It is not possible to add to the notification center by default. Every user has to click edit and add the widget manually. What makes this even worse is that a

It is not possible to add to the notification center by default. Every user has to click edit and add the widget manually. What makes this even worse is that apple is currently featuring this PAID app in the hand-picked app store section as a "best-of" for the new widget feature. That's brutal for both paying customers who will get a downgraded new version and for other developers with in-development projects inspired by this highlighted example. Also, "don't do math" - how are developers supposed to understand that rule? Are all "ADD", "SUB", "MUL", "CMP" opcodes banned? How do you even do UI layout without "math"?