The Calling All Innovators Africa competition is open to all mobile and web application developers, from those new to mobile applications to experienced coders. So long as you've got a big and bold idea and the talent and passion to make your idea a reality, you're welcome to enter.

You will also stand in line to win spectacular prizes: we'll give the overall winner $85,000 in cash as well as the opportunity to show off your winning application at a Nokia-specified event; and premium placement featuring your winning application on Nokia's Ovi Store.

The four runners-up each win $10,000 in cash and a premium placement on the Ovi Store. Additionally, the top ten entrants will be awarded the Judges' Choice Award, a one-year membership in Forum Nokia Launchpad, worth €300.

We invite you to submit applications of any type – productivity tools, entertainment, utilities, audio and video, widgets, games, wallpapers, ringtones – you name it. All are welcome as long as they are appealing to the African continent. Just pick an app and get developing.

Full details about the competition can be found in the official rules. Nokia reserves its rights to amend the competition terms and rules from time to time.