Sheet #18 · 18 September 2026
Can you really see how big things are?
One reference drawn to scale, one object to size by eye, no numbers until you lock it in.
Three moves
- 01
Compare
The hatched reference is drawn to the right scale.
- 02
Size
Drag up or down to grow or shrink the orange object.
- 03
Lock in
The true size appears. Up to 100 points per round.
Still want to measure?
Random pairs, no limit, to sharpen your eye between sheets.
Start practisingFAQ
Do I need an account?
No. Your progress, streak and stats stay on your device.
Why no numbers during a round?
So your eye does the comparing, not arithmetic. Values appear as soon as you lock in.
Is the game the same for everyone?
Yes: one sheet a day, identical for all, renewed at midnight Paris time.
How do I challenge a friend?
At the end of a game, create a challenge link. Your friend plays the same sheet and sees your estimates after each round.
What if I want to keep playing?
Practice mode offers random pairs with no limit, without touching your streak.
Does the game collect my data?
No. There is no account, no database and nothing kept on the server: your progress stays in your browser.
Are there ads?
Not for now. If ads ever appear, a consent window will come first, and they will never sit next to the game's buttons.