Paglyph is a vocabulary companion for people who read in English, especially non-native speakers and language learners. Paglyph helps you understand, save, and review the words you find while reading. Simply by take a photo of a page, tap a word, and see what it means in that sentence.
You can also build your personal vocabulary flashcards library and learn them through FSRS.
For novels, textbooks, and whatever you're reading next.