Their primary feature is disk cleanup - removing unnecessary stuff from your drive to free up storage. Mac cleaners help clean Macs, as easy as that. What is a Mac cleaner and why do you need it? In this guide, we discuss how to choose the best cleaner for Mac to optimize storage and keep your computer in a good shape. If you do nothing about it, your Mac’s performance will start deteriorating. Over time, even the most powerful Mac generates lots of clutter - from caches to outdated apps to system files and leftovers. Make your Mac fast and secure with CleanMyMac X.