Challenging
I was a little slow to figure out this app but I find it fun and difficult at the same time.
NsAlm
It is good
Great Fun!
5 stars
Great
Great!
Brain tests
It's fun
Fun
Lots of fun
R
Great app
Entertaining as algebra!
Good app, shame about the adverts but the developers have got to earn their money somehow! Worth a download if brain teasers are your thing.
I am smart, you know
Finally, an app with difficult quizzes on the higher levels!
Amazing
Great brain challenger. Very interesting IQ questions
