is available here.

eBike Flow app
 
The eBike Flow app is the control centre for your eBike with the smart system and connects directly to the LED Remote, the Purion 200, the Kiox 400C or the System Controller. The app allows you to adapt the eBike, to expand it and to keep it up-to-date by easily downloading new features and services, which are installed using Bluetooth. In conjunction with the SmartphoneGrip you can use your smartphone as a display on the handlebar.

eBike Connect
 
The eBike Connect app lets you connect your Bosch Kiox or Nyon display to your phone via Bluetooth. You can use the smartphone app to change the settings of your eBike and transfer your planned routes to your display in seconds.
 
COBI.Bike
 
This app only works in combination with the Bosch SmartphoneHub and COBI.Bike hardware (for eBikes and conventional bikes). The COBI.Bike app turns your phone into a handlebar-mounted eBike display. Control your audio apps directly from the handlebar, get up-to-date weather information while on the move or use additional features for greater safety while eBiking.