Test your IQ, and tweak your brain with IQ Test: Cryptex Challenge on your Android device. This free app from Bubble Quiz games challenges players of all levels with clever math and logic puzzles. You can buy Hints and even Solutions when you're stuck, but it'll cost you some IQ points.Pros
Brain booster: IQ Test's puzzles and logic problems will challenge your reasoning skills and stimulate your cognitive powers. It's a workout for your brain.
Tricky, too: Just when you think you've got it down, IQ Test throws you a curve with an unexpectedly … Read more