One of the major challenges psychologists face in their research is comparing different questionnaires such as the Strengths and Difficulties Questionnaire (SDQ) and Eating Disorder Diagnostic Scale (EDDS). Noticing this problem, we have designed a technology that simplifies this process using sophisticated AI techniques - a tool we have named Harmony. SDQ vs EDDS compatison, when done using traditional methods, is time-consuming and subjective, but with Harmony, researchers will be able to systematically and objectively compare each item of these questionnaires. Harmony uses large language models to provide a percentage match between each item in SDQ and EDDS. This allows researchers to efficiently harmonise questionnaire items, even in different languages. Whether your source is an instrument from Harmony’s expansive database or your own PDF form input, Harmony’s user-friendly web interface makes the SDQ vs EDDS comparison process simple and efficient. In conclusion, psychologists and researchers working on a comparison of SDQ vs EDDS should experience a monumental improvement in their workflow by using Harmony. As a tool that vastly improves the speed, objectivity, and the overall process of comparing studies, Harmony stands as an indispensable tool for researchers conducting longitudinal analysis across various studies.