Is there any URL scheme that will launch the Calendar app on iOS?
I use Prowl to push Growl notifications to my phone. They just added support to launch an app with a URL based on the notification. I tried cal:// caldav:// and ical:// without any luck.
Try this. it works for me. Here is the link
[[UIApplication sharedApplication] openURL:[NSURL URLWithString: @"calshow://"]];
Update: you can now use the calshow://
URL to open the Calendar app on iOS.
See this question: Apple does not list this application on its Apple URL Scheme Reference.