This addictive, number-crunching math game will leave you hooked for hours. Your goal is to get to a target number using only the numbers on a calculator and your four friends: +, —, x and ÷.

Need to get to 39? Try 4 x 9 + 3. How about 243? That would be 8 x 8 x 4 — 7 — 6. It might look easy at first, but the numbers get bigger and you only have 10 moves before your calculator will konk out. Better add fast!

Start out with the beginner levels in Adventure mode before adding a timed challenge in Countdown mode. And if you ever just want to practice, four difficulty levels in Freestyle are always there waiting for you.

Calcuzoo is optimized for iOS 10 and is available in English, French, Spanish, Portuguese, Dutch, German, Italian, Russian, Japanese, Korean and Chinese (Simplified and Traditional).