Lookout

Lookout is a free app offering your mobile phone all-in-one protection. It provides continuous app scanning from viruses, malware, adware, spyware. Besides, it can map the location of your lost phone, computer or tablet from anywhere by automatically saving your device's locations as long as it is powered up. The free subscription also gives your backup of contacts as well as a remotely triggered scream alarm. Lookout also offers in-app purchase for $2.99/month or $29.99/year for better protections of your device, such as automatically photo backup, theft alerts, managing all your devices from an account and more.