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Claculex

Free online scientific calculator with sin, cos, tan, log, ln, square root, exponents, π, e, factorial and memory. Works on mobile and desktop. No download required.

Productivity

Added April 28, 2026 · Last analysed April 28, 2026 · via

Own this Launch?
Screenshot of Claculex

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

Claculex is partway there, with a thorough launch checklist, fast page loads, and clean crawl signals. Main gaps: missing several security headers, incomplete legal pages, and no email security records.

Launched on Product Hunt on April 28, 2026. The site is served through Cloudflare, with a domain registered 2 days before launch. The crawl picked up 10 technologies on this site, covering advertising, CDN, consent tooling, and CSS frameworks. The stack includes Google Funding Choices, Tailwind CSS, and Cloudflare.

For context, it's on one of the most common stacks we track, shared by 5,949 launches.

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

5.9
StackScope Score
Fair
100/100 Launch Readiness
Launch ready
2/6 Security Headers
Weak
0/3 Legal
Missing
2/2 Crawl files
Complete
Vibe Score 35 · Some 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 (10)

Infrastructure
CDN Cloudflare (3)
DNS Cloudflare DNS
Protocol HTTP/3 (2)
Build & Framework
CSS framework Tailwind CSS
Developer tools Vite
Font Inter Font
UI library shadcn/ui
Analytics & Marketing
Advertising Google Ads
Google AdSense (2)
Consent Google Funding Choices

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 27 Apr 2026 to 26 Jul 2026
Certificate as captured in this snapshot, not a live check.
Domain Age
2 months
Registered Apr 2026 · Name.com, Inc.

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)
KeySizeDetected as
google_auto_fc_cmp_setting 3 B Google Funding Choices

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)
⚠
Meta description is 238 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.

Vibe Score Breakdown How?

SignalPoints
AI CSS signals +10
AI palette signals +5
AI writing signals +5
Implausible social-proof claim +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

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 (25 URLs)
✗ security.txt
✗ llms.txt
✗ ads.txt
✗ humans.txt

Legal

? 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)

✓
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

117ms response time
Faster than 90% of sites
3 third-party domains loaded

Build

3 JS files
1 CSS files
3 Third-party domains

App Manifest

Claculex
display: standalone 2 icons
theme #000000
Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.