> Markdown version of [/tools/predictmirror](https://launchpoly.com/tools/predictmirror) — served by LaunchPoly, the directory of Polymarket, Kalshi and other prediction market tools. # PredictMirror Paper trade every Polymarket market with zero risk. Works with[Polymarket](/tools?market=polymarket) [Browser Extensions](/category/extensions) · free · Browser Extension [Visit website](https://predictmirror.com/) Vote0 votes. Upvote PredictMirror Share 1 / 5 ## About PredictMirror PredictMirror is a free Chrome extension that overlays a paper trading panel onto Polymarket event pages, mirroring the live order book so simulated trades fill at real prices with modeled slippage. Traders start with $1,000 in virtual capital, choose a side, set an amount, and place BUY or SELL trades across sports, crypto, politics, culture, and esports markets. The extension tracks portfolio value, win rate, current streaks, and open versus closed positions, with sparklines and area charts showing P&L history and a 30-day activity heatmap for reviewing past activity. Support currently covers Polymarket, with Kalshi and Manifold listed as coming soon. The tool requires no wallet connection, no account, and no sign-up; all trading data stays in local browser storage and nothing is sent to a server. This makes it suited to people who want to test a trading idea or build conviction on a specific market before committing real funds, or who want to practice reading order books and tracking their own performance over time without financial risk. Balances can be reset at any point, allowing repeated strategy tests from a clean slate. It's positioned as a learning layer that sits on top of the existing Polymarket interface rather than a replacement for it, and it remains free with no stated limits on usage. PredictMirror is a free browser extensions tool built for Polymarket traders — Paper trade every Polymarket market with zero risk. It is listed in the LaunchPoly directory, where it was added on July 1, 2026 and currently has 0 community votes this round. PredictMirror is a free Chrome extension that lets you paper trade every Polymarket market with zero risk. You start with the virtual capital you want. Place BUY and SELL trades on sports, crypto, politics, culture, esports. Track your portfolio, win rate, streaks, and a 30-day activity heatmap. No wallet. No account. No data leaves your browser. ## Questions about PredictMirror ### What is PredictMirror? PredictMirror is a free browser extensions tool for Polymarket. Paper trade every Polymarket market with zero risk. ### Is PredictMirror free to use? Yes — PredictMirror is free to use. ### What category does PredictMirror belong to? PredictMirror is listed under Browser Extensions on LaunchPoly's prediction market tools directory. ### How is PredictMirror ranked on LaunchPoly? PredictMirror is ranked by community votes from real traders. Votes reset every other Sunday, and it currently has 0 votes this round. ## At a glance Category Browser Extensions Pricing free Works with Polymarket Platforms Browser Extension Votes this round 0 Listed July 1, 2026 Updated October 14, 2026 ### Links [X](https://x.com/predict_mirror) Report Support this tool ## Boost PredictMirror Give this listing a sponsored homepage card. Anyone can buy a Boost, including guests. - **3 days**$15 - **7 days**$29 - **14 days**$49 - Review available dates before paying - Clearly labelled as sponsored - Community votes and ranking stay unchanged Boost this listing One-time card payment. You are buying promotion, not ownership of the listing. [Choose another listing →](/boosts) Support this tool ## Boost PredictMirror Give this listing a sponsored homepage card. Anyone can buy a Boost, including guests. - **3 days**$15 - **7 days**$29 - **14 days**$49 - Review available dates before paying - Clearly labelled as sponsored - Community votes and ranking stay unchanged Boost this listing One-time card payment. You are buying promotion, not ownership of the listing. 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