Calculator app

I use the programmer mode of the calculator a lot, but today my calculator seems stuck in scientific graphing mode. The menu to change modes is gone, swiping does nothing, and restarting it just brings up the grid with the previous calculations. I am unable to delete the app's data/cache to reset it. That option is grayed out.

Earlier today I was using it fine, but I don't know how it switched to graphing mode nor do I know how to change modes anymore. The entire layout seems to have changed, its much simpler. I've tried swiping, tapping and holding, and trying to bring up a context menu. No luck.