Very nice, but one thing would help.

Its big enough to see and click the right buttons, which is much better than the dinky version that comes bundled with the Mac OS!

Sure wish the "c" key on the computer keyboard activated the "C" key on the calculator keyboard, as it does with the dinky Mac OS version, instead of the "MC" key. Also would be preferable if the "m" key on the computer keyboard activated the "MR" key on the calculator keyboard, instead of the "M-" key.

Alabostonian about Full Screen Calculator