Share it app easy to share large files like photo, videos, movies and receive same from other end. And one more thing, you can share your installed apps from your device to another device, if your reqired apps have another device, no need to expense of mobile data, just getting to your device using this app.
Shareit is easy to use just install from play store and open the app, automatic getting username just using your Google account. Then you have to use for sharing by clicking send / receive button in this app.
One thing is there, some antivirus / security softwares shows ’you have risk in shareit app’ otherwise it’s a good.