The Magic Number is an app you can use to impress your friends! Simple!
Ask your friends to think of a number and keep it secret. Then let "The Magic Number" app do its job and you will instantly discover what number is in their mind.
Do the drama and pretend you are retrieving the number from their head and surprise them!!
The app is real and always works. There are no tricks.
(But let your friends believe youre reading their mind).