Calculator Max

This is more than just your standard calculator. There are 4 modes to choose from. The one I find most useful is the Tape Mode. It is great for itemized calculations. There are just a couple of small issues that prevent me from giving it a perfect 5-star rating. The first is that while having a Scientific Mode is great, having a Scientific Mode with a graphing screen would have made any other calculator app obsolete. Secondly, there is no backspace key. This would make it so much easier to fix the most common typos. Instead, you must clear and re-enter the entry altogether. Not a huge problem, but just a bit inconvenient.