DualDev

Real-time 1v1 coding live battles with an AI judge

8 followers

Real-time 1v1 coding live battles with an AI judge

8 followers

DualDev is a real-time 1v1 coding battle platform — two developers, same problem, live timer. What makes it different: → Opponent Silhouette — see your opponent's code structure masked as ▓▓▓ blocks. Spot if they're using a hashmap or brute force, without seeing their actual code. → AI Judge — evaluates both solutions at match end on correctness, efficiency, and code quality. → ELO matchmaking — rated queue with topic & difficulty filters, plus friend rooms.

Free

Launch tags:Productivity•Open Source•Developer Tools

Launch Team

Render: Get up to $100K in startup creditsCloud infrastructure for founders who want to move fast and NOT break things

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Maker

📌

Hey hunters! 👋 I'm Cench, a CS undergrad who built DualDev as a solo project. The core idea: competitive programming is usually solo — you submit, wait, get a verdict. DualDev makes it a live duel. The opponent silhouette mechanic is the centerpiece — you see your opponent's code masked in real-time (keywords visible, identifiers hidden), so you get just enough pressure without it being a copy-paste race. Stack: React + Vite, Node.js + Socket.io, BullMQ, two Redis instances, AWS Lambda for code execution, and Groq's llama-3.3-70b as the AI judge. Would love feedback — especially on the silhouette mechanic and matchmaking. What would make you actually use this to practice?

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5mo ago

Maker

Built this solo during my final year of college. Would love to know what you think of the silhouette mechanic — drop your feedback below!

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5mo ago

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