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.
Dropbox - Online Sync and File Sharing
Day One - A simple journal application for the Mac, iPhone, and iPad. AboutTo learn more about Day One, see these two excellent reviews . PublishPublish is not available in Day One 2.
Google Drive - Access and sync your files anywhere
Journaly - The customisable journal app
Mega - Secure File Storage and collaboration
Journalistic - A simple, yet powerful micro journaling app