Lookout is a lightweight application that has a small influence on device performance such as start up times and battery life. Although when downloading applications there is a slight slow down because Lookout will scan every application.
Lookout received a detection rate result of 96% from AV Comparatives' mobile security review ahead of some but behind Kaspersky, Bitdefender, and Avast!. AV Test gave Lookout a 5.5/6 protection score and and a 6/6 usability score behind Kaspersky and Bitdefender and tied with Avast!.
Safe browsing (a feature that scans every link and site you visit), privacy advisor (manages and explains application permissions), remote lock, remote wipe, enhanced backup, and a few other features are reserved for premium users only. Fortunately though for antivirus purposes Lookout premium is...
Kaspersky recieved a 99.7% detection rate result from the AV Comparitives Mobile Security Review behind only AhnLab and Kingsoft. From AV Test, Kaspersky recieved a 6/6 in both protection and usability.
Kaspersky is not the most lightweight application or as well optimized as applications such as Lookout. Some slowdowns may be experienced using Kaspersky but that may be a necessary sacrifice for Kaspersky's stronger virus detection rate.
The free version of Kaspersky will not automatically scan new applications after they are downloaded. Cloud enabled protection to react to fast and new threats is also a paid only feature. The paid version of Kaspersky is $14.95 a year.
AV Comparitives mobile security review scored Avast! with a detection rate of 99% above Lookout but behind Kaspersky and Bitdefender. Avast! received a 5.5/6 in protection and 6/6 in usability from AV Test, tied with Lookout but behind Kaspersky and Bitdefender.
Some anti-virus features such as advertisement detector, application Management, SMS and Call Filter, Application Locking, and Network Meter are available only for premium users that pay $14.99 a month.