Eventarb logo

Eventarb

Free

A free tool for calculating and alerting cross-platform arbitrage opportunities in prediction markets like Polymarket, Kalshi, and Robinhood.

Screenshot of eventarb.com
Our screenshot of eventarb.com, captured 2026-09-04 — how the service looked that day, not an endorsement.
Eventarb — their own banner
Eventarb's own banner, as their site publishes it.

At a glance

Categories
Arbitrage
Venues
Kalshi, Polymarket
Reached through
Not stated
Pricing (directory label)
Free
Listed in
3 directories
Site
eventarb.com

Features

As published by the directories that list it — not verified by us.

Simple Arbitrage CalculatorCross-market supportIn-market and multi-option analysisAlerts and notificationsTransparent math calculationsAnnualized and principal-based returns

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Rating
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