Similarweb shows a competitor's traffic. TechSpy shows the stack behind it.
Similarweb estimates how many visits a site gets and where they come from. TechSpy does not estimate traffic. It reads what powers that traffic: hosting and CDN, analytics, marketing automation, experimentation, payments, plus DNS and email security. Most teams researching a competitor need both views.
- The real stack behind a competitor's site, grouped by what it means
- DNS, DMARC, SPF, DKIM and subdomains in the same scan
- Free at 30 scans a day; public pricing from $19/mo
Free — no card, 30 scans/day.
Similarweb — the traffic view
TechSpy — the read · acme.io
HighVerdict
Shopify storefront on Cloudflare with Klaviyo, Meta and TikTok pixels: a paid-social-led brand with email retention.
Evidence: Shopify + Cloudflare headers; Klaviyo forms; Meta and TikTok pixels firing on load; DMARC p=none.
Implication: their growth runs on paid social and email; that is where a competing offer or a vendor pitch should aim.
Traffic tells you how big. The stack tells you how they do it.
Similarweb answers “how much traffic does this site get, and from where?” That is the right tool for sizing a competitor. It does not tell you which tools turn that traffic into revenue. TechSpy scans the site and shows the analytics, automation, experimentation and payment stack, so you can see how a competitor runs its funnel.
What a traffic view gives you
acme.com · 1.2M visits · 38% paid social
Useful scale. Silent on how they convert it.
What the read gives you
- VerdictA paid-social-led brand with email retention
- EvidenceShopify, Klaviyo, Meta + TikTok pixels
- ImplicationsTheir growth runs on paid social and email
Head to head
Not all checkmarks on our side: traffic estimates and channel data are Similarweb's home turf, bolded below.
What only TechSpy does
What a traffic estimate can't show: how the site is built and what it runs on.
🔍
Deep Scan reads the network tab
A headless browser plus HAR capture surfaces the hidden APIs, SDKs, and third-party calls that never appear in static HTML.
🛡️
Infrastructure, not just front-end tags
Every scan audits DNS, DMARC, SPF, DKIM, and maps subdomains, so you see how a company's email and infrastructure are configured and where the gaps are.
🧭
A read, not a raw list
Tools are grouped by what they mean and turned into a Verdict, Evidence, and Implications with High / Medium / Low confidence. When a site is blocked, it says so.
Pick Similarweb instead if…
Different jobs. Pick the one that matches yours.
Choose Similarweb if you need to
- Estimate a competitor's traffic, visits and growth over time.
- See traffic sources, channel mix, keywords and referrals.
- Benchmark audience size across a market.
Choose TechSpy if you need to
- You need the tools behind a competitor's site, not its traffic.
- You want DNS, DMARC and subdomains alongside the stack.
- You want a Verdict, Evidence and Implications you can act on.
- You want public pricing that starts free at 30 scans a day.
Start free — pay when it becomes a habit
Free
$0
- Scans: 30/day
- Deep Scan: —
- Interact: —
- Export PDF: —
- API · Zapier · MCP · CLI: —
Plus
$19/mo
- Scans: 30/day
- Deep Scan: 10
- Interact: 5
- Export PDF: —
- API · Zapier · MCP · CLI: ✓
Max
$49/mo
- Scans: Unlimited
- Deep Scan: 50
- Interact: 25
- Export PDF: ✓
- API · Zapier · MCP · CLI: ✓
Enterprise $199/mo. Static scan runs in seconds; Deep Scan & Interact take minutes.
Know their traffic? Now see what runs it.
Scan a real target free — no login, 30 scans a day.