StackOptic
Fair pricing · Cancel anytime · No hidden fees

Transparent pricing.Serious power.

Start free with 5 daily analyses. Upgrade to unlock AI deep-dives, exports, re-analysis, and team tools — cancel anytime.

Save 20% on every plan — cancel anytime

Free

Curious visitors

Run a full 18-module audit on any public site in seconds. No card, no trial, no catch.

$0/ forever

No credit card required

Start Free — No Card

What's included

  • 5 audits / day — try before you upgrade
  • All 18 modules: tech, speed, security, SEO, AI readiness
  • 7,000+ tech signatures — spot any stack instantly
  • Shareable report links — send clients a live URL
  • Security grades A+ → F with fix guidance
  • AI deep-dive — your fix list in 8 seconds
  • Re-analysis & change tracking
  • Export PDF / JSON for client delivery
  • Ad-free, distraction-free interface
  • Bulk audit packs
Start Free — No Card

Solo

Founders & side projects

Pick one domain. Get unlimited Pro-level audits, AI insights, and history for that site — at half the Pro price.

$7.5/ mo

$90 billed annually · cancel anytime

Lock My Site — $7.50/mo

What's included

  • 1 locked domain + all subdomains
  • Unlimited re-audits on your locked site
  • 5 audits / day for research on any other site
  • AI deep-dive — turn data into action10/mo
  • Track every change over time — never miss regressions
  • Export PDF / JSON — proof for investors & clients
  • Ad-free, distraction-free interface
  • Swap your locked domain once per cycle
  • Bulk audit packs
  • REST API & webhooks
Lock My Site — $7.50/mo
Most Popular

Pro

Freelancers & devs

Win client audits faster. AI-written fix lists, branded PDFs, change tracking — ship a deliverable in 10 minutes, not 3 hours.

$19/ mo

$228 billed annually · cancel anytime

Go Pro — $19/mo

What's included

  • 10 audits / day — audit any domain you want
  • Everything in Free, plus:
  • AI deep-dive — prioritized fix list in seconds50/mo
  • Re-audit with history & visual diffs50/mo
  • Client-ready PDF / JSON exports
  • Ad-free, distraction-free interface
  • White-label client reports
  • Bulk audit packs
  • REST API & webhooks
  • Team seats
Go Pro — $19/mo

Agency

Agencies & teams

Onboard 50 clients in one sprint. Your brand on every report, API to wire it to your stack, 5 seats to scale the team.

$79/ mo

$948 billed annually · cancel anytime

Go Agency — $79/mo

What's included

  • 50 audits / day — handle whole client portfolios
  • Everything in Pro, plus:
  • White-label — your logo, your domain, your brand
  • AI deep-dive at scale250/mo
  • Bulk audit — 50 URLs per run, one report pack
  • REST API — automate your audit pipeline500/day
  • Webhook alerts & priority analysis queue
  • 5 team seats included
  • SSO / SAML
  • Dedicated account manager
  • On-premise deployment
Go Agency — $79/mo

Enterprise

Custom · Built for scale

Unlimited analyses, SSO/SAML, dedicated account manager, SLA guarantees, on-premise deployment, custom integrations, and volume-based pricing.

Unlimited analysesSLA 99.9%SSO / SAMLDedicated AMOn-premiseCustom integrations
Contact Sales

Cancel anytime

No long-term lock-in

Secure checkout

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Instant access

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Paid Plan Benefits

What you unlock on day one

Every paid plan turns a static report into a living workflow — insights, history, export, automation.

AI technical deep-dive

Our AI reads the full report and writes a prioritized, actionable analysis — architecture, bottlenecks, quick wins.

Solo · Pro · Agency

Re-analysis & history

Refresh data on demand and track how a site evolves — snapshots, diff reports, regression detection.

Solo · Pro · Agency

Bulk analysis

Drop 50 URLs, grab coffee, get a full report pack. Perfect for agency onboarding sprints.

Agency

REST API & webhooks

500 req/day API, Zapier-ready webhooks. Trigger analysis from your CI, monitor stack drift automatically.

Agency

White-label & team

Ship reports under your own brand. Five seats included — share access with your team, keep billing central.

Agency

Full Comparison

Compare every feature

No asterisks, no gotchas. Here's exactly what each plan includes.

Feature
Free
Free
Solo
$7.5/mo · yearly
Pro
$19/mo · yearly
Popular
Agency
$79/mo · yearly
Analysis
Daily analyses
5/day5/day + locked domain10/day50/day
Cached report viewing
UnlimitedUnlimitedUnlimitedUnlimited
Analysis modules
18181818
Technology signatures
7,000+7,000+7,000+7,000+
Bot-protection bypass
Cloudflare, Sucuri, LiteSpeed etc.
AI & Intelligence
AI technical deep-dive
—10 / month50 / month250 / month
Interactive AI chat
—
Prioritized recommendations
—
AI & LLM readiness module
Reporting & Data
Re-analysis credits
—10 / month50 / month250 / month
Historical snapshots
—
Change tracking over time
—
PDF export
—
JSON export
—
White-label branding
———
Scale & Automation
Bulk analysis
———50 URLs/run
REST API
———500 req/day
Webhook notifications
———
Priority analysis queue
———
Team seats
1115
Experience
Ad-free experience
—
Permanent shareable reports
Email support
PriorityPriority

All paid plans include every analysis module. Limits above are monthly quotas that reset on your billing anniversary. Need something different? Talk to us.

Match your workflow

Find the plan that fits

Curious visitor

Free

Explore any site. Scores, tech stack, security grades — no sign-up hurdles.

Start free

Solo founder

Solo

Track one site religiously. AI insights + history for $7.50/mo billed yearly.

Lock my site

Freelance dev

Pro

Audit any client site with AI deep-dive, export & comparative reports.

Go Pro

Agency team

Agency

White-label, bulk, API, 5 seats — everything you need to bill.

Go Agency

Top-Up Packs

Need more credits?

One-time top-ups when you need a spike. Credits expire at the end of your billing cycle.

Re-analysis Credits

Refresh analysis data on demand

$4.99

10 credits

Buy 10 credits

Solo · Pro · Agency

AI Insight Credits

AI-powered improvement recommendations

$9.99

25 credits

Buy 25 credits

Solo · Pro · Agency

Bulk Analysis Pack

Analyze multiple sites in one run

$14.99

50 URLs

Buy 50 URLs

Agency only

Why teams upgrade

Trusted by web professionals

“I've never seen such a comprehensive report in my life; it's turned out to be a brilliant product.”

OA

Onur Arslan

Developer

“We replaced three separate tools with StackOptic. The AI deep-dive alone saves us hours per client audit. Our team won't go back.”

SM

Sarah Mitchell

Agency Owner, Pixel & Code

“The AI readiness module is a game-changer. No other tool checks llms.txt validation and bot access. It's part of my pre-launch checklist.”

JC

James Chen

Full-Stack Developer

FAQ

Frequently asked questions

What exactly counts as an "analysis"?
An analysis is triggered when you run StackOptic on a domain that isn't already in our database, or when you use a re-analysis credit to refresh an existing report. Viewing a cached report — your own or anyone else's — is always free and never consumes a credit.
How does Solo differ from Pro?
Solo locks one domain (plus all subdomains) and gives you full Pro-level features for that single site at $9/mo. If you work across multiple sites — client audits, competitive research, freelance projects — Pro is the right fit. You can change your Solo locked domain once per billing cycle.
Can I cancel or switch plans anytime?
Yes. All paid plans are month-to-month or yearly and can be cancelled from your account page at any time. Upgrades and downgrades are prorated automatically by Lemon Squeezy. No retention calls, no cancellation fees.
What happens when I hit my daily or monthly limit?
You'll see a friendly banner. Daily limits reset at 00:00 UTC. Monthly quotas reset on your billing anniversary. If you need more mid-cycle, you can buy a top-up pack (re-analysis or AI credits) or upgrade to the next plan — both take effect instantly.
Do add-on credits roll over?
No. Add-on credits are designed for one-off spikes and expire at the end of your current billing cycle. They stack with your plan's monthly quota while active.
Is there a free trial on paid plans?
No trial — but the Free plan lets you experience every core module (18 analyses, 7,000+ signatures, all scores) with 5 analyses per day, forever, no credit card required. Upgrade only when the Free plan feels limiting.
How does the AI deep-dive work?
After each analysis, our AI reads the full structured report — performance metrics, security findings, tech stack, SEO audit, AI readiness — and writes a prioritized technical deep-dive: what matters most, why it matters, and how to fix it. You can then ask follow-up questions in an interactive chat.
Can I use StackOptic on sites behind Cloudflare or bot protection?
Yes. StackOptic runs a real browser engine (Patchright/Camoufox) that behaves like a human visitor — it executes JavaScript, solves basic challenges, and rotates through a residential-grade proxy pool. It successfully analyzes sites protected by Cloudflare, Sucuri, LiteSpeed Cache, and similar systems where HTTP-only tools fail.
What does the REST API include?
Agency plans get 500 authenticated API requests per day, covering analysis triggering, report retrieval (JSON), and webhook registration. Full OpenAPI docs are available from your account dashboard after upgrade.
Who handles payment and VAT?
Lemon Squeezy is our Merchant of Record — they handle checkout, VAT, tax invoices, refunds, and compliance worldwide. You get a proper invoice in your inbox for every payment. Card data never touches our servers.

Start free in 10 seconds.

No credit card. No commitment. Upgrade when — and only if — you love it.

Analyze a site — Free Talk to Sales

All plans billed in USD · Payments processed by Lemon Squeezy · EU/UK VAT handled automatically