I have just submitted AepCalc 2.1 to the Mac AppStore, which includes some smaller requests collected over the last few months:
- Added a display option that will disable shadowing on text. Check for 'Shadows' on the Modes menu.
- Added UNDO; hit Command+Z (⌘Z) to invoke.
- When not entering a number, the backspace key will now drop off the bottom value of the stack.