As an Android phone user, I always feel a bit left out when I see an app is for iOS only. Thankfully, I'm not alone. As shown by a recent Neilsen survey, slightly more than half of all smartphone users have Android-based devices:
While there are certainly more issues inherent in developing apps for Android devices (or so I seem to hear everywhere, because I'm not a programmer), I think it's really important to see that while everyone talks about the iPhone and iOS devices, Android devices have a strong hold on the market. As we continue to push to mobile-native apps, equal attention needs to be given to the 50+% of smartphone users with Android devices, as well as users of feature phones and other smart phones (even though their share of the market seems to be diminishing on a regular basis).