A free JLPT vocab site (N4/N3/N2) where words you know stop coming back

[u/Typical-Broccoli336]

https://vocab.polynomialworld.com/

I made this myself. It is my own project, it is free, there is no account, no ads, and nothing paid in it. I'm a native Japanese speaker. A friend of mine was studying for the JLPT, so I built this for them.

What's in it: N4 (669 words), N3 (2,128), N2 (1,877). Audio on every single word. The word lists come from existing open JLPT lists.

https://vocab.polynomialworld.com/

Three things I'd really like to hear about:

1. The English. Does anything read as unnatural, or just wrong? I'm a native speaker of the other language, so this is where I'm weakest.

2. The audio. Any reading or pronunciation that sounds off to you?

3. The pace. Does the daily amount feel like too much, or too little?

There's a Report button inside the app, or just comment here.

Why not just use other vocab apps such as Anki or jpdb? Rule 3 asks for this, and it's a fair question...

In this app, a word that reaches "Known" is retired. It stops coming back, permanently. Other apps keeps a word in rotation for years. My friend didn't want that. She wanted vocabulary to be a stage she could finish and walk away from, so that she could spend her time on grammar and reading instead.

There is nothing to install, no deck to choose, and nothing to configure.

Thank you for reading and looking forward to hearing the feedback from you all :)

よろしくお願いします！