Launch Pricing only till 30 June  ·  $3.99/mo locked for life
// prediction market intelligence

The market moved.
Find out why.

Browser extension for Polymarket and Kalshi. Find out what changed the odds and what made markets spike or drop — right in your browser, in seconds.

add to chrome
Charter pricing: $3.99/mo  ·  locked for life  ·  closes June 30
Demo GIF / screen recording Extension in action on a real market.
Chart spike → click → analysis appears.
8–12 sec loop · ~1200×680px
// works on Kalshi Polymarket Manifold soon PredictIt soon
// how it works

Your copilot on
prediction markets

Every chart tells a story.
Catalyst reads it.

01
Install. Open any market.

Add Catalyst to Chrome. It activates silently on any Kalshi or Polymarket market page — no setup, no configuration.

Screenshot Chrome toolbar · Catalyst icon installed
02
Click a point. Drag a range.

Click any point on a chart to lock a date, or drag to select a time window. Catalyst captures the exact market data at that moment.

GIF Cursor selecting a point or range on the chart
03
Read the story behind the move.

Get a clear explanation of what drove the change — the events, decisions, and news behind it — with source links so you can read the evidence yourself.

Screenshot Side panel · completed analysis with sources
// charter pricing

We want to celebrate
our launch with you.

Catalyst is in its launch period. Charter Members lock in the lowest rate it will ever be — permanently, no matter what the price becomes for future subscribers.

Charter pricing closes June 30, 2026
charter member
$8.99 $3.99 /mo
Your price stays at $3.99. Forever.
  • Fair use applies
  • Works on Kalshi and Polymarket
  • Sourced results — see the evidence behind every answer
  • Binary and scalar market support
  • Rate locked for life — never increases for you
cancel anytime  ·  secure checkout
// faq

Common questions

Anything else? Reach out directly.

Catalyst works on Kalshi and Polymarket market pages — both binary (yes/no) markets and scalar markets like valuations and price targets. Open any market page and the extension activates automatically.
Catalyst searches real news sources and public information from the period you select, then synthesizes a clear explanation of what drove the move. Every result includes direct source links so you can read the original articles yourself.
Catalyst is newly launched. Charter Members are early — they take a small bet on the product before it has a track record, and we lock their rate as a permanent reward for that. Your $3.99/mo never changes, even as the product improves and the price rises for new subscribers.
Yes, immediately and with no friction. If you cancel and later resubscribe, you'd be on the then-current rate — so it pays to stay, but there's no lock-in.
Catalyst is a Chrome extension — it works on desktop Chrome. Mobile Chrome doesn't support extensions. Use it at your desk while you trade.
// charter pricing · closes june 30

Stop wondering why
the chart moved.

$3.99/month · Locked for life · Cancel anytime