I really like this design. They did a really good job at making it look sleek and professional. Everything flows nicely together, and since the buttons/tabs don't have a stroke on them they help the design come together.
Beats for iPhone Beats combines a BPM counter, an advanced DJ metronome and a key-mixing aid. It won’t mix the records for you or get you a drink from the bar, but it might help you become a better DJ.
How the iPhone's UI Would Look If It Acted Like the Apple Watch
I've done it with AE. You only need two layers effects in your timeline. The first one is to blur and the second one to make sharp borders. The vector elements below will be gooey when they will be close ;