Thumper by MagicMarkets

Unknown author · Tools

Open in Chrome Web Store

Users

Avg rating

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Ratings

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Updated

Aug 14, 2026

Media

4 items

Description

Thumper by MagicMarkets — live price comparison, edge detection, and hedging across prediction markets. Thumper is a side-panel companion for prediction-market traders. Open a market and Thumper instantly shows the same event's price across venues - so you always know where it's cheaper before you trade. • Live price comparison, side by side, updated as you browse • Cheaper-venue verdict — which side is the better deal, and by how much • Edge & arbitrage detection when prices disagree enough to matter • Order-book depth & price impact before your order moves the market • Payout calculator — enter an amount, see your return on each venue • Hedge & position sizing without leaving the page • Optional desktop alerts when a significant edge appears (off by default) WORKS ON • polymarket.com • pro.magicmarkets.com More venues coming. Collects no personal data — your settings stay in your browser. Thumper is an independent tool.

History

30d 90d 1y all

rating_count is the Chrome Web Store ratings count, not a written-review count.

Details & SEO

SEO signals

Listing completeness signals

Title length
Characters in the extension name.
23
Description length
Characters in the listing description.
939
Media assets
Screenshots and videos on the listing.
4
Has promo video
Whether the listing includes at least one video.
No
Languages
Declared language locales.
1
Developer website
Listing exposes a developer website URL.
No
Contact email
Listing exposes a contact email.
Yes
Keyword in name
Case-insensitive substring match in the name.
—
Keyword in description
Case-insensitive substring match in the description.
—
Keyword occurrences in description
Count of case-insensitive occurrences in the description.
—
Category user-count percentile
Share of same-category extensions with fewer users (null if unknown).
60.5

These are transparent listing completeness / keyword signals, not a prediction of Chrome Web Store search ranking.

Description

Details & SEO

SEO signals

Listing completeness signals

Title length
Characters in the extension name.
23
Description length
Characters in the listing description.
939
Media assets
Screenshots and videos on the listing.
4
Has promo video
Whether the listing includes at least one video.
No
Languages
Declared language locales.
1
Developer website
Listing exposes a developer website URL.
No
Contact email
Listing exposes a contact email.
Yes
Keyword in name
Case-insensitive substring match in the name.
—
Keyword in description
Case-insensitive substring match in the description.
—
Keyword occurrences in description
Count of case-insensitive occurrences in the description.
—
Category user-count percentile
Share of same-category extensions with fewer users (null if unknown).
60.5

These are transparent listing completeness / keyword signals, not a prediction of Chrome Web Store search ranking.