This is how you access other apps from your own. Just find the proper url to send for accessing status. I've included a list that should have most of the important ones. Including status finding.
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"twitter://status?id=12345"]];
twitter://user?screen_name=lorenb
twitter://user?id=12345
twitter://status?id=12345
twitter://timeline
twitter://mentions
twitter://messages
twitter://list?screen_name=lorenb&slug=abcd
twitter://post?message=hello%20world
twitter://post?message=hello%20world&in_reply_to_status_id=12345
twitter://search?query=%23hashtag
Note: It can be important to make sure the user has twitter installed or this will cause a crash. So I recommend adding this in an if statement before you try to send them to twitter.
[[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:@"twitter://"]];
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