Support

Questions, bug reports, and feature requests all go to one place — and a person reads every one.

Expect a reply within a few days. For a bug, it helps enormously to include your iPhone model, your iOS version, and the sequence of keys that produced the problem.

What is reverse Polish notation?

In RPN you enter the numbers first and the operation last. Instead of 12 × 5 = you press 12 ↵ 5 ×. Numbers pile up on a stack, and each operation consumes the numbers it needs and leaves the result on top.

It takes about ten minutes to stop thinking about it, and then it is faster than the alternative — there are no parentheses to balance and no equals key to hunt for, and every intermediate result stays visible instead of vanishing.

Is my data safe?

Yes. RPN Deck collects nothing and makes no network requests. See the privacy policy for the full detail.

Requesting a feature

Please do. RPN Deck aims to stay small and quiet rather than grow every function imaginable, so not every request will land — but knowing what people actually reach for is what shapes the next version.