How to use the counter
Each click of + adds the step size to the count and each click of − subtracts it. The step starts at 1 but can be any positive number, such as 5 for counting in fives or 0.5 for half-units.
Keyboard shortcuts work anywhere on the page except while you are typing in a field: + or ↑ counts up and − or ↓ counts down. Undo reverses the last change, up to 100 steps back, and Reset returns the count to 0.
Privacy
The count lives only in this browser tab. It is not stored, synced or sent anywhere, so reloading or closing the page starts again at zero. Write down a count you need to keep.