Never used xcode before, using it now for ios phonegap dev. I have found that when I run in simulator I can see the logged information in the output view of xcode, which is fine as far as it goes. However, even simple syntax errors like omitted commas do not cause any visible error messages to appear during build or test run. All I get is a blank screen and I have to hunt around by eye until i find "oh yeah, there needs to be a comma after that config element". This is a painstaking way to develop.