We have contributed a tool to MyGeoHub (https://mygeohub.org/). "MyGeoHub  hub supports the geospatial modeling, data analysis and visualization needs of the broad research and education communities through hosting of groups, datasets, tools, training materials, and educational contents". The tool is a leaner soil Nitrogen model that predicts daily soil Nitrate and Ammonia of agriculture field. Input required are daily soil moisture content and Nitrate and Ammonia application. The hosted tool can be freely accessed at https://mygeohub.org/tools/benfeddersen . No download or local installation is required. It is also Operating system independent. Please feel free to try out the tool and please give valuable feedback for future enhancement.

Reference for the publication related to the tool is "Bhar, A., Feddersen, B., Malone, R., & Kumar, R. (2021). Agriculture Model Comparison Framework and MyGeoHub Hosting: Case of Soil Nitrogen. Inventions, 6(2), 25."