WebCalcSys

WebCalcSys is the best free online calculator ecosystem featuring 1000+ calculators for finance, health, math, science, construction, conversions, and everyday life. Use our free online calculator tools including BMI calculator, scientific calculator, online calculator with fractions, and compound i...

webcalcsys.com · Added June 8, 2026 · Last analysed June 8, 2026 · via · 50% 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 8 June 2026; the live site may have changed since.

WebCalcSys ships with the launch fundamentals in place, with complete legal pages and a thorough launch checklist. Worth fixing first: missing Content-Security-Policy and Strict-Transport-Security, no sitemap, and analytics without a consent banner.

Launched on Product Hunt on June 8, 2026. The site is hosted on Cloudflare in the United States, with a domain registered the day of launch. Our crawler found 9 technologies on this site, covering analytics, CDN, CSS frameworks, and DNS providers. The stack includes Astro, Tailwind CSS, and Cloudflare.

Notably, it's running the same core stack as 239 other launches and tighter on security headers than most Product Hunt launches.

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

8.0

StackScope Score

Excellent

100/100 Launch Readiness

Launch ready

4/6 Security Headers

Decent

3/3* Legal

Complete*

1/2 Web Standards

Partial

92/100 Performance

Fast

Vibe Score 25 · Some AI signals

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

Tech Stack (9)

Infrastructure

CDN	Cloudflare
DNS	Cloudflare DNS
Protocol	HTTP/3

Build & Framework

CSS framework	Tailwind CSS
Font	Google Fonts
Meta-framework	Astro

Analytics & Marketing

Analytics	Google Analytics (3)
SEO	Google Search Console

Business Tools

SaaS	Zoho

Infrastructure

Network

CLOUDFLARENET - Cloudflare, Inc., US

AS13335 · US

DNS

Cloudflare DNS

Authoritative nameserver

DNSSEC

Not enabled

DNS responses unsigned. Cache-poisoning vulnerable.

SSL Certificate

Google Trust Services

Valid 7 Jun 2026 to 5 Sep 2026

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

Domain Age

6 days

Registered Jun 2026 · BigRock Solutions Ltd

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_MTPR8XYX4W	1y	Google Analytics

Readiness Breakdown How?

✓ Custom title and meta description

✓ Open Graph tags (title, image, description)

✓ Twitter card meta tags

✓ Canonical URL declared

✓ Responsive viewport meta tag

✓ Favicon present

✓ Semantic HTML (nav, main, article)

⚠

Page title is 78 characters (advisory) Google only shows about 60 characters of the title in search results; aim for 50–60 to keep the whole thing visible.

⚠

Meta description is 341 characters (advisory) Google only shows about 155–160 characters of the description in desktop search results (less on mobile); anything past that won't appear.

Performance How?

182 ms Server response

75% Faster than peers

772 ms Largest contentful paint

0.00 Cumulative layout shift

1.1 MB Page weight

52 KB Image weight

4 Third-party domains

1 Console errors

0 Failed requests

⚠ 1 images: 1 oversized

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
Placeholder branding	+10
AI palette signals	+5
AI writing signals	+5
AI iconography signals	+5

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

Blocks AI crawlers

✗ llms.txt published

✗ 9 AI bots blocked in robots.txt

Content-Signal

✗ ai-train = no

✓ search = yes

? ai-input (not declared)

Link headers

? None advertised

Well-Known Files

✓ robots.txt

✗ sitemap.xml

✗ security.txt

✗ llms.txt

✗ ads.txt

✗ humans.txt

Legal

✓ Privacy Policy

✓ Terms of Service

? Consent manager not detected

Analytics detected; tracking fires without visitor opt-in.

82% unique

Mentions:

Cookies Updated: June 6, 2026

Security Headers (4/6)

✓

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

1 JS files

3 CSS files

4 Third-party domains

Brand Colours

App Manifest

webcalcsys

display: standalone 2 icons

theme #ffffff

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