Bai Wordbook / バイ単語帳 is a cute offline vocabulary notebook for saving, reviewing, and tracking English words. Add phonetics, meanings, examples, notes, tags, and familiarity, then practice with flashcards, weak-word review, and local statistics. The app supports OCR/import for turning text into study entries and stores study notes locally without required login. Camera permission is used for OCR capture. Internet and network state access may support OCR-related components or app services. No location, microphone, contacts, SMS, phone, notification, accessibility, VPN, or overlay permission was observed.