Calcula Plano

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www.calculaplano.com.br · Added June 11, 2026 · Last analysed June 11, 2026 · via · 78% unique tagline

Own this Launch?

StackScope is a free public catalogue of indie launches. We find launches on Product Hunt, Hacker News and similar feeds, then crawl each site to detect its tech stack and score it for launch readiness: DNS, security headers, SEO basics. This page is what we saw on 11 June 2026; the live site may have changed since.

Calcula Plano covers some of the launch checklist, with a thorough launch checklist and clean crawl signals. What needs work: missing several security headers, incomplete legal pages, and analytics without a consent banner.

Launched on Product Hunt on June 11, 2026. The site is hosted on Amazon.com in the United States, with a domain registered 1 day before launch. Our crawler found 9 technologies on this site, covering analytics, build tooling, CSS frameworks, and DNS providers. The stack includes Tailwind CSS, Vite, and Google Analytics.

Notably, it's running the same core stack as 1,480 other launches.

If you own this site, refresh the snapshot and see the full fix list any time →

5.2

StackScope Score

Fair

90/100 Launch Readiness

Launch ready

1/6 Security Headers

Poor

0/3 Legal

Missing

2/2 Web Standards

Complete

100/100 Performance

Fast

Vibe Score 8 · Few AI signals

Informational pattern-match signal. Does not feed the StackScope Score. See which fingerprints fired →

Tech Stack (9)

Infrastructure

DNS	Vercel DNS
Hosting	Vercel
Security	HSTS

Build & Framework

Build tool	Vite
CSS framework	Tailwind CSS
Font	Google Fonts
UI library	shadcn/ui

Analytics & Marketing

Analytics	Google Analytics (3)
SEO	Google Search Console

Infrastructure

Network

AMAZON-02 - Amazon.com, Inc., US

AS16509 · US

DNS

Vercel DNS

Authoritative nameserver

DNSSEC

Not enabled

DNS responses unsigned. Cache-poisoning vulnerable.

SSL Certificate

Let's Encrypt

Valid 10 Jun 2026 to 8 Sep 2026

Certificate as captured in this snapshot, not a live check.

Domain Age

2 days

Registered Jun 2026

Email Security

✗

SPF Not published. Your domain can be spoofed in phishing emails.

DKIM Not detected at common selectors. Your provider may use a custom one.

✗

DMARC Not published. Receivers fall back to permissive defaults.

MTA-STS Not deployed. Mail to your domain can be downgraded to plaintext en route.

TLS-RPT Not configured. You won't hear about silent SMTP TLS handshake failures.

Storage (2)

Cookies (2)

Name	Lifetime	Detected as
_ga	1y	Google Analytics
_ga_S4Q61J7JTP	1y	Google Analytics

Readiness Breakdown How?

✓ Custom title and meta description

⚠

Open Graph tags (title, image, description) (partial) missing og:image

✓ Twitter card meta tags

✓ Canonical URL declared

✓ Responsive viewport meta tag

✓ Favicon present

✓ Semantic HTML (nav, main, article)

⚠

Page title is 70 characters (advisory) Google only shows about 60 characters of the title in search results; aim for 50–60 to keep the whole thing visible.

Performance How?

260 ms Server response

63% Faster than peers

588 ms Largest contentful paint

0.02 Cumulative layout shift

954 KB Page weight

1 KB Image weight

3 Third-party domains

0 Console errors

0 Failed requests

⚠ 1 images: 1 oversized, 1 without width/height

Indicative grade from a single automated render, not a substitute for Lighthouse or field data, and not part of the StackScope score.

Vibe Score Breakdown How?

Signal	Points
AI writing signals	+5
AI iconography signals	+3

This score is based on structural patterns and is not definitive. Many legitimate sites may trigger signals, and AI-built sites may go undetected. It should be treated as an indicator, not a verdict.

AI Stance

No AI stance declared

✗ llms.txt published

✓ No AI bots blocked in robots.txt

Content-Signal

? No directive declared

Link headers

? None advertised

Well-Known Files

✓ robots.txt

✓ sitemap.xml (32 URLs)

✗ security.txt

✗ llms.txt

✗ ads.txt

✗ humans.txt

Legal

? Privacy Policy not detected

? Terms of Service not detected

? Consent manager not detected

Analytics detected; tracking fires without visitor opt-in.

Detection works best on English language sites.

Security Headers (1/6)

✗

Referrer-Policy

✗

X-Frame-Options

✗

Permissions-Policy experimental (check browser support)

✗

X-Content-Type-Options

✗

Content-Security-Policy

✓

Strict-Transport-Security

–

X-XSS-Protection deprecated (use Content-Security-Policy)

Build

✓ HTML minified

✗ CSS minified

✗ JS minified

2 JS files

2 CSS files

3 Third-party domains

Brand Colours

Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.