MECODA is a package developed on Orange Data Mining platform (a visual programming toolbox made to simplify analysis and data visualization) to facilitate analyzing and viewing all sorts of citizen science data. This service aims to break the barrier between experienced users or programmers and the general public. It allows users from citizen observatories to make their own visual exploratory data analysis without the help of specialized analysts. It also allows viewers to create their own reproducible visual data workflows, share and reuse them. https://github.com/eosc-cos4cloud/mecoda-orange/