jidoujisho vs Readlang

jidoujisho brings video playback, reading, dictionary lookup and flashcard creation into an Android language-learning app. It handles local media, YouTube videos, Jellyfin streams and direct URLs, with word lookup by tapping or dragging across subtitles and paragraphs. Readers can open offline books in the embedded ッツ Ebook Reader or read manga processed with Mokuro. For study cards, users can edit fields and export the current image and audio to AnkiDroid. Dictionary support covers Yomichan, Migaku and ABBYY Lingvo DSL formats; dictionary data is not bundled, and Yomichan structured-content dictionaries are unsupported. Listed services include ChatGPT, Bing image search, Forvo, JapanesePod101 audio search, and example sentences from Massif, Tatoeba and ImmersionKit. WebSocket support allows use with texthookers. Japanese and English are officially supported; other languages depend on dictionary format and search support. jidoujisho is free and open source under GPL-3.0. It requires Android 7.0 or later and AnkiDroid. External subtitles include SRT, ASS and SSA, but not image-based PGS.

Readlang is a reading tool for language learners who want to work with native content. Readers can select words or phrases in text and webpages to see translations, and contextual AI explanations help clarify them. Translated material can be turned into flashcards that use spaced repetition and prioritize useful words. Users can read articles and books, paste text, upload files, or bring webpages in through a browser extension or bookmarklets. The video player supports full transcriptions, including transcripts uploaded and synced to YouTube videos. A popup dictionary is available in the Web Reader, while the online eReader has a sidebar dictionary; collected words and phrases can also be exported to Anki. Readlang lists web, Android, iOS, and extension platforms, but says it has no native mobile apps. The web app can be added to a mobile device’s home screen. The Free plan is free and allows unlimited single-word translations, with 10 phrase translations and 10 contextual explanations per day. Premium is $6 a month, billed at $6 / month or $48 / year.