
Share and access study materials worldwide — with AI study tools built in
Share and access study materials worldwide — with AI study tools built in
Coddy records 7,478,457 monthly visits with +17.8% month-over-month growth and Freemium pricing. dende records 38,175 monthly visits with -29.7% growth and Freemium pricing.

Turn your notes into practice quizzes, flashcards and a study plan
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | coddy.tech | dende.ai |
| Pricing Model | Freemium | Freemium |
| Monthly Visits | 7.48M (7,478,457) | 38.18K (38,175) |
| MoM Traffic Delta | +1.13M (+17.8%) | -16.14K (-29.7%) |
| Primary Market & Share | 🇺🇸 United States (15.4%) | 🇮🇹 Italy (36.7%) |
| Direct Visits / mo | 3.13M | 8.14K |
| User Rating | 4.3 | 4.1 |
| 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.

Turn your notes into practice quizzes, flashcards and a study plan
Upload notes, slides or PDFs and get exam-style multiple-choice and open questions generated directly from your material.
Automatically convert your documents into flashcard decks for fast, repeatable active-recall practice.
Get a scheduling calendar that spreads quizzes and flashcards across the days before your exam, and reschedules automatically when you miss a session.
Instead of re-reading the whole document, dende surfaces only the parts you still need to review.

Share and access study materials worldwide — with AI study tools built in
Share and access study materials worldwide — with AI study tools built in
AI flashcards that turn note dumps and PDFs into addictive quiz sessions
AI flashcards that turn note dumps and PDFs into addictive quiz sessions

Delivers structured data science and coding courses with interactive playgrounds, but focuses heavily on data analytics rather than general software engineering.
Free AI flashcard and study tools for students
Free AI flashcard and study tools for students

SpecialistTeaches computer science and logic through visual interactive puzzles and an AI tutor, but lacks traditional text-editor coding playgrounds.
All-in-one IB and MYP exam prep with an AI study partner

AI study tools and a personal tutor built from your own course material
AI study tools and a personal tutor built from your own course material
SpecialistFocuses on hands-on browser-based Linux and DevOps labs with AI guidance, rather than general multi-language programming fundamentals.
SpecialistFocuses on hands-on browser-based Linux and DevOps labs with AI guidance, rather than general multi-language programming fundamentals.

Turn your notes into flashcards that stick
Turn your notes into flashcards that stick
AI study tools plus free A-Level and GCSE exam prep
AI study tools plus free A-Level and GCSE exam prep

Free AI study partner that turns your course material into practice questions, guides and flashcards
Free AI study partner that turns your course material into practice questions, guides and flashcards

Turn your own notes into exam-ready practice
Turn your own notes into exam-ready practice