http://emcc46ukd57uahbhu7c5zo7spvcjooj6mcb4pvh2jblv27jygjdzilid.onion/182.html
On the iPhone running iOS 11.3.1 that I tested it with, the app prompted me to create a VPN in settings. You might see an error message at first, but despite that, the app’s main page, which shows a swirling lock symbol, will whirl a bit and then activate your VPN.