I just recently launched my new app - codeurl.net which is very useful for people who wants to shorten links.
One of the key features of this app which is not on the other app like this is the QR Code which you can use to post on your site, etc.. I also have a share functionality for you to share the links from the app itself. There is also a simple analytics to see the number of clicks been made with your links, and more improvements in the future.
You can also customize your links by putting the code that you want using your FREE credits which you can earn by simply register to the app - codeurl.net/register and earn more by inviting friends to sign up - codeurl.net/invite/create
Registration is totally FREE!
Hope you like it and would like to hear comments for improvements.