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10015.io
Code Beautify JSON Validator
FreeFormatter
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A.Tools
Fast developer tools that process your input locally in your browser. No account required.

Memrise
Busuu
Babbel
Rosetta Stone
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Anki
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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.

Which is more popular?
Based on our record, Duolingo seems to be more popular. It has been mentioned 70 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | bittycoder.com | duolingo.com |
| Company | 2026 | Startup from the United States · 500 - 999 employees · 2011 |
| Listed in |
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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.
Duolingo, Memrise, LingoDeer, Busuu, and Babbel are popular choices. Duolingo makes learning fun with games. Babbel designs its interface for each language.
Recommendations tracked on public social media and blogs since March 2021.


Tracking Bitty Coder since Aug 2026.
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: about 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: about 3 years ago
If you want a guided course try Memrise or Duolingo. Source: over 3 years ago
When comparing Bitty Coder and Duolingo, you can also consider the following products.

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Learn a new language with games, humorous chatbots and over 30,000 native speaker videos.
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10015.io is an all-in-one toolbox offering many tools from various categories.
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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 .
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Code Beauty’s JSON Validator or JSON Lint is easy to use tool to copy, paste and validate JSON data.
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Babbel is a paid language learning service that aims to strike a balance between thoroughness and cost efficiency.
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