I use YNAB to track my budget and spending, but the YNAB Android app is clunky when it comes to manually adding transactions on the go (like a cash transaction). Rather than relying on saved receipts (since you sometimes don't get one or lose them), I'd rather be able to start a Wear app and easily log the cash amount spent via a calculator interface so I can add it to YNAB on the computer later. Some kind of text note or GPS reference might be handy too, but the main thing is just tracking the numbers.

Any ideas?