Mildly annoying, not a showstopper though.
It gives what appear to be accurate temp readings (judging from how perfectly the meat came out) and shows the temps for the, up to, 4 probes inserted.
There might be an Android system setting I can change to prevent the app from being shut down, potentially due to power saving configuration.
Still, I am happy with the device. Just letting others know of the real life good and bad points.