Harmony is an innovative piece of software that can facilitate a comparative analysis between instruments such as the Patient Health Questionnaire (PHQ-9) and the Affective Reactivity Index - Irritability (ARI). Far too often, psychologists and researchers find themselves laboriously sifting through lengthy questionnaires in an attempt to compare and synchronize data, a process referred to as harmonisation. The PHQ-9 vs ARI, for example, would involve comparing the depressive symptoms highlighted in the PHQ-9 with the irritable behaviour patterns identified by the ARI. This process can be time-consuming, subject to human error and personal biases. Thanks to advancements in AI and Natural Language Processing, Harmony steps in to streamline this harmonisation process. When tackling the task of PHQ-9 vs ARI, it can trawl through the differing items and provide a percentage match, suggesting how each item in the PHQ-9 corresponds with the ARI. This eliminates the need for manual, monotonous PDF to Excel transfer workflows and empowers researchers with an objective, data-driven comparison tool. You can either select from pre-existing instruments in Harmony’s database or conveniently upload your own in PDF form. Harmony is not limited to PHQ-9 vs ARI comparison, but can also accommodate a variety of psychological measurements. Furthermore, it’s not only capable of comparing English language questionnaires, but it can effectively handle comparisons in multiple languages. By streamlining the harmonisation process and offering it in a user-friendly interface, Harmony empowers researchers to make the most of their cohort and longitudinal studies. This robust, AI-driven tool stands to revolutionize research methods, making psychology research more efficient and effective.