App-Calc

free online calculators covering personal finance, health

Finance

Added July 6, 2026 · Last analysed July 6, 2026 · via · 43% unique tagline

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

App-Calc is missing several launch fundamentals. What needs work: missing several security headers, incomplete legal pages, and no robots.txt.

Launched on Product Hunt on July 6, 2026. The site is hosted on Netlify, with a domain registered 2 weeks before launch. Our crawler found 6 technologies on this site, covering analytics, DNS providers, hosting, and security. The stack includes Cloudflare DNS, Google Analytics, and Google Search Console.

It's also running the same core stack as 1,412 other launches.

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

3.9

StackScope Score

Poor

41/100 Launch Readiness

Partially ready

1/6 Security Headers

Poor

2/3 Legal

Partial

1/2 Crawl files

Partial

93/100 Performance

Fast

Vibe Score 0 · No 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 (6)

Infrastructure

DNS	Cloudflare DNS
Hosting	Netlify
Security	HSTS

Analytics & Marketing

Analytics	Google Analytics (4)
SEO	Google Search Console
Tag management	Google Tag Manager medium

Infrastructure

Network

AMAZON-02 - Amazon.com, Inc., US

AS16509 · US

DNS

Cloudflare DNS

Authoritative nameserver

DNSSEC

Not enabled

DNS responses unsigned. Cache-poisoning vulnerable.

Green hosting

Not green hosted

No green-energy record. Data from The Green Web Foundation.

SSL Certificate

Let's Encrypt

Valid 19 Jun 2026 to 17 Sep 2026

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

Domain Age

21 days

Registered Jun 2026 · Cloudflare, 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 (2)

Cookies (2)

Name	Lifetime	Detected as
_ga	1y	Google Analytics
_ga_B836ZBG0F8	1y	Google Analytics

Readiness Breakdown How?

⚠

Custom title and meta description (partial) missing meta description

✓ Responsive viewport meta tag

✓ Semantic HTML (nav, main, article)

- Open Graph tags (title, image, description)

- Canonical URL declared

- Twitter card meta tags

- Favicon present

Performance How?

806 ms Server response

17% Faster than peers

208 ms Largest contentful paint

0.00 Cumulative layout shift

165 KB Page weight

1 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.

AI Stance

No AI stance declared

✗ llms.txt published

✓ No AI bots blocked in robots.txt

Content-Signal

? No directive declared

Link headers

? None advertised

Well-Known Files

✗ robots.txt

✓ sitemap.xml (20 URLs)

✗ security.txt

✗ llms.txt

✗ ads.txt

✗ humans.txt

Legal

? Privacy Policy not detected

✓ Terms of Service

/terms-and-disclaimer

? Consent manager not detected

Analytics set tracking cookies on our visit, with no opt-in step.

Security Headers (1/6)

✗

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

1 JS files

0 CSS files

1 Third-party domains

Brand Colours

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