Ray uses AVG on his Windows computer, and is wondering if he should get AVG on his Android phone as well. Leo uses Lookout, which offers extra features such as the ability to remote wipe the phone, or to track the phone's location. Since AVG has this also, they probably are pretty similar in what the programs offer.
The question is really, is an app like this needed? There are malware programs on Android, but smartphones in general are less susceptible to attack. This is especially true on iPhone.