■ How Stuff Works Pro is an Feature Rich Version of Popular How Stuff Works App. It Contains 500+ Concepts related to How Stuff Works.★
■ Currently Pro Version Contains Ad Free Feature & Save as PDF Option, Plus the Full Contents from How Stuff Works App [ https://play.google.com/store/apps/details?id=in.intelitech.howstuffworks ]★
■ In Future we intend to implement more features to the App.★