Sentence Cards

New Sentence Card

Sentence

Tip: paste from YouTube subtitles, podcasts, articles, books. Use "One card per line" for transcripts.

Source (optional)

One card per line

Split the textarea by newline

Sentence Translation (optional)

Notes (optional)

Want a starter deck?

Target Words

Auto-extracted from your sentence. Add translations for the words you want to remember.

Not seeing a word? Add it manually:

Review

Shortcuts: Space to reveal. 1 Again, 2 Hard, 3 Good, 4 Easy.

Current Card

No card loaded.

Deck

Search and manage your cards.

Lexicon (Saved Words)

Words you've added translations for. Used to prefill future cards.

Export

Download a JSON backup of your cards + word translations.

Import

Restore from a JSON backup.

Backup file

Merge (recommended) Replace everything

Danger Zone

This deletes all local data in this browser.

How It Works

This is a small offline-first app: everything is saved in your browser's localStorage. It uses a spaced-repetition scheduler (SM-2 style) so your cards "refresh" over time.

Suggested workflow:

Capture a sentence you love (from YouTube subtitles, books, articles).
Pick 1-5 target words and add translations/notes.
Review daily: try to recall meaning + usage, then grade yourself.

Notes:

Translations are manual (no external APIs used).
Word translations are stored in the Lexicon so future cards can prefill them.
Use Import/Export to back up data across browsers/devices.