Feature and pricing snapshot as of October 2026. Vendor pricing changes frequently — confirm current numbers before buying.
| Undercart | Storeleads | BuiltWith | PPSPY | Koala Inspector | Panoramata | |
|---|---|---|---|---|---|---|
| Best for | Deep Shopify profiles + API/MCP | Multi-platform lists | Web-wide tech | Dropshipping research | One-store checks | Marketing creatives |
| Coverage | 1M+ Shopify stores | 13.8M active (3.1M on Shopify) | 491.9M domains | 1M+ active Shopify stores | One store at a time | Brands you follow |
| Revenue estimate | Annual + monthly, confidence | Estimated sales | Spend/revenue data | 15-day sales report | Paid plan | None listed |
| Ad library data | Meta, Google, TikTok + creatives | None listed | Not a focus | Ad tracker | Facebook, Instagram, Google | 6 networks |
| Marketing email capture | ✓ | None listed | None listed | None listed | None listed | ✓ |
| Tech / app detection | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| REST API | Every plan | Pro ($250/mo)+ | Sold separately | API service | None listed | None listed |
| MCP server for agents | Every plan | Pro ($250/mo)+ | Via API credits | None listed | None listed | ✓ |
| Chrome extension | ✓ | ✓ | ✓ | ✓ | ✓ | None listed |
| Free option | 25 stores/mo + revenue checker | Limited extension data | Single-site lookups | Free trial | 15 tokens/mo | Limited signup |
| Entry paid price | $29/mo | $75/mo | $295/mo | $39/mo | $22/mo | $99/mo |
Sources: each vendor’s own pricing, product and API pages, checked October 2026. “None listed” means the vendor’s site doesn’t mention it.
Selling to Shopify merchants? Lead with Undercart for ads, marketing emails, confidence-scored revenue, best sellers and discounts, with an API/MCP your tools can call. Its Shopify-only scope is the point: depth over breadth.
Prospecting across many platforms? Storeleads or BuiltWith give you the widest net. Use Storeleads for store lists and app history, BuiltWith for any-technology fingerprinting across the web.
Hunting products or watching a few competitors? PPSPY tracks sales and ads for dropshipping research, and Koala Inspector is free and instant in the browser. Studying campaigns? Panoramata archives emails, SMS and ad creatives for the brands you follow. Only want a quick revenue number? Try the free Shopify revenue checker, or read how to find a Shopify store’s revenue.
There's no single winner — it depends on the job. Undercart is best for deep Shopify profiles: ads, marketing emails, a confidence-scored revenue estimate, best sellers, discounts and reviews, with an API and MCP server on every plan. Storeleads is best for the largest multi-platform database and app-history list building. BuiltWith is best for web-wide technology lookup. PPSPY suits dropshipping sales and ad tracking, Koala Inspector free one-store checks, and Panoramata email, SMS and ad-creative intelligence.
Undercart has a free plan of 25 store lookups a month and a free revenue checker with no sign-up. Koala Inspector has a free plan (15 tokens a month), BuiltWith offers free individual site lookups, and Panoramata has a limited free signup. On Storeleads, a free account sees a limited subset of the Chrome extension's data.
Undercart's REST API and MCP server work on every plan, including free (on the free plan a store lookup or a search through the API or MCP uses 5 of the month's lookups or searches). Storeleads offers an API and a hosted MCP server from Pro ($250/month). BuiltWith sells API credits, with an MCP endpoint, separately from its web plans. PPSPY has an API service, and Panoramata an MCP integration. Koala Inspector doesn't list an API.
Every tool estimates — none can see a store's real sales. Undercart explains its number 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, PPSPY and Koala Inspector also publish sales estimates.
Often, yes. Many teams pair a broad database (Storeleads or BuiltWith) with a deep Shopify tool (Undercart) and a browser extension for ad-hoc checks. Start with the one that matches your main workflow and add others only when a gap appears.
Undercart, Storeleads and BuiltWith all offer MCP access. Undercart's is included on every plan and covers Shopify-specific depth — revenue, apps, ads and captured marketing emails — so an agent in Claude or another MCP client can search stores and read their ads and emails directly.
25 free Shopify store lookups on Undercart — revenue, apps, ads and emails. No card required.