Higher or Lower
Two quantities. Which is bigger?
Two questions appear side by side. Tap the one with the larger answer. It starts easy, then the gaps shrink. One mistake ends the run.
A higher or lower game about real quantities
Two estimation questions appear side by side. You do not need the numbers, only to know which answer is larger. Are there more heartbeats in a lifetime or more stars visible to the naked eye? Tap, and both values are revealed.
The first rounds compare quantities that are very far apart. As your streak grows, the two answers get closer, down to less than one order of magnitude. One wrong pick ends the run.
Why comparing is good training
Ranking two quantities forces you to place both on the same mental scale, which is exactly what order of magnitude intuition is. It is also the fastest mode to play: no keyboard, one tap per round.
FAQ
What happens when two answers use different units?
You compare the raw numbers, whatever the unit. The point is the size of the number: 40,000 km is compared to 86,400 seconds as 40,000 against 86,400.
Is my best streak saved?
Yes, in your browser. It appears on this page and on the stats page.