Calnex

Calnex is a privacy-first online calculator platform. All calculations run locally in your browser — zero data upload, no registration needed. Covering finance, health, math, physics, conversions, and more.

Productivity

calnex.pro · Added June 22, 2026 · Last analysed June 22, 2026 · via · 25% unique tagline (similar to CalcaTools)

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 22 June 2026; the live site may have changed since.

Calnex looks production-ready overall, with complete legal pages, a thorough launch checklist, and clean crawl signals. Worth fixing first: missing several security headers and no email security records.

Launched on Product Hunt on June 22, 2026. The site is hosted on Cloudflare in the United States. We've detected 8 technologies on this site, covering analytics, CDN, CSS frameworks, and DNS providers. The stack includes Next.js, React, and Tailwind CSS.

It's running the same core stack as 2,871 other launches.

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

6.9

StackScope Score

Good

90/100 Launch Readiness

Launch ready

0/6 Security Headers

Poor

3/3* Legal

Complete*

2/2 Web Standards

Complete

81/100 Performance

Fast

Vibe Score 30 · Some AI signals

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

Tech Stack (8)

Infrastructure

CDN	Cloudflare
DNS	Cloudflare DNS
Protocol	HTTP/3

Build & Framework

CSS framework	Tailwind CSS
Framework	React
Meta-framework	Next.js (2)

Analytics & Marketing

Analytics	Cloudflare Web Analytics
SEO	Google Search Console

Infrastructure

Network

CLOUDFLARENET - Cloudflare, Inc., US

AS13335 · US

DNS

Cloudflare DNS

Authoritative nameserver

DNSSEC

Enabled

DNSKEY records published. DNS responses signed.

SSL Certificate

Google Trust Services

Valid 2 Jun 2026 to 31 Aug 2026

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

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 (1)

Local storage (1)

Key	Size	Detected as
calnex-locale-storage	47 B	-

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)

⚠

Meta description is 206 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?

1802 ms Server response

4% Faster than peers

552 ms Largest contentful paint

0.00 Cumulative layout shift

979 KB Page weight

61 KB Image weight

2 Third-party domains

0 Console errors

0 Failed requests

⚠ 2 images: 2 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
AI CSS signals	+15
AI palette signals	+5
AI writing signals	+5
AI layout 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 (6564 URLs)

✗ 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.

96% unique

Mentions:

Security Headers (0/6)

✗

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

✓ Code splitting

15 JS files

3 CSS files

2 Third-party domains

Brand Colours

App Manifest

Calnex

display: standalone 2 icons

theme #0f172a

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