Feature and pricing snapshot as of October 2026. Vendor pricing changes often — confirm current numbers on each provider's site.
| Undercart | Storeleads | StoreCensus | BuiltWith | Koala Inspector | |
|---|---|---|---|---|---|
| Primary focus | Deep Shopify store intelligence | Multi-platform store DB | Shopify + Woo lead DB | Web-wide tech lookup | One-store browser checks |
| Coverage | 1M+ Shopify stores | 13.8M active (3.1M on Shopify) | ~4.8M Shopify + WooCommerce stores | 491.9M domains | One store at a time |
| Revenue estimate | Annual + monthly, confidence, signal breakdown | Estimated sales | Heuristic estimate | Spend/revenue data | Paid plan |
| Ad library data | Meta, Google, TikTok + creatives | None listed | None listed | Not a focus | Facebook, Instagram, Google |
| Contact data | Founders named on the store's pages | ✓ | Verified emails | Contact export | None listed |
| REST API | Every plan | Pro ($250/mo)+ | $99/mo+ | Sold separately | None listed |
| MCP server for agents | Every plan | Pro ($250/mo)+ | None listed | Via API credits | None listed |
| CSV export | $29/mo, 3,000 rows a month | Pro ($250/mo)+ | $49/mo+ | ✓ | ✓ |
| Free option | 25 stores/mo + revenue checker | Limited extension data | Test credits | Single-site lookups | 15 tokens/mo |
| Entry paid price | $29/mo | $75/mo | $49/mo | $295/mo | $22/mo |
Sources: each vendor’s own pricing, feature and API pages, checked October 2026. “None listed” means the vendor’s site doesn’t mention it.
Undercart tracks 1M+ Shopify stores and goes deep on each one: the actual ads it runs on Meta, Google and TikTok, the marketing emails it sends (cadence and discount codes), a revenue estimate (annual first) with a confidence score and a “why this number” breakdown, its best sellers, discounts and product reviews, the apps it runs — including apps added and removed over time — its social following, and its traffic rank, trend and top markets. The explorer filters on 23 fields plus apps installed, added or removed; saved searches send alerts. The REST API and MCP server work on every plan. It is Shopify-only, so it covers far fewer stores than Storeleads.
StoreCensus is the closest like-for-like alternative: a lead database of ~4.8M Shopify + WooCommerce stores with app and technology data, heuristic revenue estimates, verified contact emails, weekly change detection and outreach integrations (Apollo, Instantly, Smartlead, Zapier). Plans are credit-based — contact unlocks cost credits — and API access starts on Professional at $99/month.
BuiltWith tracks 127,700 technologies across 491.9M domains — far beyond ecommerce. Individual site lookups are free forever, which makes it the fastest way to check one store's stack. List-building plans start at $295/month for 2 reports; the API and its MCP endpoint are sold separately, in credits.
PPSPY covers 1M+ active Shopify stores with a 15-day predicted sales report, an ad tracker, app and theme detection, traffic-source analysis and a Chrome extension, plus an API service. It's built for finding winning products and stores rather than for B2B list building.
A Chrome extension with 200,000 Chrome users. Open any Shopify store and it shows its apps, theme, best sellers, traffic and top countries, and its ads; the paid plan adds detailed sales estimates and monitoring of up to 50 stores. It works one store at a time on a token budget, with no queryable database.
Panoramata tracks competitors' marketing — emails and newsletters, SMS and WhatsApp flows, ads across Meta, TikTok, YouTube, LinkedIn, Pinterest and Google Display, landing pages, social posts and pricing — with an MCP integration for AI agents. It is a marketing-intelligence tool for brands you choose to follow, not a store database to filter by revenue or apps.
Not sure yet? Try Undercart’s free Shopify revenue checker on a store you know, or compare the two head to head in Undercart vs Storeleads.
It depends on the job. For deep Shopify profiles — the ads a store runs, its marketing emails, a confidence-scored revenue estimate, best sellers, discounts and reviews — with an API and MCP server on every plan, Undercart. For a cheaper Storeleads-style lead database with contacts, StoreCensus. For technology lookup across the whole web, BuiltWith. For free one-store checks in the browser, Koala Inspector.
Yes. Undercart has a free plan (25 store lookups a month, plus a free revenue checker with no sign-up), BuiltWith offers free individual site lookups, Koala Inspector has a free plan with 15 tokens a month, and StoreCensus offers free test credits. On Storeleads, a free account sees a limited subset of the Chrome extension's data; paid plans start at $75/mo.
Undercart's REST API and MCP server work on every plan, including free. StoreCensus offers API access from its $99/month plan, PPSPY has an API service, and BuiltWith sells API credits (with an MCP endpoint) separately from its web plans. Storeleads itself offers an API and MCP server from Pro ($250/month).
No. Storeleads reports 13.8 million active stores across 413 ecommerce platforms, about 3.1 million of them on Shopify. Undercart is Shopify-only and tracks 1M+ Shopify stores. If you need other platforms, or the widest possible Shopify list, Storeleads has broader reach; Undercart's trade is depth per store.
Every tool estimates — none can see a store's real sales. Undercart explains its estimate the most: an annual figure first, a confidence score and a “why this number” breakdown on every full profile, plus a free revenue checker that shows any tracked store's range with no account. Storeleads, StoreCensus, PPSPY and Koala Inspector also publish sales estimates.
Get 25 free Shopify store lookups — revenue, apps, ads and emails. No card required.