Comparative analysis of different psychological measures is critical in advancing research and enhancing psychological understanding. Harmony, a cutting-edge software tool, enables researchers to undertake such comparative analysis with ease and efficiency. In the context of comparing the General Health Questionnaire (GHQ 12) and Health-related Quality of Life (HRQOL), Harmony is a phenomenal asset. The software employs advanced natural language processing and generative AI models to harmonise and match items from these different questionnaires. Traditionally, GHQ 12 vs HRQOL would have required exhaustive manual work. However, with Harmony, the comparison can be performed rapidly and accurately. The tool not only matches questionnaire items but also quantifies their similarity using a percentage match. Significantly, Harmony can deal with items in multiple languages, vastly broadening its utility for international studies. One of its standout features is its ability to compare GHQ 12 vs HRQOL across diverse studies, facilitating researchers to check results consistency or social changes impact. The highly efficient and reliable comparisons provided by Harmony for GHQ 12 vs HRQOL empower research in psychological distress, mental health, physical health, and quality of life in a profoundly transformative manner. The software can be easily accessed through its intuitive web interface, making it an indispensable resource for psychologists and social scientists.