Let's Scale: Size It Up

How many times taller is a giraffe than a person? What does Jupiter look like next to Earth? Let's Scale is a size comparison quiz: you size up one silhouette beside another and instantly see how close you got.

Move the slider until the size looks right. Then check your guess against the real thing: accuracy earns points. Many objects come with a quick fact. Errors are measured as ratios: being off by a factor of two counts the same for a mouse as for a whale.

It's a trivia game, an estimation game and a geography quiz in one: short rounds that train your sense of scale.

WORLDS

• Animals: an animal quiz with insects, birds, savanna and ocean wildlife, dinosaurs

• Countries & islands: a countries quiz on the world map, compare their area with a country you know

• Space: planets of the solar system, moons and the Sun

• Transport: from a scooter to an airliner

• Architecture: famous buildings beside a bus

• Mixed levels: objects from different worlds side by side

• Earn up to three stars per level. Complete a world to unlock free play

DAILY CHALLENGE

• A daily puzzle: five new pairs every day, the same for everyone

• From day two of your streak, get +10 % challenge points per day, up to +100 %

• A weekly freeze saves your streak if you miss a day

• Catch up on missed days in the archive covering the last seven days

• The top three in the daily and weekly results earn bonus points

MINI-GAMES

• Bigger or smaller: a higher or lower game. 60 seconds to tap the bigger one, until your first mistake

• Sort by size: arrange four silhouettes from smallest to largest

• Impostor: spot the wrong size among four silhouettes

• Duel: play five pairs and send a friend the code. They get the same pairs. The winner takes both players' points

COLLECTION AND TITLES

• Meet an object on three different levels to unlock its card

• Your accuracy determines the card's metal: copper, silver, gold or platinum

• Your title rises with your average level-record percentage, from Newcomer to The Ruler

LEADERBOARDS

• Compare your points with players worldwide or in your country

• Set a nickname and country in your profile, or stay as “Player N”

MORE

• Metric or imperial units

• 10 languages: English, Русский, Deutsch, Español, Français, Italiano, Polski, Português, Українська, עברית

• Sign in with Google to keep your progress on another phone. You can also play without an account

• Delete your account and data in your profile at any time

If you like trivia, geography quizzes, higher or lower games or just wondering how big things really are, Let's Scale is for you.

Free to play, with ads. The one-time “Remove ads” purchase removes ads between levels. Rewarded videos remain optional. The one-time “Support the developer” purchase gives you a crown on the home screen and leaderboards as a thank-you.

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