Worm: Worm is mainly a filming app but you can ONLY get photos/covers from a video that is over 60 fps. It is used for extreme sports like skateboarding, BMX, snowboarding/skiing, swimming, you could also use drones for scenery, and other sports. The cool thing about worm is that you can hold down the video and it will play in slow-mo. this app is my favorite because i am a skateboarder and i want to see what others post and i want people to see my post and progression in skateboarding.
Instagram: Instagram is a social media app that lets you take photos and videos and upload/post them into your story or permanently into your profile. I personally like it because there are different communities and you can upload a lot of things that interest you and/or others.