Why only 3.1.3?

Why was this app only made for 3.1.3, tons of users are on 3.1.2 because upgrading to 3.1.3 is just a waste of time, all it does is risk something going wrong and killing time with no benefit, you are losing a lot of customers making it only on 3.1.3

georgewilson19 about LightBike Free