Countdown Counter
Starts at 50 and counts down. Change the starting number under Settings — it stops at zero rather than going negative.
Other counters
Sometimes what matters is what's left, not what's done. Tickets remaining, places left on a course, darts scores, stock going out, portions in a batch. In all of those the useful number counts down, and forcing yourself to subtract from a rising total is just extra work and an extra chance to get it wrong.
Setting the starting number
The maximum under Settings is the starting point — set it to your total and the counter begins there. Each tap takes one off, or whatever the step is set to.
It stops at zero by default rather than going negative, which is usually right: you can't hand out a ticket you don't have. Turn that off under Settings if you genuinely need to go below zero, such as tracking an overdraft or a deficit.
Darts and games that count down
Darts is the obvious case — start at 501 and subtract each score. Set the maximum to 501 and the step to whatever you're scoring, or leave the step at one and tap out the score. The number on screen is then the checkout figure, which is the number a player actually wants to see.
A few card games work the same way, as does any game played down to zero.
Countdown counter or countdown timer?
These are different things, and it's worth being clear about which you need. A countdown timer counts down in seconds on its own — you start it and it runs. This counts down when you tell it to, once per click, and does nothing in between.
If you want something that decreases with time, you want a timer. If you want something that decreases with events, this is it.
Questions people ask
Can it go below zero?
Not by default — it stops at zero. Turn off 'stop at zero' under Settings if you need negatives.
How do I change the starting number?
Set the maximum under Settings; that's where the countdown begins. Reset returns it to that figure.
Is this a timer?
No. It counts down one click at a time rather than on its own — for a time-based countdown you want a countdown timer instead.