Like it but why latest OS is a requirement

Love this game but a latest OS requirement is not nice. What if one does not want to upgrade the OS! I am happy with what I have and not ready to upgrade I doubt there is anything special for the iPhone or iPod that needs to cause an upgrade. I understand that the iPad is now supported but dont force users to have to upgrade the OS. Other vendors did not do that.

Hkva about 300 Bowl