ios safari address bar

I'm using Adobe Captivate 9.0.0.223 on a Mac, and assessing Captivate vs Articulate and other eLearning editors.

When I publish the simplest possible Captivate training to HTML5 and load the resulting output without any other editing on an Apple iPhone 5s Safari browser, the display will remove neither the top safari address bar, nor the bottom safari navigation bar as is customary when using an app such as this.

My presentation is set to the size 320x538, which is the generally the accepted viewport size in Safari for displaying a web app, less room for Captivate navigator at the bottom.

I'm quite surprised at this behavior, since I can't believe that (1) I'm the only person that has tried the most popular telephone with HTML5 from Captivate (2) that Adobe didn't test output on IOS on Safari on a relatively recent phone.

There are no settings in the publish and "responsive" design section which address this, and editing the javascript in the index.html there is no effective way to do a window.scrollTo(0,1) call which usually turns off the address and navigation bars.

What would people suggest for a workaround to actually display the full page of a training without upper and lower interference from the IOS safari browser?