Tango Video Calls has recently been updated to support the iPod touch 4G. Additionally, the app is now Retina-optimized, and its contact list has received a great makeover.

The application, which is currently free in the App Store, allows iPhone 4 owners to make video calls over Wi-Fi and 3G. We told you about this promising app when it was released, back in October. Following this, the app has proved to be very popular, and has received a great many five-star reviews in iTunes.

Now, the app’s latest version supports the iPod touch, which is great news. A new contact design, and “improved” audio quality and connectivity means iPhone owners will benefit from this update as well.

So, what are you waiting for? Check out the updated version of Tango Video Calls in the App Store now. And, be sure to post your thoughts in the comments below.