Android 6.0.1 kept turning my WiFi off. :-(

This app can be configured to keep WiFi turned off turned on or leave it alone. Likewise with Bluetooth.

When first installed it keeps WiFi on but doesn't touch Bluetooth.

Important: this app may turn your Bluetooth on or off without prompting you for confirmation at the time.

NOTE: This app is no longer maintained. If it works for you that's great. If not I suggest uninstalling. It shouldn't take long to find out whether it works for your phone & OS version. As mentioned in the reviews it doesn't work on all phones.