Mobile applications development has been enhanced by Machine Learning (ML) and Artificial Intelligence (AI). The integration of ML models in applications in order to classify or predict events allows the creation of applications able to understand and recognise user’s behaviour and make their experience more intelligent and interesting. An easement to understand example is the next words suggested to user based on the previous content typed while texting messages. So, this article will analyse the integration of a ML model into a mobile flutter application to audio recognition.