I had the bug (CPU slowly increasing) with version -3 but not yet with -4.

With this last version I see that Mitak is disconnected in the morning, the wifi is on all the night long, though.

During the day, Mitakuuluu is always connected and automatically switch between mobile network and wifi.

Anyway, I like this version so much as the power consumption is VERY limited.
Congratulations!

Did I mention I like the special features Mitakuuluu has that are missing in the official app (send a pictures without loss of quality, etc)?