Even though cloud-based productivity suites like Google Docs are
incredibly popular, many people (and large corporations) still
operate on good ol’ Microsoft Office. The Word text processor was
Microsoft’s first Android app to pass 500 million installs on the
Play Store, and a little over a year later, it has now passed the
1 billion mark.
As with most apps that reach this many installations, the count
isn’t made up entirely of downloads from the Play Store. Microsoft
has agreements with Samsung and other manufacturers to pre-install
Word (and several other apps) on phones and tablets, so there’s a
good chance many of those billion installations come from devices
where the app has never been opened.
The Office apps are very popular on iOS too, of course. It makes sense that Microsoft put so much effort into trying get Windows Phone off the ground — they knew that mobile was going to be a huge part of the Office franchise. Turns out it just wasn’t on their own platform.