I have always been a fan of Anubis and NoVirusThanks. It is great that this app allows directly submitting installed apps to Anubis Android APK analyzer. Reports look neat as well, specially display of detection rate and remaining time. It would be great if developer could add support for VirusTotal as well.

Another nice product by Amexter. Really, like the "save search" feature and will surely be useful in learning Google search tricks.