Avira offers free OS X virus scanner and Android data security tool
Avira has released two free security tools - Avira Free Mac Security - offering virus and malware protection to Mac OS X users and Avira Free Android Security.
Their Android tool is not a virus scanner but rather aims to help secure the data on your mobile device and also enable tracking and retrieval should it go missing. Avira also offers an online account which you can use to track your phones location remotely and also set it into 'lockdown mode' in which the phone is restricted to calls to a fixed number and to emergency services only.
The software is available for immediate download.