Software Matching and comparing data across different questionnaires such as the Strengths and Difficulties Questionnaire (SDQ) and the Drug, Alcohol and Self Injury Questionnaire (DASI) can be quite a challenging task for psychologists. The process of harmonisation requires a systematic approach to accurately crossmatch between concepts and terminologies. The SDQ vs DASI comparison, for instance, involves different themes of human behaviour and mental health. However, the advent of Harmony, a tool designed to aid this matching process, has made it possible for psychiatrists to harmonise these questionnaires efficiently, even in different languages. Harmony employs natural language processing and generative AI models to assist researchers in comparing questionnaire items between SDQ and DASI, and other related questionnaires. This capability is exceptionally relevant for SDQ vs DASI comparisons. Harmony takes away the time-consuming task of manually going through comprehensive PDFs and transcribing them into Excel. With a simple drag-and-drop feature, researchers can upload PDFs of their instruments into Harmony’s user-friendly web interface and promptly have the data harmonised. Harmony not just provides a better way of making comparisons both within and across studies, but also has an impressive capacity to compare items in multiple languages. This is particularly useful for international or multilingual studies. The innovative approach by Harmony to SDQ vs DASI and other questionnaire comparisons promises greater accuracy and significantly reduces the time and effort required in the harmonisation process.