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Spread Inefficiency
On Kalshi, YES+NO should sum to 1.00. Deviation between the order book mid and 1.00 means one side is mispriced. Instantly exploitable.
FREE
Kalshi·Polymarket · 300+ markets scanned
Trade Prediction Markets
With an Actual Edge
14 quantitative signals scan live Kalshi & Polymarket markets every 5 minutes — calibration bias, crypto price lag, volume surges, spread inefficiency, smart-money flow, and Kalshi↔Polymarket cross-platform arb (Pro).
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Kalshi & Polymarket
8 Quantitative Edge Signals
Every Kalshi market scored across 14 signals. Here are the top free + Pro signals — composite score tells you where the edge is.
📈
Volume Surge
24h Kalshi volume spiking relative to open interest means informed traders are active right now.
FREE⏱
Near-Expiry Entropy
Kalshi markets expiring within 7 days near 50/50. Maximum information edge per dollar per hour.
FREE📰
News Sentiment
Fresh catalysts cross-referenced with Kalshi mid-price. Reacts before the order book does.
FREE🎯
Calibration Bias
YES contracts are systematically overpriced across Kalshi price levels — a persistent edge to NO.
PRO⚡
Crypto Price Lag
Log-normal model vs actual BTC/ETH/SOL spot. Finds Kalshi crypto markets the algorithm hasn't caught up with.
PRO🔀
Cross-Platform Arb
Kalshi ↔ Polymarket. Kalshi YES + Polymarket NO < 1.0 = guaranteed profit at settlement (Pro, when Polymarket enabled).
PRO📐
Kelly Sizing
Mathematically optimal position size per signal. Maximise long-run growth, avoid ruin.
PROSimple Pricing
Trusted by 1,200+ prediction market traders
Kalshi-focused edge scanner. Start free. Upgrade when you find your first edge.
Free
$0/mo
- ✓ Top 5 markets by score
- ✓ Basic edge scores
- ✗ Signal breakdown detail
- ✗ Crypto lag / arb signals
- ✗ Kelly position sizing
- ✗ Email alerts
- ✗ Auto-refresh
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Pro
$29/mo
3-day free trial · cancel anytime
- ✓ All 300+ live markets
- ✓ Full signal breakdown
- ✓ Crypto lag + cross-platform arb
- ✓ Kelly position sizing
- ✓ Email alerts (custom threshold)
- ✓ Auto-refresh every 5 min
- ✓ Priority signal ranking
Pro Annual
$199/yr
Save $149/yr · That's 4.3 months free
- ✓ Everything in Pro
- ✓ Priority support
- ✓ Early access to new signals
- ✓ Rate locked forever
All Pro plans start with a 3-day full-access trial. Cancel before it ends — no charge.
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30-Day Money-Back Guarantee
Not satisfied? Email us within 30 days of your first payment for a full refund. No questions asked.
Frequently Asked Questions
How does the edge score work?
The edge score combines 14 quantitative signals: spread inefficiency, volume surge, near-expiry entropy, crypto price lag, cross-platform arbitrage, Kelly sizing, EV optimization, calibration bias, longshot detection, retail spread, twin-gap arbitrage, smart-money flow, time-of-day edge, maker execution, and news sentiment. Each signal scores 0-30 points, giving a composite score of 0-100.
What is calibration bias?
Calibration bias is a signal based on academic prediction-market research showing that YES contracts are systematically overpriced across nearly all price levels — the actual win rate is lower than the implied probability. This creates a persistent edge to buying NO or selling YES, especially in the mid-range where no other signal fires. Our signal sharpens automatically using resolved-market history as it grows.
What prediction markets do you cover?
Primary: all open Kalshi markets (300+) — a CFTC-regulated Designated Contract Market. Optional: Polymarket is used only for Kalshi↔Polymarket cross-platform arbitrage (Pro feature, off by default). Markets are updated every 5 minutes with fresh prices and volumes. The free tier shows top 5 Kalshi markets by score; Pro shows the full Kalshi universe.
Can I cancel anytime?
Yes. There are no long-term contracts. Cancel your subscription at any time from your account settings. The trial requires no card, and recurring plans can be cancelled before renewal.
Is my data private?
Yes. We use industry-standard encryption (TLS 1.2+) for all data in transit. Your account data is stored in a secure SQLite database with no third-party access. We never share your email, portfolio, or alerts with anyone.
Do you offer refunds?
Yes. We offer a 30-day money-back guarantee on your first Pro payment. If you're not satisfied, email us for a full refund with no questions asked.