The simplest timezone app for your iPhone

I'm working on a side project called "Timezone" which is (wait for it) a timezone convertor app.

I've been working on it on and off for a few months, until recently when I decided to spend more time on it. I don't really like Apple's native Clock app and want to replace it.

I'm designing the product and would love to find someone who'd want to build this out with me for fun. Obviously I'd split this 50/50 with you.

Would love some feedback on the design!