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.
Drag ↕ on the sheet
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.