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Tools to save and review new words

The problem, in plain words: “I want an app that saves words I look up while reading and helps me remember them using spaced repetition.”

Polyglot Reader fits best, with 3 more that fit too.

You want a reading companion app that captures vocabulary you look up and uses spaced repetition to help you remember it later.

Updated September 2026.

What fits

Polyglot Reader logo
Polyglot Readerstrong · 83

It’s designed for reading in a foreign language and explicitly turns unknown words you encounter into flashcards you’ll remember, using spaced repetition to keep those words from being forgotten.

Best for: Turning unknown words from your reading into spaced-repetition flashcards so they stick.

Same approach: QiYan 80 · Yidu English Reader 78 · Shiyu 77

Partly fits

Foliolepartial · 60

It’s focused on spaced repetition through an incremental reading workflow, but it’s more about extracting passages/cloze deletions from what you read than explicitly capturing looked-up vocabulary words.

Won’t cover: It focuses on spaced repetition for extracted reading passages rather than specifically capturing vocabulary from word lookups during reading.

Library Notespartial · 56

It uses spaced repetition tied to notes you record from reading, but it doesn’t clearly center on capturing dictionary lookups as the primary input.

Won’t cover: It’s built around writing down quotes and observations with spaced repetition, not specifically saving words you look up.

Windapartial · 53

It turns study material into spaced-repetition questions/flashcards, but the description doesn’t specifically promise the “look up a word while reading” capture loop you asked for.

Won’t cover: It focuses on turning study material into spaced-repetition flashcards rather than saving vocabulary from in-reading dictionary lookups.

LookUp: English Dictionary Apppartial · 49

It strongly supports vocabulary collection and spaced-repetition quizzes, but the core flow is positioned more as a dictionary/word-collections app (including a Word of the Day) than as a reading companion that captures words you look up while reading.

Won’t cover: It emphasizes dictionary-style vocabulary collections and quizzes rather than a reading workflow that captures your word lookups as you read.

Questions

What's the best tool to save and review new words?

Polyglot Reader is the strongest match — It’s designed for reading in a foreign language and explicitly turns unknown words you encounter into flashcards you’ll remember, using spaced repetition to keep those words from being forgotten.

Is there a tool that fully solves this?

4 products match this closely.

What won't these tools cover?

It focuses on spaced repetition for extracted reading passages rather than specifically capturing vocabulary from word lookups during reading. · It’s built around writing down quotes and observations with spaced repetition, not specifically saving words you look up. · It focuses on turning study material into spaced-repetition flashcards rather than saving vocabulary from in-reading dictionary lookups. · It emphasizes dictionary-style vocabulary collections and quizzes rather than a reading workflow that captures your word lookups as you read.

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