Contemplating the comparison of two widely used psychometric tools, the Center for Epidemiological Studies-Depression (CES-D) and the Effort-Reward Imbalance Questionnaire (ERI)? The CES-D vs ERI comparison can be daunting due to the different item constitutions in each tool. However, thanks to Harmony, a unique tool that utilizes advanced natural language processing and generative AI models, this process is no longer tedious. Harmony excellently simplifies the CES-D vs ERI comparison by offering an efficient way to harmonise questionnaire items, including those in multiple languages. Harmony’s database comprises various instruments. Not only do you have the freedom to select instruments from the database, but you can also input your own instruments in PDF form via Harmony’s accessible web interface. By indicating a percentage match between each item in CES-D and ERI, Harmony provides an easy and accessible way for psychologists to compare these two critical instruments in their research work. In summary, the use of Harmony in facilitating CES-D vs ERI comparison can’t be stressed enough. This tool’s capabilities span efficient matching of questionnaire items, comparison of instruments in multilingual formats, and database functionality for flexibility in instrument selection. Therefore, do not hesitate to leverage Harmony for your CES-D vs ERI harmonisation tasks and much more in your psychology research.