Worried about the security of your Android phone or tablet? Worry no more. I've found the four top Android security apps as rated by the independent AV-Test Institute, and every one of them is free.
This one detected 100% of the 2928 malware samples thrown at it, which is above the average Android rating of 97.6%. The institute also gave it a perfect scores in usability, including generating no false malware warnings, and not impacting battery use or slowing down an Android device. It doesn't include anti-theft tools, though.
The well-known Windows protection tool Avast! also has an Android version, and it's a winner. It detected 99% of malware samples and got a perfect score for usability, generating no false positives. Like AhnLab V3 Mobile, it includes anti-theft features.
Here's another maker of Windows protection software that makes an Android version. Its protection was rated at 95%, and it got a perfect usability score. It also includes anti-theft features.
This one had a 100% perfect score for finding malware. So why wasn't it rated at the top? Because it generated three false and so only got a 4.5 out of 6 usability score. It includes anti-theft tools.
Note: AhnLab V3 Mobile was rated as the top Android security app, Alibaba Mobile Security was rated as the second-best Android security app, and Anguanjia Security Manager was rated as the third-best. But on Google Play there weren't English-language descriptions and versions so I didn't include them in this roundup.