When I first got my boaphile tanks, I used SensorPush Sensors and the app for the phone with them. They worked great. The batteries last two years and by the time the batteries died, I didn't replace them. I know my tanks well and I rely on an IR temp gun for temps and a basic humidity gauge for humidity when needed.
I swear by my IR temp gun(s) and remember, ground temp is where it's at. If I want to know ambient temp, I hit the back wall in the middle of the tank or a hide, etc.