The association between data sets and questionnaires, specifically those concerning psychological and sociological studies, can be found in the very similar nature of certain questions. The Specific Phobia of Vomiting Inventory (SPOVI-14) and History & Aetiology Schedule (HAS) are prime examples. While both SPOVI-14 and HAS have their unique areas of focus, the challenge lies in time-consuming and subjective harmonisation of items within these instruments. This is where the software Harmony comes in. Harmony, developed for psychologists and social scientists, utilizes natural language processing and generative AI models to compare and harmonise questionnaire items. Whether the questionnaires are in the same language or different ones, Harmony simplifies the tedious task of harmonisation. The platform can be immensely beneficial in the context of SPOVI-14 vs HAS comparison. It comes equipped with a large language model, enabling it to provide a percentage match between each item in the two instruments. Harnessing the power of Harmony in the SPOVI-14 vs HAS analysis can lead to valuable insights and ease the strain of data harmonisation. By uploading the SPOVI-14 and HAS tools onto the Harmony web interface, researchers can conduct multi-instrument, multi-lingual comparison more efficiently. Thus, Harmony converts the daunting task of data harmonisation in SPOVI-14 vs HAS into a quick, streamlined process, empowering researchers and psychologists to uncover deeper truths and correlations in their studies.