Meipai by ididi Not exactly UI but the coolest app icon I've ever seen
30 Absolutely Epic App Icon Designs for Inspiration - via
Base app icon by Jackie Tran
App Icon ( by Newar
Memoir iOS icon, yet another project with brother Hoffman.
A rather simple iOS icon I did recently for a client. Don't forget to check the view :) Edit: Some options proposed to the client.
memoir mac store icon by Eddie Lobanovskiy - Dribbble