Calcam

Browse 50 working calculator templates across revenue, pricing, marketing, SaaS, finance, productivity, HR, infrastructure, and e-commerce. Pick one, edit the offer, and publish.

Added August 7, 2026 · Last analysed August 7, 2026 · via

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 7 August 2026; the live site may have changed since.

Calcam ships with the launch fundamentals in place, with complete legal pages, a complete set of security headers, and a thorough launch checklist. Worth fixing first: incomplete email security.

Launched on Product Hunt on August 7, 2026. The site is hosted on Railway and served through Cloudflare, with a domain registered 3 months before launch. The crawl picked up 12 technologies on this site, covering ui library, analytics, CDN, and CSS frameworks. The stack includes Next.js, React, and Tailwind CSS.

For context, it's running the same core stack as 501 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 →

9.7

StackScope Score

Excellent

90/100 Launch Readiness

Launch ready

6/6 Security Headers

Strong

3/3 Legal

Complete

2/2 Crawl files

Complete

100/100 Performance

Fast

Vibe Score 10 · 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 (12)

Infrastructure

CDN	Cloudflare
Hosting	Railway
Protocol	HTTP/3
Security	HSTS

Build & Framework

CSS framework	Tailwind CSS
Framework	React
JavaScript library	Zod
Meta-framework	Next.js (5)
UI library	Lucide Icons
UI library	shadcn/ui

Analytics & Marketing

Analytics	Umami

Business Tools

Error tracking	Sentry

Infrastructure

Network

CLOUDFLARENET - Cloudflare, Inc., US

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

Let's Encrypt

Valid 2 Jul 2026 to 30 Sep 2026

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

Domain Age

3 months

Registered May 2026 · NameCheap, Inc.

Email Security

✓

SPF ~all (via apex getcalcam.com) Soft-fail (~all). Common and accepted.

DKIM Not detected at common selectors. Your provider may use a custom one.

✗

DMARC p=none (via apex getcalcam.com) None (p=none). Monitoring only.

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 (0)

This site uses no client-side storage we could detect on page load.

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)

⚠

Page title is 70 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 178 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?

144 ms Server response

82% Faster than peers

368 ms Largest contentful paint

0.00 Cumulative layout shift

748 KB Page weight

2 Third-party domains

0 Console errors

0 Failed requests

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 palette signals	+5
AI writing 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 (65 URLs)

✗ security.txt

✗ llms.txt

✗ ads.txt

✗ humans.txt

Legal

✓ Privacy Policy

/privacy

✓ Terms of Service

/terms

? Analytics present, but it set no tracking cookies on our visit (it may be opt-in-gated).

92% unique

Mentions:

Cookies Do Not Sell

Security Headers (6/6)

✓

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

24 JS files

2 CSS files

2 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.