Infinity Boosts are a new form of boosts that you can earn that work similarly to Unlimited Lives, however they are slightly different:

An Infinity Boost will let you use a given boost as many times as you wish within a set time period.

An Infinity Boost will give you an amount of time to use a booster and this will count down in REAL TIME, unlike Unlimited Lives, which is only in game.

Whether or not the game is on or off, your Infinity Boost will count down so please remember this when choosing to activate the boost.