Hey! The Purion does not connect to either the Bosch eBike Connect app nor the Cobi.bike app.
The Kiox, which is available on many bikes right now and will be available to the aftermarket shortly pairs with the Bosch eBike Connect App.
The Smartphone Hub will connect up to the Cobi.bike app. The SPH is also available on new bikes right now and shortly coming to the aftermarket.
Both of the above displays will be a compatible upgrade to nearly all Bosch eBike Systems currently in the market.