It took me a little time to get used to the pie menu concept. I like some things about ejpi, but my biggest dislikes is that it sometimes takes longer than I would like to just press the buttons due to the tap-and-hold model. Particularly needing to tap and hold for - + * / functionality. My controversial suggestion: keep the pie menu, but move from tap-and-hold to just tap. That means that, for example, the 5 button can't be dual-function (tap for 5, tap-and-hold for - + * /) -- you would have to move - + * / to its own button. There might be other buttons you'd need to re-arrange. However, I think the end result would be that you could make more use of the pie menus & save some screen space. I also think eliminating tap-and-hold would make the program more intuitive, but I realize that can be subjective. Thanks for your cool and useful program!