It's absolutely a useful app witch I was looking for that so long but it has a lot to improve. Specially it's user environment is so artificially and somehow unpleasant.
سلام نرم افزار خوبی است انشالله کامل تر شود
منصور حضرتی بسیار عالی
This application is really user friendly and informative
Nice Good job
Black History Inventors Quiz Deluxe includes games, stories, and draw your idea
Discover thousands of inventions and connect with the littleBits community
Get a new dimension relating to inventions, discoveries and technologies.