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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.
youtube vanced (for mobile)
youtube vanced equivalent for android tv
There is also this extension which shows you a like/view ratio, which can give you an indication if a video is trash: https://github.com/amnrst/youtube-like-to-view-ratio/
then I assume that they are storing the counts because that's what they say they are doing, but of course we don't know what is happening after it's sent off because the backend is closed source. it might be someday, but for now it's not