I build plainkit.app, a small set of privacy-minded browser tools. The idea is boring on purpose: open a tab, use the thing, close it. No ads, no signup, no tracking. The whole site loads only from its own domain — no Google Fonts, no CDNs, no analytics beacon. You can check it yourself in DevTools → Network. The newest one is Tetris. Your high score is saved only in your own browser (localStorage), nowhere else — close the tab and it's the only place it lives. For the people who care about ...