Hallon is an app that can create bookmarks in many applications that usually can’t create bookmarks and you can access these bookmarks all the time.
You can bookmark your favorite songs in iTunes or some documents that you are working on and access and open them easily whenever you want.
You can even bookmark an email that you have to reply to later that day or the contact information of a friend whom you need to contact before the end of the week and get an alarm for it at the right time to remind you and let you open just that mail or contact directly.