An antivirus app for Android can clean viruses, trojans, malicious URLs, infected SD cards, and other types of mobile malware. In addition, the app can protect your privacy from other threats, such as spyware or incorrect app permissions.

Fortunately, a truly good free antivirus app doesn’t have to suffer from the performance issues you’d expect from such tools, such as high RAM usage, too much bandwidth, and so on. I specifically selected these apps because they excel in terms of usability, system resource requirements, user reviews, and feature set.

Here are the four best antivirus apps for Android, each with its own unique benefits:

Some of the apps on this list are packed with features, but that's where Bitdefender stands out: it's completely free of unnecessary bells and whistles, and only includes an antivirus program.