Search for Chinese teaching tools and every result generates a PDF for a photocopier — worksheets, grids, flashcards to cut out. They are good at that. None of them is built for the hour you spend with a learner on a screen, which is where most Chinese teaching now happens.
A URL is a saved lesson
Every instrument keeps its whole state in the address bar — the characters you chose, the order, the settings. Copy the link and you have saved the lesson; paste it into a chat and you have handed it over. Nothing to export, nothing to attach.
6 of the 21 open without an account.
Made to be watched, not handed out
Stroke order animates at whatever size the screen is. Tones are heard rather than described. A timer, a picker and a scoreboard are there because a room needs them. It is designed for the moment two people are looking at the same thing.
It still prints, if you want it to
Every board prints from the browser, signed out, on any plan — handouts, a reference sheet, a lesson plan to keep. The printable is the fallback here instead of the product.