*3.6. Proof of Concept*

We designed and implemented a Web application to demonstrate how the personalized prediction based on machine learning and activity tracker data could be used in practice. We developed this application as a Web application, which can be accessed on http://personalized-coaching.compsy.nl/. In this application, the user can input the values 'Hour of the day', 'Steps previous hour', 'Total steps till the Hour', combined with the participant's ID and the algorithm to use. The Web application then uses the individualized model and input data to predict the outcome together with the probability thereof.
