what you’re describing is a very specific need. so i doubt anyone has written something that does exactly that, but the general components of what you’re describing are fairly common needs. a lot of what you’re describing is just comparing one dataset against another (ex. your garden vs the nation, obs from a given date vs obs for the year, etc.). there are many existing tools that do some variation of this, but if you want to compare raw data, i would start by looking at: https://forum.inaturalist.org/t/several-external-tools-for-inat-data-by-kildor/19906. if you’re looking at comparing observation time series or comparing geographic ranges, you can use the experimental compare tool: https://www.inaturalist.org/observations/compare.
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