“抢票”的正确说法是：
ticket grabbing

grab的英语解释：
take hold of something or someone suddenly and roughly

抢票软件就是
ticket grabbing app

“抢票”的另外一种说法是：snap up tickets
这里snap up的意思是：
to buy or get something quickly and enthusiastically because it is cheap or exactly what you want
抢购