Parental Control - Time Limit

Hi Dribbblers,
I am new to the Principle App and so every now and then I try to play with it to understand it's scope. Recently I thought of doing a Radial Slider (I don't know whether I named it right :/ ) interaction in Principle. After exploring a bit I realized there's no direct way of doing so. After couple of try I find out a way with the help of nested layer tricks and drivers. But it's still not that smooth and I have only managed to make it functional for half the circle. If anyone of you find out a better technique of doing this, please share.
I was also working on a phone manager app which allow parental control over phone. So, I combined my principle app exploration with my WIP App design. The result is above. Check out the better pixels on attachment. Feel free to share your thoughts on this.
If you have any query or works available for me, feel free to contact at mdshamsc@gmail.com