Earlier this year, the Dropbox Android app ran by the 500 million installs milestone on Google Play. The problem with that metric is that it tracks the number of times the app has been downloaded from the Play Store, which includes updates to pre-installed versions. That makes this a very unspecific marker of how many people actually use Dropbox on Android.

We still don't know the answer to that question, but today Dropbox is happy to announce the number of people using the service overall. Over 500 million people have signed up since the file hosting company started syncing the contents of desktop folders in 2008.

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