Bests & Worsts Reviews from Amazon

This is a VERY nice implementation of a plain 'desk calculator'. Besides the 4 basic operations it comes with the 'percent' key, the traditional calculator memory keys, and a backspace function, all on a nice brushed metal finish that looks good on the Kindle Fire screen. I am not sure what the 'plus' in the product's name stands for... it could be the backspace or maybe it displaying the last operation right underneath the answer but that's not important. It's a great, plain-vanilla calculator that works well and looks good on the Fire. And, yes, like many 'free' products it does come with ads but they are on a small, narrow band at the top of the screen and easy to ignore.