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Paper trading · Polymarket
Best Paper Trading Simulator for Polymarket
PredictMirror mirrors every Polymarket order book so you can simulate trades, build conviction, and track P&L, with $1,000 in virtual capital. No wallet. No real money. No account required.
polymarket.com/event/bitcoin-up-or-down-may-7
Works on
Polymarket·Kalshi (soon)·Manifold (soon)
Paper trading prediction markets in three steps
PredictMirror lives inside your browser. It wakes up when you visit Polymarket and gets out of the way when you don't.
Open any market
Browse Polymarket as you normally would. The PredictMirror panel slides in beside any event page: sports, crypto, politics.
Mirror your trade
Pick a side, set an amount, hit Mirror. Your simulated position fills at the live order book price and tracks every tick in real time.
Everything you need to learn how to paper trade on Polymarket
Built for traders who want to test conviction before they risk capital. Designed to disappear into Polymarket so you can focus on the trade.
Live order book mirror
Real Polymarket prices, refreshed continuously. Your simulated trades fill at the actual market price, with realistic slippage modeled in.
$1,000 virtual capital
Start with a thousand virtual dollars. Reset your balance anytime. Test new strategies from scratch as often as you'd like.
Real-time P&L
Every position tracks the market live. Sparklines on the portfolio view, full area charts with fill history on the detail view.
Win streaks & edge
Track your win rate, current streak, and the edge you're capturing versus market consensus. Learn what you're actually good at.
Open and closed history
Every paper trade is logged. Filter active versus closed positions, see realized P&L by period, and learn from your wins and losses.
Privacy-first by design
Nothing leaves your browser. No accounts, no servers, no tracking. Your trading data lives in local storage only, and you control it.
Built for serious paper traders.
The ultimate Polymarket paper trading sandbox
$0
Real money at risk, ever
$1,000
Starting virtual balance
1,200+
Polymarket events supported
Live
Order book refresh rate
Ready when you are
Start mirroring in 30 seconds.
Free forever. No account required. Just install, open Polymarket, and place your first paper trade.
Chrome & Chromium-based browsers · Compatible with Polymarket