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Low‐cost air pollutant sensors suffer several interferences due to the variation of climatic elements. Recent studies look for calibration solutions based on different regression and classification machine learning algorithms. The present work brings together the implementation and extraction of performance metrics from these algorithms in a single open‐source tool. Both the input data and parameters for each algorithm are automatically configured. This feature makes the tool compatible with any input dataset and removes the need to interact with complex codes.In this paper the structure of an open‐source tool is introduced for evaluation of calibration techniques used in low‐cost air pollutant monitors. Different algorithms can be configured and used, such as regression techniques and machine learning classifiers. In addition, this tool was implemented to be compatible with any input dataset. These features remove the need for the user to interact with complex codes. [ABSTRACT FROM AUTHOR]