What are your favorite apps???

It was 9 months ago when I really learned what an app was.Trav bought me a kindle fire for our anniversary and that's when I had to figure it all out. Yeah, I know, I am pretty clueless about a few things... anyway, I had never had a magic phone or any other device that needed them until then, so although I had heard of them, I never knew what they were or what they did. A few days ago I got a magic phone and now I need to know what apps you love and cannot live without! Honestly if I watch another you tube video with a 12 year old girl educating me, I might die, so let me know your favorites! Thanks.