How to get an extra 10GB of Google Drive space for free

Google gives all comers 15 gigabytes' worth of free storage across Gmail, Google Drive, and Google Plus Photos. Not a bad chunk of space just for having a heartbeat.

Of course, more is always better, especially when you don't have to pay for it. And Google is now offering exactly that, though there are a couple small catches.

From now through Sept. 26, you have the opportunity to score an extra 10GB of Google Drive space, no extra charge.

The requirement: Install the newQuickoffice app for Android or iOS--which, incidentally, is also now free. Then sign into your Google account via that app. Presto! You get another 10GB of gratis storage.

What's the catch? First, it won't appear right away; Google says to look for the space increase "in the next few weeks." Second, this isn't a permanent bump, though it is a lengthy one: you get the freebie for the next two years.