Imagine being a psychologist or social scientist and having to compare the General Health Questionnaire (GHQ-12) and the Self-Perception Profile for Children (SPPC). This comparison, termed as harmonisation, can be incredibly time-consuming and subjective when done manually. This is where the software application Harmony comes in, revolutionizing the way we compare such instruments by using natural language processing and generative AI models to harmonise questionnaire items, a breakthrough in the field of psychology and social sciences. The term “GHQ 12 vs SPPC” identifies the act of comparing these two tools used extensively in psychology research. Yet, the process has traditionally been done manually, leading to potential inconsistency and bias. Harmony automates this process, providing a comparative percentage match between each item found in the GHQ-12 and SPPC. The beauty of this software lies in its impressive database of instruments which the users can select from. Alternatively, researchers can upload their own instruments in PDF format to the Harmony web interface for comparison. Comparing tools such as the GHQ 12 vs SPPC across various studies allows for gauging the consistency of results or spotting variances due to changing social conditions. The Harmony software takes this a notch higher by offering a multi-language comparison capacity, hence accommodating a global community of researchers. We invite all psychologists and social scientists to explore the power of Harmony when it comes to comparisons like ‘GHQ 12 vs SPPC’. The efficiency and precision brought about by Harmony are unparalleled and are a testament to the innovation in the sector.