Feature and pricing snapshot. Vendor pricing changes often — confirm current numbers on each provider's site before you buy.
| Undercart | Storeleads | BuiltWith | Koala Inspector | |
|---|---|---|---|---|
| Primary focus | Shopify store intelligence | Multi-platform store DB | Web-wide tech lookup | Single-store spy tool |
| Stores covered | ~2M Shopify | 13M+ / 400+ platforms | 26M+ ecommerce sites | One at a time |
| Live enrichment pipeline | ✓ | Periodic index | Periodic index | ✓ |
| Revenue estimate + confidence | ✓ | Estimate | — | Estimate |
| Ad presence data | ✓ | — | Spend attributes | Running ads |
| Full tech-stack detection | ✓ | ✓ | ✓ | ✓ |
| REST API | ✓ | Pro tier | Paid tiers | — |
| MCP endpoint for agents | ✓ | — | — | — |
| Chrome extension | ✓ | ✓ | ✓ | ✓ |
| Free tier | 25 lookups/mo | Limited preview | Single-site lookup | ✓ |
| Entry paid price | $29/mo | ~$75/mo | ~$295/mo | ~$22/mo |
Sources: vendor pricing and product pages, mid-2026. Figures are approximate and change frequently.
Undercart runs a live enrichment pipeline over ~2M Shopify stores: it crawls the storefront, reads /products.json, probes inventory, detects the full app stack, aggregates ad presence across Meta/Google/TikTok/LinkedIn, and resolves a composite revenue estimate with a confidence score. Everything is queryable from a REST API, an MCP endpoint for AI agents, and a Chrome extension. It is Shopify-only, so its catalog is smaller than Storeleads' multi-platform database.
BuiltWith tracks ~114,000 technologies across 400M+ domains — far beyond Shopify. Its free single-site lookup is the fastest way to check one store's stack with no signup. List-building plans jumped sharply in 2026 and lower tiers cap how many technologies you can filter on, so systematic prospecting gets expensive.
A Chrome extension used by 250k+ people. Open any Shopify store and it surfaces best-sellers, installed apps, the theme, estimated sales/traffic, running ads and recent product adds. Great for manual competitor research, but it works one store at a time and there is no queryable database or API.
Panoramata tracks 4,000+ curated brands across email, SMS, ads and landing pages, with historical creative and benchmarks. It is a marketing-channel intelligence tool, not a store database — you cannot pull a filtered list of millions of Shopify stores by revenue or tech.
A newer Storeleads-style lead database that competes mainly on price and export limits. Coverage and app-history depth are still maturing relative to Storeleads.
Shophunter tracks the stores you point it at and models their sales hourly — daily revenue, order volume, best-sellers down to the variant, plus theme and app detection. Strong for watching a shortlist of competitors closely. Every number is a modeled estimate, tracking is capped per plan, and there is no large queryable database or API.
It depends on the job. For live revenue estimates with confidence scoring, ad-presence data and an API/MCP that agents can query, Undercart is the closest Shopify-focused alternative. For the widest technology coverage across the whole web, BuiltWith is stronger. For free single-store spying, Koala Inspector is the easiest.
Yes. Undercart has a free tier (25 store lookups per month), and Koala Inspector and BuiltWith both offer free single-store lookups. Storeleads also has a free account, but it only shows a limited preview of each store's data — full profiles, CSV export and API access require paid plans.
Undercart exposes a REST API and an MCP endpoint on paid plans (and pay-as-you-go API credits). Storeleads offers an API on its Pro tier. Koala Inspector and Panoramata do not offer a general store-data API.
No. Storeleads indexes 13M+ stores across 400+ ecommerce platforms; Undercart is Shopify-only and tracks around 2 million Shopify stores. If you need non-Shopify platforms, Storeleads has broader reach. If you only sell to Shopify merchants, Undercart's depth per store is the trade-off in your favor.
Undercart computes a composite revenue estimate from catalog size, product pricing, ad spend, tech stack and social signals, weighted by confidence and benchmarked against a truth set, with very large estimates verified by an LLM. Storeleads and Koala Inspector also show revenue/sales estimates but expose less about how confident each number is.
Get 25 free Shopify store lookups — revenue, stack, ads and contacts. No card required.