BTBalloon is a custom UIView subclass that will display text and optionally an image and/or button in a balloon style popup. You could use this view as tool tips to highlight various parts of your apps UI, or create an interactive tutorial (see example project). Think of BTBalloon views as being a cross-between UIAlertView and UIPopover.
A UILabel subclass which detects given patterns specified by regular expression and makes them tappable. This also allows to replace the default ellipse of UILabel with tappable attributed string. Convenience methods are provided for hashtag, user handle and URL detection.