Zender is the top-ranked free file sharing app that makes it easy to transfer files between Android devices. 

You can now share all types of files, including music, videos, apps, documents, and even folders with your friends and family, all without having to go through a complicated process.

All you have to do is install the app and select the files you want to share. The best part is that you can do it without using any data. 

Once you're done, just press the "Send" button and you're done. There is no need to connect to a network or go through the complicated process of sending an email.