Grade Calculator

Calculate Grade™ is a free online grade calculator to calculate final grades, percentages, GPA, assignment scores, and exam results quickly and easily.

Education

Added August 25, 2026 · Last analysed August 25, 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 25 August 2026; the live site may have changed since.

Grade Calculator is largely in shape, with complete legal pages, a thorough launch checklist, and clean crawl signals. Main gaps: missing several security headers and incomplete email security.

Launched on Product Hunt on August 25, 2026. The site is hosted on Hostinger, with a domain registered 8 weeks before launch. The crawl picked up 9 technologies on this site, covering wordpress plugin, DNS providers, business email, and hosting. The stack includes Google Search Console, Google Tag Manager, and Hostinger.

For context, it's on one of the most common stacks we track, shared by 1,216 launches.

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

7.6

StackScope Score

Good

100/100 Launch Readiness

Launch ready

1/6 Security Headers

Poor

3/3 Legal

Complete

2/2 Crawl files

Complete

86/100 Performance

Fast

Vibe Score 5 · 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 (9)

Infrastructure

DNS	Hostinger DNS
Hosting	Hostinger (2)
Protocol	HTTP/3
Server	PHP

Business email	Hostinger Email

Build & Framework

WordPress plugin	Kadence
	Site Kit by Google

Analytics & Marketing

SEO	Google Search Console
Tag management	Google Tag Manager

Infrastructure

Network

ACCELERATED-IT - firstcolo GmbH, DE

AS31400 · DE

DNS

Hostinger DNS

Authoritative nameserver

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 29 Jun 2026 to 27 Sep 2026

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

Domain Age

1 month

Registered Jun 2026 · Spaceship, Inc.

Email Security

✓

SPF ~all Soft-fail (~all). Common and accepted.

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

✗

DMARC p=none 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)

✓ Twitter card meta tags

✓ Canonical URL declared

✓ Responsive viewport meta tag

✓ Favicon present

✓ Semantic HTML (nav, main, article)

Performance How?

256 ms Server response

54% Faster than peers

2636 ms Largest contentful paint

0.01 Cumulative layout shift

253 KB Page weight

131 KB Image weight

2 Third-party domains

0 Console errors

0 Failed requests

⚠ 2 images: 1 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 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

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 (3 URLs)

✗ security.txt

✗ llms.txt

✗ ads.txt

✗ humans.txt

Legal

✓ Privacy Policy

/privacy-policy/

✓ Terms of Service

/terms-conditions/

56% unique

Mentions:

Cookies DPO Do Not Sell

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

✓ Code splitting

9 JS files

1 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.