Numberio is a math puzzle game available on the iPhone platform. The game challenges players to use four numbers and basic math operators to reach a specific target number, utilizing each number exactly once.

In Numberio, players can enjoy different modes including Ranked Mode where their rating increases with correct solutions and decreases with skips, leading to advancements in ranks. Additionally, players can opt for Casual Mode with options like Normal, Hard, or Expert puzzles. A new addition is the Timed Mode, where players have two minutes to solve as many problems as possible, earning points for each solved puzzle and aiming for high scores.