Privacy Policy

Overview

Flashcards is a privacy-first flashcard app. We collect only the information necessary to provide and improve the service. We do not sell or rent your data to third parties.

What we collect

• Account information — Username, email, and password hash when you register. If you sign in with Google, we receive your Google email and profile name.
• Deck data — Flashcard decks you create or import, including words, translations, and sentences. This stays private to your account.
• Study progress — Which cards you've reviewed, their mastery stage, and schedule. Used to drive the spaced repetition algorithm.
• Local storage — In guest mode, progress is stored in your browser's localStorage. This data is not synced across devices.

What we don't collect

• No tracking — No analytics, no cookies for tracking, no advertising pixels.
• No third-party scripts — Only Pico.css from a CDN and the app's own JavaScript.
• No data selling — Your flashcards and progress are never sold or shared.
• No AI training — Your data is not used to train artificial intelligence models.

Your rights

• Export — You can export any of your decks as JSON at any time.
• Delete — You can delete any deck or your entire account from the Profile page.
• Opt-out — You can use the app entirely in guest mode without providing any personal information.

Contact

For questions about this privacy policy, file an issue on GitHub.