Jamie Flower, Emma Gosling, Kate Hanson, and Annie Howard, all aged 14, worked on the idea together.

“We are very excited about where the app will go from here,” the girls said. “The Apps for Good course gave us wonderful insight into the correct way to plan, structure and create effective apps ready to take to market. In terms of our future careers and lives this has been a unique opportunity. To win the award was the icing on the cake.”

Launched at a public event at Thomson Reuters in London tonight, the app won the “Keep Moving – doing things on the go” category sponsored by BlackBerry at the ‘Apps for Good’ Awards 2013.

Since winning that award in June, the girls have worked with development agency Code Ten to have their app built professionally before today’s public launch on BlackBerry’s app store.

A screenshot of what the Pitch Pals app looks like in operation.

Debbie Forster, UK managing director of Apps for Good, said advancing technology was a great way to get through to children.

She said: “Traditional education systems are wasting talent. Many young people are de-motivated by traditional teaching methods that leave them ill-prepared for the real world.

“Technology is advancing; exciting the imagination of young people who want to use it to make, play and share. We believe that technology can be a great equaliser and a massive force for good to transform lives and communities anywhere around the world.

“Given the lack of women in technology at present, it is particularly exciting to see a girls’ team winning their category with such a creative app idea.”

The app is now available on BlackBerry World.