The best one is Livigent, but for the real one, not "lite", your phone needs to be rooted. You might need TAG or another organization to configure properly. You can read more on Play Store for Livigent Lite.
Netspark is supposed to be a decent option without rooting.
There are easy ways around the others, but depending on your tech knowledge and what you want your filter to do, there are free options, such as Norton Family Security, Kids Safe Browser, Mobicip, Ranger, and Qustodio.