Codex4: Learn Vocabulary Easily
Add your own words. Then learn them in context.
Codex4: Learn Vocabulary Easily launched on April 19, 2025 with 12 votes, #2,465 of 7,818 launches that month and more than 75% of that year's launches. The site was still online in September 2026, 1 year on.
What it does
Learn YOUR OWN words naturally in context. Our system automatically extracts words from any text and lets you learn them in context in their various inflections and conjugations.
Create personalized vocabulary lists and learn words naturally through context.
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Personalized Duolingo (kind of) for vocabulary building2025 · github.com · ▲161Hi! Wanted to share the project I really wanted to have. TLDR; this app lets you create your own list of words and you get a Duolingo-like experience (kind of, still needs a lot of features) practicing those words in their context. My English is not the best but not the worst either. But I realized I can't boost it up after a certain level! In my belief, in order to truly learn a language, you need to be exposed to that language often. Vocabulary is the key factor here if you really want to improve in any language. My experience is that when I read a book to improve my English vocabulary, I…
Word Learn: Study Vocabulary2021 · play.google.com · ▲3Systematize your studies and create your own lists of words
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