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MarketMaster

Find real Kalshi vs Polymarket edges, after fees

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MarketMaster matches the same event across Kalshi and Polymarket, checks both venues' settlement rules, and ranks price gaps after fees, so you only see edges you could actually take. Free scanner, alerts, a trade journal, and a free API + MCP server.

PH · launched Sep 22, 2026 · 1 upvote (top 69%) · 0 views

Niche: stock and market analysis software · 355 launches, 42 in the last 7 days ▲ +11% · Explore this niche →

Category and tags
  • Fintech
  • Analytics & BI
  • Prosumer
  • Not AI
  • Commercial product
  • Fintech
  • Developer Tools
  • Artificial Intelligence

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More like this: all 355 launches in stock and market analysis software →

Could you build this?

Yes The service polls public APIs from Kalshi and Polymarket, matches related market questions via vector similarity or LLM prompts, and computes the mathematical spread minus documented fees.

Competitors

Other products that read as similar to this one : 101 launches clear the similarity bar, closest 8 shown.

Attention rank: #83 of 102 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).

Launched 75 days after the earliest competitor.

  • ArbTrader · ph · 2026-10-29 · 1 upvotes · similarity 0.58
  • Layer · hn · 2026-10-08 · 5 upvotes · similarity 0.51
  • prediction-market-arbitrage-trading-bot · github · 2026-09-27 · 25 upvotes · similarity 0.47
  • PMWallets · ph · 2026-10-10 · 1 upvotes · similarity 0.47
  • synpath · github · 2026-09-28 · 34 upvotes · similarity 0.46
  • Blink Markets · ph · 2026-09-10 · 1 upvotes · similarity 0.45
  • kalshi-trading-bot · github · 2026-09-17 · 51 upvotes · similarity 0.44
  • Kumo Edge · ph · 2026-10-13 · 2 upvotes · similarity 0.43

Related data

The niche, labels, vibe code rating and competitor comparison on this page are analysis by Nicheloom. If you use them, please credit nicheloom.com. How you may use our data.