I would like to not have the need to synchronise my DB each time I change something on one of my devices.
For example : I can mount a virtual drive on my desktop with Dropbox (I can link my database on my dropbox drive), but DVD profiler for mobile devices doesn't have the option to link a virtual space (googledoc, dropbox, skydrive, etc.).
I bought DVD profiler for Windows and for iPad.
The application "1Password" is a very good example : https://agilebits.com/onepassword