Here's your chance to get free minutes or texts - all you have to do is sign up to mobile phone application Eqo and invite your friends to join the service.

The Eqo promotion gives its users free calling time and text messages for every friend that joins its Eqo network. The application lets you make cheap international calls, send texts and instant messages to anywhere in the world.

Never pay for texts again

"We don't charge for calls and texts between Eqo users, so our users already recognise the inherent benefit from sharing Eqo," said Rich Roberts, Eqo's vice president of marketing.

"This promotion gives our users the extra reward of free Eqo credits so they can make free calls to landlines or to people who don't use Eqo yet. Our customers may never have to pay for an international mobile call or text message again."

For every friend you recruit to Eqo, you'll receive 75 pence in Eqo credits, which can be used towards free international calls and/or 25 text messages.

The promotion runs until the end of the year.