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CalcSuite

CalcSuite offers a comprehensive collection of free online calculators for finance, health, math, and more.

India Estimated origin: India

Added April 17, 2026 · Last analysed April 17, 2026 · via · 80% unique tagline

Own this Launch?
Screenshot of CalcSuite

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 17 April 2026; the live site may have changed since.

CalcSuite ships with the launch fundamentals in place, with complete legal pages, a thorough launch checklist, and fast page loads. What needs work: missing several security headers and incomplete email security.

Launched on Product Hunt on April 17, 2026. The site is served through Cloudflare, with a domain registered 12 weeks before launch. We've detected 14 technologies on this site, covering advertising, analytics, CDN, and consent tooling. The stack includes Google Funding Choices, Tailwind CSS, and Cloudflare.

It's running the same core stack as 5,950 other launches.

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

8.1
StackScope Score
Excellent
100/100 Launch Readiness
Launch ready
2/6 Security Headers
Weak
3/3 Legal
Complete
2/2 Crawl files
Complete
Vibe Score 20 · Few AI signals
How much the site looks AI-generated. Informational pattern-match signal, not a verdict. Does not feed the StackScope Score. See which fingerprints fired →

Tech Stack (14)

Infrastructure
CDN Cloudflare (3)
DNS Cloudflare DNS
Protocol HTTP/3 (2)
Email
Email forwarding Cloudflare Email Routing (2)
Build & Framework
CSS framework Tailwind CSS
Developer tools Vite
Font Google Fonts
Analytics & Marketing
Advertising Google Ads
Google AdSense
Analytics Cloudflare Web Analytics
Google Analytics (2)
Consent Google Funding Choices (2)
SEO Google Search Console
Tag management Cloudflare Zaraz

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 10 Apr 2026 to 9 Jul 2026
Certificate as captured in this snapshot, not a live check.
Domain Age
5 months
Registered Jan 2026 · HOSTINGER operations, UAB

Email Security

✓
SPF ~all Soft-fail (~all). Common and accepted.
?
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.

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)

Vibe Score Breakdown How?

SignalPoints
AI palette signals +5
AI writing signals +5
AI code-structure signals +10

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 but publishes an llms.txt
✓ 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 (126 URLs)
✗ security.txt
✓ llms.txt
✓ ads.txt
✗ humans.txt

Legal

✓ Privacy Policy
/calculator/body-fat
✓ Terms of Service
/terms
✓ Consent manager: Google Funding Choices
90% unique
Mentions:
Updated: 4/16/2026

Security Headers (2/6)

✓
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)

Performance

152ms response time
Faster than 81% of sites
8 third-party domains loaded

Build

✓ Code splitting
10 JS files
2 CSS files
8 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.