🚀
Build 15 Web Apps with AI in 30 Days
Challenge yourself to ship 15 production-ready web apps in 30 days using AI tools like Claude, ChatGPT, v0, Lovable, and Warp.

The Rules:

  • Ship 15 functional web apps
  • Use AI tools for development
  • Complete in 30 days
  • Make them public (GitHub + live site)

No sign-ups. No tracking. Just build.

René's Challenge:

✅ 15/15 COMPLETED

Below are the 15 apps I built to complete this challenge.

The 15 Apps

Each app is production-ready, open-source, and built with AI-assisted development.

🖼️
#1/15
SVG to PNG
Convert SVG files to PNG
Made with:
Claude
ChatGPT
📧
#2/15
Email Preview
Preview HTML emails
Made with:
Claude
ChatGPT
📡
#3/15
RSS Feed Reader
Read top RSS feeds
Made with:
Claude
ChatGPT
🔍
#4/15
DMARC Domain Checker
Check DMARC records
Made with:
Claude
ChatGPT
📨
#5/15
Email Headers Analyzer
Analyze email headers
Made with:
Claude
ChatGPT
✉️
#6/15
Email Subject Line Tester
Test your email subject lines
Made with:
Claude
ChatGPT
💬
#7/15
Quotes Collection
Browse a collection of inspirational quotes
Made with:
Claude
ChatGPT
🌍
#8/15
Country Explorer
Learn about and compare countries
Made with:
Claude
ChatGPT
🎨
#9/15
Color Picker
Pick and explore colors
Made with:
Claude
ChatGPT
📚
#10/15
Book Recommendations
Create and share reading lists easily
Made with:
Claude
ChatGPT
⏲️
#11/15
Pomodoro Timer
A simple, beautiful pomodoro timer
Made with:
Claude
ChatGPT
📝
#12/15
Agenda Planner
Create an agenda with a built-in timer and export to PDF
Made with:
Claude
ChatGPT
🤓
#13/15
HN Enhanced
Explore the latest tech news and jobs with this modern client
Made with:
Claude
ChatGPT
📓
#14/15
Git Repo Explorer
Search GitHub repos with AI keyword detection
Made with:
Claude
ChatGPT
🎉
#15/15
Event Countdown
Create countdowns for things you're looking forward to
Made with:
Claude
ChatGPT

Ready to Take the Challenge?

Start building your 15 apps today. Use AI tools to ship faster, learn more, and build a portfolio of real products.