title: How is the tongbu tui app able to be installed directly from the browser on non-jailbroken iOS devices?
body: <p>All a person need to do is take a regular iOS device and visit <a href="http://tui.tongbu.com/m/iphone.html" rel="noreferrer">http://tui.tongbu.com/m/iphone.html</a> and click the big grey button with the apple logo, and then click install. Then the tui app will be installed. How are they able to distribute this app on non-jailbroken devices without the app store? And how can this be replicated?</p>