Coddy records 7,478,457 monthly visits with +17.8% month-over-month growth and Freemium pricing. Marble - LeetCode Tutor records 0 monthly visits with — growth and Free pricing.
Learn to code free with hands-on lessons and instant playgrounds
An AI tutor that walks you through LeetCode problems instead of solving them for you
| Dimension / Metric | | |
|---|---|---|
| Official Domain | coddy.tech | chromewebstore.google.com |
| Pricing Model | Freemium | Free |
| Monthly Visits | 7.48M (7,478,457) | 0 (0) |
| MoM Traffic Delta | +1.13M (+17.8%) | 0 (—) |
| Primary Market & Share | 🇺🇸 United States (15.4%) | 🌐 Global (—) |
| Direct Visits / mo | 3.13M | 0 |
| User Rating | 4.3 | 4.2 |
| Supported Platforms | Website | Browser Extension |
Learn to code free with hands-on lessons and instant playgrounds
Short, practice-first coding lessons that run directly in your browser, so you can start learning without installing a compiler or development environment.
Dedicated playgrounds for Python, JavaScript, C, C++, Java, SQL, React, Go, Swift and many other languages let you test snippets and experiment immediately after each lesson.
Structured curricula such as Software Engineer, Frontend, Full Stack, Backend, Data Analyst, Data Scientist, DevOps and game development bundle the skills employers actually ask for.
Streak-style daily coding challenges and progress tracking help learners build a consistent habit and stay motivated between longer courses.
An AI tutor that walks you through LeetCode problems instead of solving them for you
Open any LeetCode problem and Marble follows a structured three-stage routine: understand the problem, build a plan, then implement it. The flow mirrors what interviewers expect to hear in a technical screen.
Help is generated in the language of your choice, so you can keep solving in Python, Java, C++, JavaScript, Go, or whichever stack you interview in.
Marble coaches rather than solves, nudging you toward the right data structure or edge case instead of pasting a finished solution, which reinforces pattern recognition over time.
Activate the tutor from a small pin button directly on the LeetCode problem page, with no separate dashboard or tab juggling.
Free / Open-sourceWrite code with precision, hand bigger jobs to agents, and keep working from anywhere
Free / Open-sourceWrite code with precision, hand bigger jobs to agents, and keep working from anywhere
Delivers structured data science and coding courses with interactive playgrounds, but focuses heavily on data analytics rather than general software engineering.
SpecialistTeaches computer science and logic through visual interactive puzzles and an AI tutor, but lacks traditional text-editor coding playgrounds.
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Real-time AI interview copilot and prep coach in one platform
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SpecialistYour personal AI tutor — generate a course on anything in seconds
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Undetectable AI assistant for live technical interviews
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Desktop and mobile AI copilot that feeds live answers during coding and system design interviews
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Free / Open-sourceOpen-source, self-hosted AI coding agent that codes like you
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