I just installed the Lite version to try it out. So far it is working perfectly. At default it was too dim (at complete darkness) just like the default stock auto brightness. But after I figured out you could "link" your preferred setting, it seems to work great. I tried it outside in full light, around the house in the different brightness, turning on an off the screen a few times... all seem to work so far. I will test it out for a week or so and if it is still working I will pay for the full version to support the app.