The 5 best tools to spy on Shopify stores in 2026

The short answerTrendTrack is the most complete for analyzing a competing brand end to end (store, ads, emails). Minea is strong for ad research. Koala Inspector is enough to inspect a store quickly, and Similarweb for the traffic of any website.

The comparison

#	Tool	Key strength	Best for	Score
1	TrendTrack	Stores, Meta/TikTok ads and emails in one place	Full competitor analysis	8.6
2	Minea	Ads across multiple networks	Finding winning products	8.1
3	Koala Inspector	Chrome extension built for Shopify	Quick store inspection	7.7
4	Similarweb	Traffic and traffic sources	Any website, not just Shopify	7.5
5	Commerce Inspector	Product tracking and alerts	Monitoring product launches	7.2

The details

1. TrendTrack

TrendTrack combines store search, a Meta and TikTok ad library, an email library and brand tracking. It's the most complete tool for understanding a competitor's strategy, starting at €34/month. See our TrendTrack review.

2. Minea

Minea analyzes ads on Facebook, TikTok, Pinterest and Snapchat and helps you spot products that are taking off. Search volume is limited by monthly credits.

3. Koala Inspector

Koala Inspector is a Chrome extension: on a Shopify store, it shows the theme, the apps, the best-selling products and a revenue estimate. No ad data.

4. Similarweb

Similarweb estimates the traffic of any website, its sources and its audience by country. The data is less accurate for small stores.

5. Commerce Inspector

Commerce Inspector tracks a store's products and sends alerts when it launches new ones. It doesn't cover ads.

How to choose

You want to know everything about 2 to 10 direct competitors: TrendTrack.
You're looking for winning products to test: Minea or TrendTrack.
You just want to look at a store from time to time: Koala Inspector.
You're comparing sites outside Shopify: Similarweb.

FAQ

Is it legal to spy on a Shopify store?

Yes, these tools analyze public information: ads that are running, store pages, emails received after signing up. Copying protected visuals or copy, however, is still prohibited.

Are sales estimates reliable?

They are ballpark figures. Use them to compare stores with each other, not to know exact revenue.