App crashes on iOS Simulator without debugging
If your app in the iOS Simulator works when debugging with Xcode, but the very same app crashes if you try to launch it without debugging, check your app for a framework listed under Linked Frameworks and Libraries, but not listed under Embedded Binaries. Once the framework shows up in both places, deploy the app again by debugging with Xcode, and then stop the debugging and try to launch it again on the Simulator.
BTW, Happy Birthday to Randall Munroe, creator of the xkcd web comic.