Question about Cartrend Obd Ii Wifi

To answer my own question.
With normal apps, the readout of sensors and vehicle information works of course, because, as DeevooX and olivier.graber have correctly mentioned, OBD II is universal.
However, the Leafspy app does not support all Wifi OBD II scanners, hence the question.
However, the Cartrend OBD II Wifi works with Leafspy after setup without any problems (bought and tested in the meantime)

This should work without a problem for engine faults because OBD is universal. For other faults, unless I'm mistaken, it's proprietary to the make.

Should actually work as OBD II is universal