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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Frizzle

Grade math assignments in seconds, not hours with AI that understands mathematical reasoning. Save time on grading and provide instant feedback to students.

Education

Added July 2, 2026 · Last analysed July 2, 2026 · via PeerPush · 71% 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 2 July 2026; the live site may have changed since.

Frizzle scores highly overall, with complete legal pages, a complete set of security headers, and a thorough launch checklist. Visible gaps: tracking cookies set before any opt-in.

Launched on PeerPush on July 2, 2026. The site is hosted on Vercel, with a domain registered in 2001. Our crawler found 23 technologies on this site, covering business email, analytics, ui library, and auth. The stack includes Google Sign-In, Next.js, and React.

It's also one of just 2 launches we've crawled on this exact stack 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 →

10.0
StackScope Score
Excellent
100/100 Launch Readiness
Launch ready
3/3* Legal
Complete*
2/2 Crawl files
Complete
Vibe Score 40 · Some 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 (23) · Indie stack

Infrastructure
DNS Vercel DNS
Hosting Vercel (2)
Security HSTS
Email
Business email GoDaddy Email
Google Workspace (3)
Microsoft 365
Transactional email Resend
Build & Framework
Auth Google Sign-In (3)
BaaS Supabase
CMS Sanity
Developer tools Edlink
Font Google Fonts
Framework React
JavaScript library Apollo Client
Meta-framework Next.js (5)
UI library Lucide Icons
shadcn/ui
Analytics & Marketing
Analytics PostHog (6)
Vercel Analytics medium
SEO Google Search Console
Social Hacker News
Commerce & Payments
Payments Stripe
Business Tools
Scheduling Calendly

Infrastructure

Network
AS16509 · US
DNS
Vercel 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 30 Jun 2026 to 28 Sep 2026
Certificate as captured in this snapshot, not a live check.
Domain Age
25 years
Registered Jul 2001 · GoDaddy.com, LLC

Email Security

SPF ~all Soft-fail (~all). Common and accepted.
DKIM Detected via known email provider
DMARC p=quarantine Quarantine (moderate)
?
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 (5)

Cookies (1)
NameLifetimeDetected as
ph_phc_MQtlQY6GYdbwAGohHHxSuuTxMDY7zwsdkMhz2Dz50W6_posthog 1y PostHog
Local storage (1)
KeySizeDetected as
ph_phc_MQtlQY6GYdbwAGohHHxSuuTxMDY7zwsdkMhz2Dz50W6_posthog 1.4 KB PostHog
Session storage (3)
KeySizeDetected as
ph_phc_MQtlQY6GYdbwAGohHHxSuuTxMDY7zwsdkMhz2Dz50W6_posthog 388 B PostHog
ph_phc_MQtlQY6GYdbwAGohHHxSuuTxMDY7zwsdkMhz2Dz50W6_primary_window_exists 4 B PostHog
ph_phc_MQtlQY6GYdbwAGohHHxSuuTxMDY7zwsdkMhz2Dz50W6_window_id 38 B PostHog

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?

463 ms Server response
39% Faster than peers
728 ms Largest contentful paint
0.06 Cumulative layout shift
1.7 MB Page weight
1 KB Image weight
5 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
AI CSS signals +10
AI copy signals +5
AI onboarding signals +5
AI palette signals +5
AI typography 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

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

Well-Known Files

robots.txt
sitemap.xml (29 URLs)
security.txt
llms.txt
ads.txt
humans.txt
Privacy Policy
/privacy
Terms of Service
/terms
? Consent manager not detected
Analytics set tracking cookies on our visit, with no opt-in step.
90% unique

Security Headers (6/6)

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

Build

Code splitting
16 JS files
3 CSS files
5 Third-party domains

Brand Colours

App Manifest

Frizzle - AI-Powered Math Grading
display: standalone 5 icons
theme #DC2626
education productivity utilities
Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.