Could use a few enhancements

1) No paper tape. A paper tape would really be nice.

2) It comes up REALLY HUGE on the display. While you can resize it, you can’t really make it a reasonably small size.

3) It would be better if it remembered where on the screen (and the size) from the last time that it ran. Now, every time you start the calculator it covers up your work by displaying a ginormous calculator right smack on top of your work in the center of the screen.

Otherwise, it is really well done and is quite nice to use. With a bit of polish it would be up to Apple/Mac standards. Right now it feels a bit unpolished compared to an Apple app.

Gentle Explorer about 10bii Financial Calculator