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RivalSonar
Guides

Guides for ecommerce competitor research

Practical, specific guides to winning products, competitor stores, ad libraries, sales estimates and store tech. Current as of November 2026 and free to read.
A running shoe and two drink bottles on a podium under a bright starWinning products

How to find winning products

A repeatable method for finding products that already sell, using store data, ad libraries and best-seller signals, plus the checks that stop you chasing a trend that has already peaked.

22 Oct 2026 6 min read

Product research

Finding winning products, best sellers and validating them before you spend.

Competitor stores

Researching any store, one-product stores and what they sell.

Ad research

Reading ad libraries, ad longevity and reach across Meta and TikTok.

Sales and traffic

Estimating store sales, tracking orders and sizing a niche by country.

Themes and apps

Which themes, apps and tools top stores run, and how to choose yours.

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