"Trivial" views are the rule though. And with autolayout, IB is much more important since it's the only way to effectively test the behavior of your constraints

"Trivial" views are the rule though. And with autolayout, IB is much more important since it's the only way to effectively test the behavior of your constraints interactively. (By setting the screen size to "free form" and dragging the control handle, like a web browser window.)