I have a galaxy S4.
Poop Log - Tracks pooping. xD No joke.
Authentic Weather - Clever and funny way to tell me what the weather is like. Right now it says: "Fucking brain freeze. Fuck yeah, ice cream!" (75F).
Instagram - If you don't know what this is, I'm not sure how to help :l
Rainy Mood - This one is a cool app. It plays 10,000 hours of high quality recorded rain / thunder noises. The sound tracks are from multiple documentaries and other various sources. You can play it with other apps that play music.
Chrome - Browser
Ghoul Catchers - Neopets
BP Diary - Records my blood pressure. I have to keep track for my health issues.
Netflix
Google Play - Music playing app. Monthly subscription. I really love this one.
FB and Messanger
Amazon Kindle / Music
Ccleaner
Some less frequently used:
LIFX - This is to control the light bulbs I have in my house.
CRAM - Flashcard app. Great for studying and such.