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Kalshi vs Polymarket — Market Compare

Chrome extension by GBV · Productivity · Tools

A Chrome extension in Productivity · Tools with 9 users, barely installed.

Specific sites only: 10 match patterns.

What the developer says, and 1 screenshot

Loading from the Chrome Web Store. Open the listing if it does not appear.

Users
9
Rating
not rated yet
Users, last 17 days
+1
Version
1.0.2
Updated in the store
2026-04-28
Published
2026-04-28
Manifest
V3
Browser access
1 permission, 10 site patterns

How it has moved

Users
+1 since 31.08
8-9 · 9 readings
  1. 2026-08-318
  2. 2026-09-029
  3. 2026-09-048
  4. 2026-09-069
  5. 2026-09-078
  6. 2026-09-099
  7. 2026-09-108
  8. 2026-09-159
  9. 2026-09-169
Users
+1 since 31.08
8-9 · 9 readings
  1. 2026-08-318
  2. 2026-09-029
  3. 2026-09-048
  4. 2026-09-069
  5. 2026-09-078
  6. 2026-09-099
  7. 2026-09-108
  8. 2026-09-159
  9. 2026-09-169

A dot marks a day the store showed a different number. Between them the line carries the last one forward: we read every listing more than once a day and record a point only when something moves. History beyond ninety days is in the app.

What it can reach

Specific sites only: 10 match patterns.

  • https://kalshi.com/*
  • https://*.kalshi.com/*
  • https://polymarket.com/*
Show the remaining 7
  • https://*.polymarket.com/*
  • https://api.elections.kalshi.com/*
  • https://gamma-api.polymarket.com/*
  • https://clob.polymarket.com/*
  • https://data-api.polymarket.com/*
  • https://polymarket-ai-proxy.u-niv.workers.dev/*
  • https://api.gumroad.com/*
  • Store data in your browser storage

The full permission history for this extension

What changed recently

Nothing has moved on this listing since we started watching it.

The publisher

GBV publishes 20 listings we track, 2k users between them.

  1. Fast & Anonymous Instagram Downloader GBV · Lifestyle · Social · published 2026-04-16 459 users ★ 5.0
  2. WA Chat Export GBV · Productivity · Tools · published 2026-02-20 323 users ★ 5.0
  3. NovaView GBV · Lifestyle · Fun · published 2025-11-18 248 users ★ 5.0
Show 5 more from this publisher
  1. Polymarket Sure Bet Finder GBV · Productivity · Tools · published 2026-01-21 202 users ★ 4.3
  2. Delete Facebook Messages Fast GBV · Productivity · Tools · published 2026-03-29 184 users ★ 3.0
  3. Exportar Conversas WhatsApp - Salvar Histórico GBV · Productivity · Tools · published 2026-03-06 167 users ★ 5.0
  4. Stream Saver — M3U8, HLS & MP4 Video Downloader GBV · Productivity · Tools · published 2026-05-21 145 users
  5. Polymarket Whale Tracker GBV · Productivity · Tools · published 2026-02-06 110 users ★ 5.0

Like this one

Listings the catalog judges closest in what they say they do.

  1. PolyArbitrage - Polymarket Odds Scanner Describes nearly the same job, smaller audience 98 users
  2. Sorin Analysis for Polymarket, Kalshi & Prediction Markets Describes nearly the same job, smaller audience 61 users ★ 5.0
  3. Thumper by MagicMarkets Describes nearly the same job, smaller audience 29 users
  4. MarketPulse - Research for Kalshi & Polymarket Describes nearly the same job, smaller audience 19 users
  5. Polycool — Odds & Trader Analytics Describes nearly the same job, smaller audience 19 users ★ 5.0

The top 5 only. The full comparison, with why each one is close, is on the alternatives page; ranking a whole neighbourhood by your own criteria is in the app.

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Figures come from our own daily pass over the public Chrome Web Store listing, last read on . We publish no contact details for extension developers.