After reading Apple founder Steve Jobs' autobiography, Emma Townsend decided to create her own app. She also noticed that there was quite a bit of food wastage going on in the home, so she decided to put them both together.
The St. Leo's College, Carlow school girl created the 'zero' app, allowing people the chance to see what they can still consume and what they'll have to throw away.
"It took a very long time to make. Probably since around September and I've been working really hard on it," she said.
"If I'm lucky I might get an award, but I hope so, because I put so much effort into this."
Ms Townsend said she's also looking forward to looking around at other exhibitions and seeing how inventive her competitors are.
"It's nice to be around people who like science as much as you do," she said.
Her mother has started using the app to cut down on food wastage around the home.