Is PandwaRF capable of opening gates without keys?

PandwaRF Rogue Pro can do that, assuming you have captured a RF frame previously, and submitted it to Kaiju for analysis (PandwaRF <-> Kaiju communication is handled by the app).

If analysis is succesful, Kaiju will generate new rolling codes that will open the gate.

Warning: You should only do this on your own gate opener in case you have lost the transmitter for example.