Not Worth Enough to Pay

If youre thinking about spending real money to remove the ads, do yourself a favor and read some reviews by other people who paid for ad-free on the paid version of the app. They explain how the paid version removes the ad box at the bottom of the screen when using the calculator but doesnt remove that "one" pop-up ad that pops up every time you open the app. It advertises "recommended" apps, meaning other apps by this developer. (To the developer(s): I guess $3 isnt good enough, is it?)

Aside from that, its an easy to use calculator (when not connected to the internet), and I love the paper skin, but there are many other calculator apps that have way more skins than this and that definitely give you your moneys worth.

Ottoauto about Calculator Pro+ for iPad, v5.1