Read English on your own — without translating everything.
Wonderline is a reading and vocabulary app for reading English articles, books, PDFs, and audio without relying on full translation. Instead of having AI translate everything for you, you look up only the words and phrases you don't know, grasp their meaning, and read the English yourself — building real reading ability over time.
Bring in English from many sources: photograph printed books (OCR), PDFs, web articles, pasted text, and transcriptions of audio/video files. As you read, tap any word to see its meaning (switch between Japanese and English-to-English definitions). Words you pick up collect in your Words list.
All recognition and translation run on your device. No ads, no account required.
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