Support

Questions, problems, or ideas for Liu Cards? We're happy to help — email info@codesuma.dev and we usually reply within a couple of days.

Frequently asked questions

What is Liu Cards?

A flashcards app with spaced repetition built in. You create two-sided cards, flip through them in a full-screen feed, and review them when the scheduler brings them back — just before you'd forget.

Do I need an account?

No. You can start creating cards right away. Behind the scenes the app keeps your cards under an automatic anonymous account. If you sign in with Google or Apple from the menu, your cards are linked to that account and follow you across devices.

How does the review work?

Open Review from the menu. For each due card, try to recall the answer, flip, and tap "I know" or "Don't know". Your answer decides when the card comes back: cards you know well wait longer, cards you miss return sooner.

What are channels?

Channels are public collections of cards. You can browse channels, subscribe to see their cards in your feed, and save individual cards into your own reviews. You can also create a channel and publish cards for others.

Are my cards visible to anyone else?

Only cards you publish to a channel are visible to other users. Everything else — your personal cards, saved decks, and review history — is private. See the Privacy Policy for details.

How do I delete a card?

On any card you own in the feed, tap the trash button. Deleting removes the card from our servers as well as your device.

How do I delete my account and data?

See the account-deletion page — deleting individual cards works right in the app, and full account deletion is one email away.