[rehashed]

Does this require that my apps users each have a dropbox account?

[nns]

Yes! From their "Getting Started" section - " you'll need to add snippets of code in the right places to successfully link a user's Dropbox account to your app"

[thomseddon]

Looks like it: https://www.dropbox.com/developers/sync/docs/android#com.dro...

[kayoone]

yep, so you shouldnt rely on it but make it a feature of your app to sync the data to dropbox.