oSum app for iPhone and iPad

4.1 ( 3601 ratings )

Games Education Puzzle
Developer: Opticom Engineering B.V.

Free

Current version: 1.4, last update: 8 years ago
First release : 17 Oct 2011
App size: 452.74 Kb

oSum is a puzzle game with multiple levels for all ages. Calculate sums by placing the correct signs.