How to stop WOW JS + CSS animate on smaller devices?

a pure css solution would be (even if !important is quite ugly...) :

@media screen and (max-width: 800px) {
    .wow{
        animation-name: none !important;
        visibility: visible !important;
    }
}

The inline styles added by wow will still be there but overwritten by these 2 lines, they won't apply anymore.

Change the default settings

wow = new WOW(
{
boxClass:     'wow',      // default
animateClass: 'animated', // default
offset:       0,          // default
mobile:       true,       // default
live:         true        // default
}
                )
wow.init();

to

mobile:false