How do I use my own URL shortener in Twitterrific? (Mac & iOS)
You are using t.co links whether you realize it or not. Twitter shortens every URL that is longer than about 14 characters. Using Twitterriffic, the original URL is shown because we are able to display it if it comes through via t.co services. If you go look at that same tweet on the website, the URL is a t.co link every time.
Since there is a chance that Twitter can decide to pull support for any other URL shortener at any point, we are spending our time on building other features and improving functionality within Twitterrific itself instead of having to code (and test and fix and re-test) around whatever decisions Twitter makes, whenever they make them.