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: 7 years agoFirst 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.