An intelligent shopping list which can recommend healthy options and tell you when you need to buy milk scooped the £3,000 top prize after winning a tech challenge.

The third edition of start-up event Sync the City wrapped up with Pantry being named winners by the judges.

Teams of developers, designers and business people competed to create and launch a business in just 54 hours at the King's Centre in Norwich.

Ideas, which were pitched on Thursday evening, included a donation system which would see hair woven into fabric to make clothes, a chat bot to inform you of events in your area, a device which attaches to a light-fitting and powers smoke alarms and software to break down a piece of music so musicians can play along.

Sync the City was organised by tech group SyncNorwich and the University of East Anglia and brought together more than 100 people to get involved.

The £1,000 people's choice prize, voted for by participants and the audience, was won by bullying advice bot Hector Help.

Teams had to create a brand, carry out market research, come up with a business model and create a prototype within the time limit, then pitch it in five minutes to the audience.

Chris Ballard, who works as a data scientist for Norwich firm Brandbank, was part of the winning team.

He said: 'I am a bit shell-shocked, I can't quite believe we have won. We all put in so much work and are so tired.

'We made so many things that we couldn't even show in our pitch so it is nice the judges took that into account.

'The experience has been tiring but exhilarating.'