Adding Calculator support

Adding Calculator adds up a column of numbers the way it’s done on paper, so you can see every figure you put in and check the sum against what’s in front of you.

Put a number in: type it, then press +. It joins the column above the rule and the sum under the rule keeps up.

Subtract a number: ± swaps the sign of what you’re typing; the − shows in the margin, and + then puts the number in as a negative.

Fix a mistake: ⌫ takes back a digit while typing. C takes the last line out of the column. AC clears everything.

The same number again: press + with nothing typed and the last line goes in again. ± with nothing typed flips the last line’s sign.

Split the sum: type how many ways, then ÷; one share shows under the sum. ÷ with nothing typed takes the split off. Shares are rounded up to the cent, so they always cover the sum.

Copy: the copy key puts the share on the clipboard while split, otherwise the sum, as plain digits ready to paste.

When the column is longer than the screen it scrolls, and the edge with more lines beyond it fades. On an unfolded phone the column sits on the left and the keypad on the right.

The column is saved as you go and stays on your phone.

Requires an iPhone with iOS 26 or later.

Contact

Questions or problems: rafal@radziszewski.software