At the very beginning, CanZE was exclusively an Android app that was build and still is maintained by Bob Fisch and Jeroen Meijer. Later on, Frédéric Richard decided to make a port to ISO. Fur further details, make your choice here:
Is it possible to capture raw can data with this app ie to log or something ? i am interested in capturing charge data
No, the app only can log “known” data.
For what you want to do, you will need to connect your dongle to a more general terminal app and read out “all data”.