Feature and pricing snapshot as of October 2026. Confirm current pricing on each vendor's site.
| Undercart | Koala Inspector | PPSPY | TrendTrack | Shophunter | |
|---|---|---|---|---|---|
| How you use it | Search 1M+ stores + extension + API | Extension, one store at a time | Tracked stores + extension | Ad search + tracked brands | Tracked stores |
| Sales / revenue estimate | Annual + monthly, confidence | Paid plan | 15-day sales report | None listed | Revenue + orders, hourly |
| Ads | Meta, Google, TikTok + creatives | Facebook, Instagram, Google | Ad tracker | Meta, Google; TikTok from Pro | |
| Apps + theme detection | ✓ | ✓ | ✓ | ✓ | None listed |
| Best sellers | ✓ | ✓ | None listed | None listed | ✓ |
| Marketing email capture | ✓ | None listed | None listed | Email tracking | None listed |
| Filter stores by revenue / apps | ✓ | — | None listed | None listed | None listed |
| API / MCP | Both, every plan | None listed | API service | API credits from Pro; MCP | None listed |
| Free option | 25 stores/mo + revenue checker | 15 tokens/mo | Free trial | Free Chrome extension | None listed |
| Entry paid price | $29/mo | $22/mo | $39/mo | $39/mo | Not published |
Sources: each vendor’s own pricing, product and Chrome Web Store pages, checked October 2026. “None listed” means the vendor’s site doesn’t mention it.
Where Koala Inspector shows you the store you're on, Undercart lets you find stores: filter 1M+ Shopify stores by revenue, category, country, apps installed or recently added, theme, traffic rank and trend, catalog size and more, then open any of them for a full profile — the actual ads it runs on Meta, Google and TikTok, its marketing emails and the discount codes in them, a revenue estimate (annual first) with a confidence score, best sellers, discounts, price history, product reviews, the app stack and its social following. It also has a Chrome extension for the store you're browsing, and a REST API and MCP server on every plan. It isn't built for supplier search or product sourcing.
PPSPY covers 1M+ active Shopify stores with a 15-day predicted orders-and-sales report, an ad tracker, app and theme detection and traffic-source analysis. Every plan includes data export, creative downloads and unlimited use of its Chrome extension; tracked stores are capped per plan (30 on Standard).
TrendTrack focuses on ads — Meta and Google on every plan, TikTok from Pro — with Meta ad spend from Meta's own data, store traffic powered by Similarweb, theme and app detection, email tracking, a free Chrome extension and an MCP connector. Lookups and tracked brands are capped per plan.
Shophunter tracks the Shopify stores you choose and models their revenue, order volume and best sellers with hourly updates, plus historical sales trends and Facebook ad spying. Pricing isn't published on its site.
Dropship.io pairs Shopify store analysis with a Facebook ad library (with spend) and a Chrome extension, on credit-based plans. Note that its sales tracker covers TikTok Shop, not Shopify stores.
If you outgrow one-store inspection and need lists, Storeleads is the broadest database: 13.8M active stores across 413 platforms, with apps and their install history, estimated sales and visits, and contacts. It's built for B2B prospecting rather than product research, and priced accordingly.
Try it without an account: the free Shopify revenue checkershows any tracked store’s estimated annual revenue range, theme and apps.
It depends on what you use Koala for. To search and filter many Shopify stores — by revenue, apps, traffic trend and more — and get full profiles with ads and marketing emails, Undercart. For dropshipping sales and ad tracking, PPSPY or TrendTrack. To watch a few competitors' sales hour by hour, Shophunter. Koala Inspector itself remains a good free option for one-store checks.
Koala Inspector has a free plan with 15 tokens a month, covering shop structure, product stats, newest products and best sellers, and CSV export. Premium is $22 a month for 220 tokens and tracking of up to 50 shops; traffic, ads and other lookups spend tokens.
As of October 2026 it appears not: commerceinspector.com no longer serves the product (it redirects to a site that returns a not-found page), and its Chrome Web Store listing shows the item as not available. The alternatives on this page cover what it did — store, app and product inspection — and more.
Undercart and Storeleads are databases you can search and filter, rather than browser tools that inspect the store you're on. Undercart is Shopify-only and goes deep per store — revenue with a confidence score, ads, marketing emails; Storeleads covers far more stores across 413 platforms, built for lead lists.
Undercart's REST API and MCP server work on every plan. PPSPY has an API service, TrendTrack includes API credits from its Pro plan, and Storeleads offers an API and MCP server from Pro ($250/month). Koala Inspector doesn't list an API.
Get 25 free Shopify store lookups — revenue, apps, ads and emails — and search the whole catalog. No card required.