Psychologists studying patterns of mental health across populations often find themselves in a quandary while comparing different questionnaire items, specifically, the commonly used General Health Questionnaire (GHQ 12) and Children’s Depression Inventory (CDI). Against this backdrop, the AI-driven tool, Harmony, comes as a boon for researchers aiming to perform ‘GHQ 12 vs CDI’ analyses. GHQ 12 and CDI are widely used questionnaires to measure psychological distress and depressive symptoms respectively. However, harmonising items between these two instruments to find similar variables or correlate findings can be quite challenging and laborious. This is where Harmony, with its state-of-the-art natural language processing and generative AI models, makes the task easier. The tool provides the researchers with a percentage match between each item in GHQ 12 and CDI, simplifying the ‘GHQ 12 vs CDI’ comparison process. We highly recommend Harmony for researchers and psychologists working with such questionnaire comparisons. With the ability to handle multiple languages and an easy-to-use interface that allows direct upload of questionnaires, the ‘GHQ 12 vs CDI’ analysis becomes not only accessible but enjoyable. So, take full advantage of Harmony for your research on the GHQ 12 vs CDI, or any other questionnaire analyses, and make your research process faster, reliable, and more efficient.