Daily UI Challenge: Social Media Sharing App

For the daily UI challenge, I decided it makes sense to focus on one project for more direction and in the end, I would have a finished project as well :)
The project I chose is my partner's Abdulrasheed Afolabi idea - an app making social media sharing easy and fun. I am trying to help him develop it and I find it challenging, which is the key to growth, isn't it?
Ch. N1 and N3 (Sign up and Landing page) with a login page added by me.
Contrasting colours: one more corporate and trustworthy and the other - more fun and vibrant. My favourite font - Nunito. Clear CTA buttons.