4/5 rating based on 50 reviews. Read all reviews for NineGaps for iPhone.
NineGaps is paid iOS app published by Quadion Technologies
Tracyu
Great game to pick up and play that doesn't take long and is fun! Keeps your mind working and sharp!
Medicmama5
Great for all ages. My kids can beat me!! Games are quick so fills up waiting times nicely.
Stangster1
If you're pretty good at math, this is a game that's beautifully challenging and beautiful to look at as well. Perfection.