To Safeguard My Concept or the Application

Hello!

I have develop a an application for mobile user from conceptual stage. I am very small girl. i am new in business. i am starting a startup company now. My Main worry is how do i safeguard my concept or the application as this can be easily adapted or expolited by other company who are into business. or where do i find more information about this

Note : it is a new application, New concept i want to safeguarding my idea,Concept or Application

Also i need your best Wishes!

Regards
Arati