New: The State of Indie Launches: June 2026. Who adopts a piece of infrastructure tells you how new it is. Read

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ClassCub

Find kids activities and classes near you - filtered by your child's age. Swimming, dance, martial arts, coding, music & more in 150+ US cities. Free for parents.

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Added July 4, 2026 · Last analysed July 4, 2026 · via PeerPush · 57% unique tagline

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

ClassCub scores highly overall, with complete legal pages, a thorough launch checklist, and clean crawl signals. Main gaps: no Permissions-Policy and no email security records.

Launched on PeerPush on July 4, 2026. The site is served through Cloudflare, with a domain registered 3 months before launch. Our crawler found 10 technologies on this site, covering auth, backend framework, CDN, and developer tools. The stack includes Google Sign-In, Stimulus, and Cloudflare.

It's also one of only 15 launches we've crawled running Stimulus and more locked down than the typical PeerPush launch.

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

9.5
StackScope Score
Excellent
100/100 Launch Readiness
Launch ready
3/3 Legal
Complete
2/2 Crawl files
Complete
Vibe Score 55 · Many 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
DNS Cloudflare DNS
Protocol HTTP/3
Security HSTS
Build & Framework
Auth Google Sign-In
Developer tools Vite
Font Google Fonts
Framework Stimulus medium
Analytics & Marketing
SEO Google Search Console
Other
Backend framework Rails

Infrastructure

Network
AS13335 · US
DNS
Cloudflare 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 23 May 2026 to 21 Aug 2026
Certificate as captured in this snapshot, not a live check.
Domain Age
3 months
Registered Mar 2026 · Porkbun LLC

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)

Cookies (1)
NameLifetimeDetected as
_app_session session -

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)
Page title is 63 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 162 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?

225 ms Server response
67% Faster than peers
388 ms Largest contentful paint
0.01 Cumulative layout shift
437 KB Page weight
3 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?

SignalPoints
Placeholder branding +10
AI code-structure signals +10
AI asset signals +10
AI CSS signals +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

Welcomes AI crawlers
llms.txt published
No AI bots blocked in robots.txt
? No directive declared
? None advertised

Well-Known Files

robots.txt
sitemap.xml (15964 URLs)
security.txt
llms.txt
ads.txt
humans.txt
Privacy Policy
/privacy
Terms of Service
/terms
88% unique

Security Headers (5/6)

Permissions-Policy experimental (check browser support)
X-XSS-Protection deprecated (use Content-Security-Policy)

Build

1 JS files
3 CSS files
3 Third-party domains

Brand Colours

App Manifest

ClassCub
display: standalone 2 icons
theme #2D6A4F
Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.