Thumper by MagicMarkets

Unknown author · Tools

Open in Chrome Web Store

Users

Avg rating

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Ratings

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Updated

Oct 17, 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. Thumper sends the market ID of the Polymarket/MagicMarkets page you are viewing to our server to fetch prices. It can also send an optional wallet address you enter, and anonymous usage events (switchable off in Settings). It sells no data and collects no names, emails or payments.

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.