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CalcVerse

605+ free online calculators for finance, health, math, science, geometry, and everyday life. Instant results, no sign-up required.

Added July 1, 2026 · Last analysed July 1, 2026 · via · 33% unique tagline (similar to Calculator Pro)

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 1 July 2026; the live site may have changed since.

CalcVerse covers some of the launch checklist, with a thorough launch checklist and clean crawl signals. Worth fixing first: missing several security headers, incomplete legal pages, and no email security records.

Launched on Product Hunt on July 1, 2026. The site is served through Cloudflare. Our crawler found 15 technologies on this site, covering advertising, ui library, AI builders, and analytics. The stack includes Google Funding Choices, React, and Tailwind CSS.

It's also running the same core stack as 288 other launches.

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

Vibe Score 100 · Strong 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 (15)

Infrastructure
CDN Cloudflare
Security HSTS
Build & Framework
CSS framework Tailwind CSS
Developer tools Vite
Font Google Fonts
Framework React
JavaScript library Wouter
UI library Lucide Icons
shadcn/ui
Analytics & Marketing
Advertising Google Ads
Google AdSense (2)
Analytics Umami (2)
Consent Google Funding Choices (2)
SEO Google Search Console
AI & Emerging
AI builder Manus (2)

Infrastructure

Network
AS13335 · US
DNSSEC
Not enabled
DNS responses unsigned. Cache-poisoning vulnerable.
Green hosting
Green hosted
Host runs on renewable energy. Data from The Green Web Foundation.
SSL Certificate
Google Trust Services
Valid 25 Jun 2026 to 23 Sep 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 (3)

Cookies (1)
NameLifetimeDetected as
FCCDCF 1y Google Funding Choices
Local storage (2)
KeySizeDetected as
calcverse_click_counts 2 B -
calcverse_click_week 8 B -

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)

Performance How?

581 ms Server response
29% Faster than peers
1844 ms Largest contentful paint
0.12 Cumulative layout shift
2.1 MB Page weight
967 KB Image weight
8 Third-party domains
0 Console errors
0 Failed requests

18 images: 5 oversized, 18 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?

SignalPoints
Placeholder branding +10
AI CSS signals +10
AI palette signals +5
AI writing signals +3
AI iconography signals +5
Recognised AI builder signature +100
AI typography signals +15
Stock-image social proof +15

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
? No directive declared
? None advertised

Well-Known Files

robots.txt
sitemap.xml (624 URLs)
security.txt
llms.txt
ads.txt
humans.txt
? Privacy Policy not detected
? Terms of Service not detected
Consent manager: Google Funding Choices
Detection works best on English language sites.

Security Headers (2/6)

Permissions-Policy experimental (check browser support)
X-XSS-Protection deprecated (use Content-Security-Policy)

Build

Code splitting
6 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.