The frozen receipt: every amount a key, spent ones ticked.
Point it at a receipt
Point the camera at a receipt and every amount on it becomes a key. Press the ones you want and they land on the stack.
RPN Deck is a calculator for iPhone. Type the numbers, press the amounts straight off a scanned receipt, or just say them — every one lands on a stack where nothing is locked in.
Tap a row to correct it in place. Swipe it away to delete it. Swipe the other way to pin it (a pinned row survives the next clear). Hold and drag to reorder. UNDO steps back through anything you did.
The frozen receipt: every amount a key, spent ones ticked.
Point the camera at a receipt and every amount on it becomes a key. Press the ones you want and they land on the stack.
Speak the numbers and they land on the stack as they settle, one undo each. Misheard? Tap it and fix it.
“twelve ninety-nine, three fifty, seven forty-five…”
Rows landing on the stack as each number settles.
Every keystroke, printed like a receipt: each entry, each operation, each total. Share any list as an image, as text, or as a PDF.
Numbers first, operator last. No parentheses, no equals key, no expression to hold in your head. The stack is unlimited, every level stays visible, and TOTAL folds the whole thing into one number in a single press.
The calculator is free. €2.99, once, unlocks the Full Deck: the tape, and the two fastest ways to fill it — scan and voice. Family Sharing included.
iPhone, portrait, English. Numbers follow your device's own format.