Ah I understand, yeah I like your idea, I can see maybe changing the scale and rotation to a different sort of slider, would involve a lot more code but I can see it being done. Idea being: When you slide the the slider to the left it rotates the emblem continuously to that direction, and depending on how far down the slider you rotate it tweaks the speed of the rotation. Whenever you let go it snaps to the center and ends the rotation. So for fine tuning you would hold the slider close to the middle and wait to let go. This would take quite a bit of testing and in the end it could end up not being as useful as it sounds when implemented, but I may play around with it.
I am currently looking into coding the application for the android OS, I am not sure how soon it will be done, but I am definitely looking in to it :)