People heading for a night out on the town are being encouraged to download a free app to help them monitor how much they are drinking.

Alcohol awareness charity Drinkaware has launched a new iPhone mobile app which enables users to track their alcohol consumption, calculate units and set goals to help moderate their drinking.

It can tell people what foods they could be eating instead of drinking booze based on the calorie intake and informs them how much exercise will be needed to burn off calories consumed.

Ben Butler, head of digital at Drinkaware, said: " We know that while lots of people recognise the need to cut back on their alcohol intake, many lack the support to actually make a change.

"This app has been designed to help people change their drinking, by providing support and encouragement in a non-judgmental way at the times and locations people need it the most. Our app helps people to make positive changes in their relationship with alcohol, so they can start to enjoy the health benefits of cutting down or giving up".