Neither one, not a whole ...

The main criticism: The FW is very immature. This is primarily due but because this FW is intended for a variety of camera models and depending on the model, the packets are modified. It runs a Linux (buildroot).
However, what is much worse: It runs an open Wi-Fi and the Telnet port is also open. You can activate the Wlans sometimes (Timing important) stop by pressing the record button just after the turning. The flashing Wifi icon disappears. I use the camera also as Carcam and am relatively happy. Who knows, can Telnet to access the camera and study the FW) Unfortunately Python was not integrated in the FW, which does not make an administration of the current Cherokee web server first possible.
I personally do not like that the camera is very warm, because the battery in the small housing all heats and thus in the dark a disturbing purplish on the picture conjures up because the heat is heating up the image sensor. Operation via app is also sometimes good, sometimes bad. The Unieye app is just bad!
My opinion: As Carcam ok, and in between times a video for fun but no longer. Had I known that there are cheaper identical models, I would not put on Rollei!