Windows Phone 8 applications run on Windows Phone 8.1

Question

If I publish the application in a store designed for Windows Phone 8, will Windows Phone 8.1 users be able to install it on their devices?

Answer 1

Yes, Windows Phone 8.1 users can use Windows Phone 8.0 applications. Because he has Backward compatibility. Applications created to work with Windows Phone 8 continue to function on Windows Phone 8.1 devices without republishing.