Click Counter
Tap the button to count. Create as many counters as you need, rename each one and follow the total — all in your browser, nothing to install.
The count is not saved: closing or reloading the page sets everything back to zero.
Not sure? Turn your internet off and try — it still works.
How it works
A tally counter solves the problem of counting things that happen one at a time and cannot be recounted afterwards: people coming into an event, reps in a workout, items in a stock count, birds on a field survey. The advantage over counting in your head is not losing the number when you get interrupted; the advantage over paper is being able to fix a mistake without crossing anything out. Here each counter is independent and has its own name, so you can count separate categories in parallel — adults and children, say — and still see the combined total.