For hosting common files it's ok. Also it is on Android too do, great to transfer files between your Windows and your phone. But if you want better security you have to subscribe a monthly offer.
Layout by Instagram - Combine multiple photos into a single image
Dropbox - Online Sync and File Sharing
Vine Camera - Vine Camera is one of the best video editing application that allows you to make 6-second looping videos and post it directly to Twitter, Facebook, Instagram and all the other social platforms.
Google Drive - Access and sync your files anywhere
Live GIF - Convert live photos to GIF
Mega - Secure File Storage and collaboration