FYI it&#x27;s built using Swift and ReactiveCocoa. They put up all the dependencies licenses in Settings so I made a list of the packages they use <a href="https:&#x2F;&#x2F;gist.github.com&#x2F;ropiku&#x2F;b259f35060a40eab1597" rel="nofollow">https:&#x2F;&#x2F;gist.github.com&#x2F;ropiku&#x2F;b259f35060a40eab1597</a>.