I Know Colors app for iPhone and iPad

I KNOW COLORS is simple but challenging brain puzzle game based on Stroop Effect.
Stroop effect is a demonstration of interference in the reaction time of a task. When the name of a color (e.g., "blue," "green," or "red") is printed in a color not denoted by the name (e.g., the word "red" printed in blue ink instead of red ink), naming the color of the word takes longer and is more prone to errors than when the color of the ink matches the name of the color.
In the game, player should clear 20 words in 30 seconds. If you think 4 color mode is too easy for you, try more challenging 6 color mode.
Features
- Two Game Mode
- Achievement
- Leaderboard
- Simple yet stunning graphic