SwiftKey, makers of a third party keyboard for Android, joined up with two technology publications to survey over 17,000 smartphones users about the number of paid applications they have on their devices. Back in 2011, 12% of Android owners said they had zero paid apps on their phone. Only 10% had 20 or more paid apps. This year, those figures are now 7% and 19% respectively. Translation: Android users are slowly becoming more willing to pay for apps, but if any serious money is to be made here then you’re going to have to make free apps that are ad supported.