INARIS DECK

Learn Japanese one line at a time—from YouTube videos you enjoy.

INARIS DECK turns subtitles you have collected into practical sentence and vocabulary cards, helping you move from simply watching to actively remembering.

■ Learn with real Japanese • Review sentence and vocabulary cards created from subtitles • Study with spaced repetition (SRS) • Practice recalling missing words with cloze exercises • Replay the original scene for context • Tap a word to view its meaning in context

■ Build your own study collection • Create and edit sentence and vocabulary cards • Organize cards into decks • Continue learning across devices with cloud sync • Receive optional daily review reminders

■ Designed for focused daily study Review one sentence at a time and let the app help you decide what to study next. Short sessions make it easier to build a consistent learning habit.

You can delete your account and associated data from within the app at any time.

Subtitle text is captured on the user’s device through the INARIS DECK browser extension. The app and server do not scrape or redistribute subtitle catalogs. Text may be sent to translation services to provide translations and word meanings. See our Privacy Policy for details.

YouTube and Google are trademarks of Google LLC. INARIS DECK is not affiliated with or endorsed by Google or YouTube.

© 2026 Tenmu Inc.