Bats are what prompted me to write my “Mobile Apps Must Die ” blog post as their app-for-every-bat approach just isn’t sustainable. As we get more and more bats in the world, the user overhead of app maintenance is going to break down. This is the primary difference between bears and bats: bears carry their interaction within them as they can afford big screens and pointing devices. Bats, being small and inexpensive, need to have it added on by another device.