Manchester agency Bite Digital has created an iPhone app for the National Union of Students.

Students with NUS Extra discount cards can use the app to keep track of the offers available to them from over 120 national retailers.

Lee Holdsworth, head of mobile at Bite Digital, said: "A mobile app version of this popular discount scheme is an ideal way to help to build and maintain a relationship with students and encourage more people to take advantage of the excellent discounts on offer, while on the go."

In the two days since its launch the app has been downloaded more than 20,000 times, pushing it into the Top 50 in the App Store's free download chart.

Sharon Leeson, head of commercial development at NUS, said: “NUS Extra works with some fantastic national brands. The App offers these partners an additional attractive marketing channel in addition to the online, email social media and POS services already in place, to effectively drive brand engagement, and usage of their particular discount.”