Your personal guide to modern astrology
Your personal guide to modern astrology
Coddy records 7,478,457 monthly visits with +17.8% month-over-month growth and Freemium pricing. Stardust records 38,292 monthly visits with -4.1% growth and Free pricing.

Track your cycle with science, and a little astronomy
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | coddy.tech | stardust.app |
| Pricing Model | Freemium | Free |
| Monthly Visits | 7.48M (7,478,457) | 38.29K (38,292) |
| MoM Traffic Delta | +1.13M (+17.8%) | -1.66K (-4.1%) |
| Primary Market & Share | 🇺🇸 United States (15.4%) | 🇺🇸 United States (49.1%) |
| Direct Visits / mo | 3.13M | 7.11K |
| 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.

Track your cycle with science, and a little astronomy
Log and predict your menstrual cycle, with insight into the phases that shape your energy and mood across the month.
Identify your fertile window with ovulation predictions built on your own logged data rather than a generic calendar.
Track pregnancy week by week alongside your cycle data in the same app.
See how your hormones shift across the cycle and what each phase means for how you feel.
Your personal guide to modern astrology
Your personal guide to modern astrology

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.
SpecialistFocuses on hands-on browser-based Linux and DevOps labs with AI guidance, rather than general multi-language programming fundamentals.

A supplement tracker and optimizer that scores product quality and your whole stack
A supplement tracker and optimizer that scores product quality and your whole stack

SpecialistKhan Academy's AI tutor and teaching assistant for guided, Socratic learning
SpecialistKhan Academy's AI tutor and teaching assistant for guided, Socratic learning
SpecialistYour personal AI tutor — generate a course on anything in seconds
SpecialistYour personal AI tutor — generate a course on anything in seconds
AI that reads your lab results and explains what they actually mean
AI that reads your lab results and explains what they actually mean
SpecialistConverts syllabi into interactive computer science labs and exams, but lacks Coddy's casual bite-sized curriculum.
SpecialistConverts syllabi into interactive computer science labs and exams, but lacks Coddy's casual bite-sized curriculum.

Escape tutorial hell by building real, portfolio-ready projects
Escape tutorial hell by building real, portfolio-ready projects
Life and health tracking with an AI coach built around your data
Life and health tracking with an AI coach built around your data

Health intelligence infrastructure for nutrition and metabolic data
Health intelligence infrastructure for nutrition and metabolic data