Is there a native way to turn the bluetooth off every day between certain hours?
I now use ITTT, but couldn't find a native way.
I found this app that seems to do what you need. It's description:
Bluetooth Scheduler offers you the posibility to turn On and turn Off bluetooth module in different moments of the day, and/or through the week with day independent configurations, making you to save battery charge.
There is 2 different modes (1 active each time):
Simple mode: Lets you make schedules independent of the day, that should apply everyday.
Weekly mode: Lets you easily configure schedules for each day of the week.
I didn't find a way to do it without an app (a native way). However, if you didn't like this app and you are a developer, you can check the functionalities available and build yourself your app for that.