Trade Kalshi & Polymarket
with an edge.
Live market scoring, cross-platform arbitrage detection, a trade journal that earns its keep, and background alerts — right in your browser. Free analyzer included; unlock the scanner, arbs, journal, and alerts with Pro.
Six tools, one popup.
Open the popup on any Kalshi or Polymarket market and the analyzer runs in milliseconds. Pro unlocks the scanner, arbs, journal, and alerts — everything you need to find and track edges across both platforms.
Market analyzer
Open any market, get a verdict (YES, NO, HOLD) with expected-value cents, payout math, and a confidence rating that cites why — book depth, spread, cross-platform agreement.
Composite edge scanner
Ranks every active market by liquidity, spread, momentum, sweet-spot pricing, and arb bonus. Filter to "arbs only" or "movers" to find what's worth your time in seconds.
Cross-platform arbs
Auto-detects when YES on one platform plus NO on the other sums under 100¢. Surfaces real arbs and near-arbs (where fees might still leave room), with the math shown.
Trade journal
One-click logging from the popup. Tracks entry, exit, P&L, and which platform you traded on. Lifetime stats roll up so you can see what's actually working.
Background alerts
A 15-minute background scan watches your subscribed markets and fires an OS notification when prices cross your threshold. Click the alert, land on the market.
Real 24-hour history
Sparkline shows the last 24 hours from each platform's own candlestick API — not just ticks since you opened the popup. Spot momentum at a glance.
Three steps. Two minutes.
Sign up free
Email + password (or Google). Free tier gives you the analyzer on every market — no card needed.
Install the extension
Add it from the Chrome Web Store. The icon shows up in your toolbar; click on any Kalshi or Polymarket page.
Trade smarter
Read the verdict before you trade. Upgrade to Pro any time to unlock the scanner, arbs, journal, and alerts.
Free to start. Pro when you're ready.
Use the analyzer on every market forever, free. Upgrade to Pro when you want the scanner, arbitrage detection, journal, and background alerts working full-time.
Free
$0 / forever
Everything you need to score one market at a time.
- Market analyzer on every page
- YES / NO / HOLD verdicts with math
- Real 24-hour price history
- Cross-device settings sync
- No scanner, arbs, journal, or alerts
Pro · Monthly
$9.99 / month
Everything in Free, plus the power tools.
- Composite edge scanner
- Cross-platform arbitrage detection
- Trade journal with lifetime stats
- Background alerts (15-min scan)
- Cancel anytime, no questions
Pro · Annual
$69 / year
Two months free vs. monthly. Best value if you trade regularly.
- Everything in Pro Monthly
- Save $51 vs. monthly
- Locked-in price as long as you stay
- Cancel anytime, no questions
Your trading data stays local.
Your account only tracks your subscription and license. The extension still talks directly from your browser to Kalshi and Polymarket — your API keys, your trade journal, and your market data never go through our servers.
- ✓ Trade journal and API keys stay in chrome.storage.local on the device you entered them on
- ✓ Kalshi private keys sign requests locally — never transmitted to us
- ✓ Account data (email, subscription status) sits in Supabase — used only for login + billing
- ✓ Market data is pulled directly from Kalshi, Polymarket, and Google News RSS
- ✓ No telemetry, no behavioral analytics, no data sold to anyone
Full privacy policy · terms of use