GitHub Spark vs. Replit - Vibe Code Challenge

Snyk

Mar 30, 2026

We pit GitHub Spark (in public preview) against Replit's AI agent. The challenge? Build a fully functional community forum for DIY tips from a single prompt. We compare design aesthetics, mobile responsiveness, login security, and deployment speed to see which tool creates a truly production-ready application.

Which one do you think deserved the win? Let me know in the comments!

Use Snyk for free to find and fix security issues in your applications today! https://snyk.co/ugLYn

✍️ Resources ✍️

GitHub Spark: https://github.com/spark
Replit Agents: https://replit.com/ai

⏲️ Chapters ⏲️

00:00 Finding the Best Vibe Coding Platform

00:29 GitHub Spark vs. Replit

00:47 The Prompt: Building a DIY Community Forum

01:18 GitHub Spark Pricing & Public Preview Notes

01:58 Initial Results

02:44 Design Comparison

03:31 Mobile Responsivenesss

05:01 Comparing Preview & Live Testing Capabilities

06:54 Functionality Test: User Posts and Comments

09:05 Deployment & Publishing Workflow

10:48 Security Scans

11:21 Advanced Features

13:13 The Final Verdict

⚒️ About Snyk ⚒️

Snyk helps you find and fix vulnerabilities in your code, open-source dependencies, containers, infrastructure-as-code, software pipelines, IDEs, and more! Move fast, stay secure.

Learn more about Snyk: https://snyk.co/ugLYl

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