Math Notebook

Free online handwriting math practice notebook. Practice vertical addition, subtraction, multiplication, and division with interactive canvas.

Education

Added August 12, 2026 · Last analysed August 12, 2026 · via

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

Math Notebook is early-stage. What needs work: missing several security headers, incomplete legal pages, and no robots.txt or sitemap.

Launched on Product Hunt on August 12, 2026. The site is hosted on Google Cloud, with a domain registered in 2020. We've detected 6 technologies on this site, covering analytics, CSS frameworks, developer tools, and hosting. The stack includes Tailwind CSS, Google Analytics, and Google Cloud.

It's running the same core stack as 716 other launches.

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

1.8

StackScope Score

Poor

64/100 Launch Readiness

Well prepared

0/6 Security Headers

Poor

0/3 Legal

Missing

0/2 Crawl files

Missing

100/100 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

Hosting	Google Cloud

Build & Framework

CSS framework	Tailwind CSS (3)
Developer tools	Vite
UI library	Lucide Icons

Analytics & Marketing

Analytics	Google Analytics (4)
Tag management	Google Tag Manager (2)

Infrastructure

Network

GOOGLE - Google LLC, US

AS15169 · US

DNSSEC

Enabled

DNSKEY records published. DNS responses signed.

Green hosting

Green hosted

Host runs on renewable energy. Data from The Green Web Foundation.

SSL Certificate

Google Trust Services

Valid 11 Aug 2026 to 9 Nov 2026

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

Domain Age

6.1 years

Registered Jul 2020 · HOSTINGER operations, UAB

Email Security

✓

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

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_944Y0L5627	1y	Google Analytics

Readiness Breakdown How?

✓ Custom title and meta description

✓ Responsive viewport meta tag

✓ Favicon present

✓ Semantic HTML (nav, main, article)

⚠

Page title is 72 characters (advisory) Google only shows about 60 characters of the title in search results; aim for 50–60 to keep the whole thing visible.

- Open Graph tags (title, image, description)

- Canonical URL declared

- Twitter card meta tags

Performance How?

192 ms Server response

71% Faster than peers

1168 ms Largest contentful paint

0.00 Cumulative layout shift

801 KB Page weight

4 Third-party domains

1 Console errors

1 Failed requests

Broken first-party requests (1), worth fixing

404 /index.css

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

✗ security.txt

✗ llms.txt

✗ ads.txt

✗ humans.txt

Legal

? Privacy Policy not detected

? Terms of Service not detected

? Consent manager not detected

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

Detection works best on English language sites.

Security Headers (0/6)

✗

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

3 JS files

1 CSS files

4 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.