You Can Simulate iOS Devices on Macos

tl;dr

Use simulator.app from XCode to test your websites on iOS devices.

Running

1. Open Xcode
2. Navigate to Xcode > Open Developer Tool > Simulator
3. In Simulator, navigate to File > Open Simulator > iOS xxx

Debugging

1. Open Safari in simulated device
2. Navigate to page to debug
3. Launch Safari on Desktop
4. Go to Developer (Entwickler) > Simulator XXX > localhost