
Delivers structured data science and coding courses with interactive playgrounds, but focuses heavily on data analytics rather than general software engineering.

Coddy records 7,478,457 monthly visits with +17.8% month-over-month growth and Freemium pricing. Lemmi records 0 monthly visits with -100% growth and Freemium pricing.
AI mock interviews with feedback you can act on
| Dimension / Metric | ||
|---|---|---|
| Official Domain | coddy.tech | lemmi.io |
| Pricing Model | Freemium | Freemium |
| Monthly Visits | 7.48M (7,478,457) | 0 (0) |
| MoM Traffic Delta | +1.13M (+17.8%) |
| -2.33K (-100%) |
| Primary Market & Share | 🇺🇸 United States (15.4%) | 🌐 Global (—) |
|---|
| Direct Visits / mo | 3.13M | 0 |
|---|
| User Rating | 4.3 | 4.2 |
|---|
| Supported Platforms | Website | Website |
|---|
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.
AI mock interviews with feedback you can act on
Practice interviews built from your background, with questions designed to mirror the kind of conversation a real interviewer would have with you.
Clear notes on what you did well and what needs fixing, rather than generic advice that applies to everyone.
Converts your feedback into a prioritised roadmap so each practice session has a concrete next step.
Short exercises that focus on the specific weak areas surfaced in your previous attempts, so improvement is measurable.

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.

SpecialistFocuses on hands-on browser-based Linux and DevOps labs with AI guidance, rather than general multi-language programming fundamentals.
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SpecialistFocuses on hands-on browser-based Linux and DevOps labs with AI guidance, rather than general multi-language programming fundamentals.
Instant AI feedback on your resume and LinkedIn profile
AI resume builder that tailors your resume to the job description
AI-powered resume scoring, skill insights and interview feedback for data-driven career preparation
End-to-end career services with AI tools to land your next role
AI career copilot for resumes, LinkedIn, and the whole job hunt
An AI career platform for resumes, cover letters, LinkedIn and interview prep
SpecialistKhan Academy's AI tutor and teaching assistant for guided, Socratic learning
SpecialistYour personal AI tutor — generate a course on anything in seconds
Free AI job matching, resume building and interview prep