Ish Challenge

A new challenge every day. Estimate real-world numbers, learn how close you got, and climb the leaderboard against friends. How good is your gut?

How many online courses do UK 25–34s start each year? You probably don't know exactly — but you can get close. That's Ish.

Ish is a daily numbers game about smart estimation. Every question asks you to guess a real-world quantity. You won't know the exact answer — nobody does off the top of their head — but with a bit of reasoning you can get surprisingly close. The nearer your guess, the higher your score.

How it works • A fresh challenge every day, plus the big weekly quiz — 10 questions, one hour, every Friday • Enter your best estimate and (optionally) your assumptions • Reveal the real answer, your accuracy score out of 100, and the reasoning behind it • Learn something new every single day

Play with friends • Climb the global leaderboard, ranked on your accuracy • Create private leagues and invite friends with a code • Build a streak and keep it alive

Why you'll love it • Quick to play, hard to master • Actually teaches you how the world adds up • No trivia memorisation — just clever thinking

Think you've got a feel for the numbers? Prove it. Download Ish and start your streak today.