Caterpillar Health is the friendly rewards-based digital platform for health promotion, education, and behaviour change. The app rewards users for positive and sustained health behaviour change. Users earn the rewards they love for engaging with and learning about the benefits of increased physical activity and improved dietary habits. People are rewarded with the popular rewards they already like to collect, such as cinema tickets and gym passes. Caterpillar Health creates personalised physical activity and dietary habits goals to help people improve their health. The Caterpillar Health App helps users reduce their risk of avoidable ill health, one step at a time. The app uses the latest behavioural science techniques to create habits that stick. And is based on the world’s largest evidence base for the effectiveness of digitally delivered, rewarded behaviour change at population scale. Small Steps. Big Rewards.