I am extremely impressed, I have auto-update turned off and was updating some apps, and I thought, I can update this, how badly could someone mess up a calculator? Well, they've really outdone themselves here, the app is so bad now that I'm planning on getting a 3rd party one just to undo this last update. The buttons are terrible now, there is no preview for the equation you're writing, and overall it feels like I'm using a toy made for five-year-olds. The old version was not like this.