Android has Three good free security app options. Avast Mobile Security, McAfee Mobile Security app, and Sophos Mobile Security. All three have a free version and will help check for malware apps as well as providing some extra security / control features.
After Testing our choice is Avast the free version did what we needed but the paid version had some great extras that some will want. We also found Avast took much less system resources than the other two.
To learn more about Avast
To learn more about McAfee app go to
To learn more about the Sophos app go to
All three are a good option depending on what features controls you want to have on your device.