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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.
It is possible languages that do no share roots. You also need to create a different environment for studying each language. I am studying Korean and Chinese st the same time. And even though they share the some words and the Characters they are essentially separate languages because Standard Mandarin was "redesigned" to be closer to English Grammer while Korean and Japanese follow "closer" to ancient Chinese. Due to the way I am studying each language, I almost never get confused. I will caveat this with I had been studying Korean for 7 to 8 months before starting Standard Mandarin so I had a foundation that was somewhat solid. I am using Mandarin Blueprint and Anki for Mandarin and for Korean LingQ, Memrise, Anki and supplementing it with Talk to Me in Korean.