Everything stays on your device. Vibe Coder Flashcards has no accounts, no sign-in, no analytics trackers, and no server of its own. Your progress (XP, streaks, card history, settings) is stored only in your browser's local storage and never leaves your device unless you export it yourself.
The app loads its fonts from Google Fonts on first visit; after that it runs fully offline. If you choose to support the app, payment is handled entirely by Buy Me a Coffee (Stripe) on their site — we never see or store payment details.
Questions or feedback? Email contact@evergreencontent.app.
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