# Shiberu — Learn From Your Shows > Learn vocabulary from videos and texts using spaced repetition flashcards. (iPhone/iPad app by Shiberu.) - Source: https://appshunter.io/ios/app/shiberu/id6823944704 (this page in markdown: same URL + `.md`) - Developer: [Shiberu](https://appshunter.io/developer/6823944706) - Category: Education, Reference - Price: Free - Rating: 5.00/5 from 1 App Store ratings - Age rating: 12+ - Requires: iOS 16.4 · 76 MB - Languages: American English, Japanese, Korean, Chinese (Simplified, China), European Spanish, Chinese (Traditional, Taiwan) - Released: 2026-10-23 - Data updated: 2026-11-10 - Monetization: free ## What is Shiberu? Shiberu turns the shows you watch into flashcards, and puts a full spaced-repetition reviewer on your iPhone and iPad. MINE FROM WHAT YOU WATCH With the free Shiberu browser extension for Chrome and Firefox on your computer, click any subtitle word on YouTube, Netflix, Crunchyroll, Viki, Bilibili or any HTML5 video, or load your own .srt, .ass or .vtt file. Shiberu fills in the reading, meaning, sentence and audio. Save the card and it is waiting in this app for your next review. A FULL FLASHCARD REVIEWER • FSRS-6, the modern spaced-repetition scheduler • Deck option presets, :: subdecks, a card browser and custom study • Timers, auto-advance and Again / Hard / Good / Easy • Your own note types and card templates, with images and audio STUDY OFFLINE Download a deck once and review it without a connection, on the subway or on a plane. Your progress syncs when you are back online. BRING YOUR DECKS • Import .apkg decks with their full review history. Shiberu replays every review through FSRS, so your cards stay on schedule instead of starting over. • Export any deck back to .apkg at any time. No lock-in. • Study on your computer too: link decks with the free Shiberu Sync add-on for desktop Anki (25.07 or later) and they stay in step both ways: reviews, due dates, deck option presets, note edits and media. SHARE DECKS Share a deck with your friends or publish it for every learner, subdecks included. Whoever adds it gets the whole subdeck tree with every card. LANGUAGES Japanese, Korean and Chinese get full readings and dictionaries. Any other language gets AI explanations of words in context. READ, NOT JUST REVIEW The Reader opens texts you paste or import: EPUB, PDF, Word, HTML, Markdown, plain text and subtitle files. Or start with its built-in graded stories in Japanese, Korean and Chinese. Tap a word to look it up and turn it into a card. STAY ON TRACK • A day-streak widget for your Home Screen: your Shiba grows stronger every day you study, and freezes if you stop • Study reminders, streaks and a vocabulary garden that grows as you learn • Forest, Light and Dark themes • Interface in English, 한국어, 日本語, Español, 简体中文 and 繁體中文 NO SUBSCRIPTION, NO ADS Everything in Shiberu is free: no subscription, no in-app purchases and no ads. Sign in with Apple, Google or email, and your account syncs between this app and the web app at shiberu.app. Shiberu is an independent app and is not affiliated with or endorsed by Ankitects (Anki), Netflix, YouTube, Crunchyroll, Viki or Bilibili. Questions? support@shiberu.app ## Key features - Flashcard creation from video subtitles - Spaced repetition review system (FSRS-6) - Offline study mode - Import and export flashcard decks (.apkg) - Integrated reader for various text formats - Vocabulary garden and study streak widget ## Is Shiberu safe? Not enough ratings yet to assess Shiberu. ## Is Shiberu legit? Shiberu has limited verification signals. The AppsHunter Legitimacy Score for Shiberu is 58 out of 100 points across 7 verification signals from App Store and developer data. ## Frequently asked questions about Shiberu ### How does Shiberu help me learn languages? Shiberu creates flashcards from words you encounter in videos or imported texts. It uses a spaced repetition system to schedule reviews, helping you memorize vocabulary efficiently over time. ### What video platforms does Shiberu support? Shiberu works with a browser extension to mine words from YouTube, Netflix, Crunchyroll, Viki, Bilibili, and any HTML5 video. You can also load your own subtitle files (.srt, .ass, .vtt). ### Can I study with Shiberu offline? Yes, you can download decks and study them without an internet connection. Your progress will sync automatically once you are back online. ### Does Shiberu have ads? No, Shiberu is completely free with no advertisements. The app is designed to be ad-free and does not include any in-app purchases or subscriptions. ### How does Shiberu's spaced repetition work? Shiberu utilizes FSRS-6, a modern spaced repetition algorithm. This system optimizes review intervals based on your performance, ensuring you review cards at the most effective times. ### Can I use my existing Anki decks with Shiberu? Yes, Shiberu allows you to import .apkg decks, including their full review history. It replays reviews through FSRS to maintain your learning schedule. ### What devices is Shiberu available on? Shiberu is available on iPhone and iPad devices. Your progress and decks sync across these devices and the web app. ### How often is Shiberu updated? The latest version, 1.2.54, was released on November 1, 2026. Updates are frequent, ensuring the app remains reliable and feature-rich. ## Version history (last 5 releases) ### 1.2.56 — 2026-11-08 New in this version: • Cantonese: dictionaries with Jyutping, including words.hk 粵典 • Many more meanings in your own language, from new dictionaries • Long meanings in other languages are shown in full • Saved lookups update when a dictionary does, and still work offline • Tap a meaning in the word sheet to put it on your card; a card never loses its meaning • Chinese readings follow the sentence (得, 地, 长…) • Rate Shiberu from Profile ▸ Support; the app language follows your choice ### 1.2.55 — 2026-11-06 New in this version: • Folders: group your decks on the Decks page (deck menu ▸ Move to folder) • Big deck downloads finish reliably. Details lists any file that didn't arrive, with Check again, and the app tells you when your phone's storage is full • The whiteboard works on cards imported from Anki, and drawing no longer swipes you out of the session • Folded iPhone Duo: a card's own background now fills the screen • The card count on Home and the stats chart now agree • No more "reviewed elsewhere" banners during study • Faster studying, and the reader reopens where you left off • If the app crashes, it sends us a short anonymous error report so we can fix it ### 1.2.54 — 2026-11-01 A fresh new look: a calmer Home, a clearer study screen, a new Decks page and a Garden that grows with what you learn. New in this version: • Tap a day in This week to see what you studied • New to a language? Start with a shared deck right from Decks, including Shiberu Hiragana and Katakana • The level test now works like a card: see the word, show the answer, then say if you were right • Faster with big libraries: opening decks, Stats and Home • Fixes for the Reader getting stuck at the end of a chapter, signing out and more ### 1.2.52 — 2026-10-27 Look up words from any app: select text, then tap Translate (with Shiberu as your translation app) or Share > Look up in Shiberu. Tap a word on a card's front to look it up. Home counts new cards right for decks with subdeck limits. A caught-up screen with today's stats. Reader: books read as one document with a contents menu, comics with page layouts, original styling kept, and a real ending with book stats, known words before vs now, and Mark as not finished. New: My words, a Dictionary page, a choice of dictionaries and a settings cog in the word popup. ### 1.2.51 — 2026-10-24 • Reader: a new home that puts the library first, a book you dream of reading turned into a study plan, and words you look up feeding your flashcards. • PDF page mode shows just the page, full screen; tap for controls. • Read books in more languages, with suggestions for the language you pick. • Smoother Decks and Garden headers with a language menu. • Fixes and speed improvements. --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-11-10.*