
Memrise
Busuu
Babbel
Anki
Lingvist
Rosetta Stone
Mondly
Duolingo is a free language learning app for iOS, Windows and Android devices. The app makes learning a new language fun by breaking learning into small lessons where you can earn points and move up through the levels. Read more about Duolingo.

Claude Code
Cursor
GitHub Copilot
Claude for Desktop
ChatGPT
opencode
OpenClaw
Codex is a VS Code extension that allows any engineer to attach comments, questions or any kind of content to specific lines of code.

Which is more popular?
Based on our record, Duolingo seems to be a lot more popular than Codex. While we know about 70 links to Duolingo, we've tracked only 1 mention of Codex.
Website, pricing, platforms and company facts side by side.
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| Website | duolingo.com | usecodex.com |
| Company | Startup from the United States · 500 - 999 employees · 2011 | — |
| Listed in |
What each product offers, as listed by its team.


Possible disadvantages
Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
No analysis of Codex yet.
Walkthroughs and reviews on video.
Duolingo Review: Does it really work?
More videos
No Codex videos yet. You could help us improve this page by suggesting one.
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using Duolingo and Codex. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


For AI conversation practice, Duolingo Max is the tier to choose, and we'd call it a useful upgrade only if those extra features matter to you. It sits above the paid Super Duolingo tier rather than directly above the...
Our team of dedicated writers and language enthusiasts is committed to bringing you insightful content and expert advice to enhance your Duolingo experience. From language-learning tips to in-depth analyses of...
Language learning apps such as Duolingo, Babbel and others have millions of registered users worldwide. Duolingo alone has over 300 million registered users.
We have no reviews of Codex yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


Duolingo: a language-learning app that uses points, levels, and rewards to keep you motivated. This is the most effective when you do it with your friends or a group of people who share your learning goals. I got really addicted to... Source: over 3 years ago
Hi! I wish I'd seen a post like this a few months ago. I would have been interested then. By now it's a little late for me. I just signed up for the 2 week free trial since that's about all the time I have left before I leave. If you... Source: over 3 years ago
If you want a guided course try Memrise or Duolingo. Source: over 3 years ago
Our company, Codex, is live on Product Hunt now and we'd love your support via an upvote! - Source: dev.to / over 4 years ago
When comparing Duolingo and Codex, you can also consider the following products.

Learn a new language with games, humorous chatbots and over 30,000 native speaker videos.
Compare Memrise to Duolingo or Codex:

Transform hours of debugging into seconds with a single command. Experience coding at thought-speed with Claude's AI that understands your entire codebase—no more context switching, just breakthrough results.
Compare Claude Code to Duolingo or Codex:

Join the global language learning community, take language courses to practice reading, writing, listening and speaking and learn a new language. Learn English with busuu's .
Compare Busuu to Duolingo or Codex:

The AI-first Code Editor. Build software faster in an editor designed for pair-programming with AI.
Compare Cursor to Duolingo or Codex:

Babbel is a paid language learning service that aims to strike a balance between thoroughness and cost efficiency.
Compare Babbel to Duolingo or Codex:

Your AI pair programmer. With GitHub Copilot, get suggestions for whole lines or entire functions right inside your editor.
Compare GitHub Copilot to Duolingo or Codex: