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SurveyJS
Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.
Candide appears to be a UK startup: https://candidegardening.com/GB/about
iNaturalist and their Seek app (https://www.inaturalist.org/pages/seek_app) is a joint venture between the California Academy of Sciences and the National Geographic Society: https://www.inaturalist.org/pages/about
Moreover both iNaturalist (https://github.com/inaturalist/inaturalist) and Seek (https://github.com/inaturalist/SeekReactNative) are open source. The former is a Rails app, and the latter a React Native app with no account registration system making it safe and legal to use for children since all observations are stored in-device by default unless you chose to send them to your iNaturalist account to share with the community.
On functionality alone it's extremely rare for Seek not to recognize an organism (yeah, it's not just plants) and when it is, I simply send the observation to iNaturalist whose network of naturalists both amateur and professional usually manage to definitively identify my observations within a few hours. Here's a recent example: https://www.inaturalist.org/observations/86844469
The iNaturalist community itself is fascinating and quite transparent with detailed site stats (https://www.inaturalist.org/stats) and a clear mission statement ( https://www.inaturalist.org/pages/what+is+it):
Candide appears to be a UK startup: https://candidegardening.com/GB/about
iNaturalist and their Seek app (https://www.inaturalist.org/pages/seek_app) is a joint venture between the California Academy of Sciences and the National Geographic Society: https://www.inaturalist.org/pages/about
Moreover both iNaturalist (https://github.com/inaturalist/inaturalist) and Seek (https://github.com/inaturalist/SeekReactNative) are open source. The former is a Rails app, and the latter a React Native app with no account registration system making it safe and legal to use for children since all observations are stored in-device by default unless you chose to send them to your iNaturalist account to share with the community.
On functionality alone it's extremely rare for Seek not to recognize an organism (yeah, it's not just plants) and when it is, I simply send the observation to iNaturalist whose network of naturalists both amateur and professional usually manage to definitively identify my observations within a few hours. Here's a recent example: https://www.inaturalist.org/observations/86844469
The iNaturalist community itself is fascinating and quite transparent with detailed site stats (https://www.inaturalist.org/stats) and a clear mission statement ( https://www.inaturalist.org/pages/what+is+it):