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Rizin

Now on the App Store for iPhone. An adaptive AI personal trainer that builds and updates your plan around your goals, schedule, equipment, injuries, and health insights.

Health

Added September 3, 2026 · Last analysed September 3, 2026 · via Hacker News

StackScope records what new websites are built with, the week they launch. Most we find ourselves, by watching public internet infrastructure for brand-new sites; the rest come from Product Hunt, Hacker News and PeerPush. We crawled this one for its tech stack and scored it for launch readiness: DNS, security headers, SEO basics. This page is what we saw on 3 September 2026; the live site may have changed since.

Every technology below links to its own page: which other new sites launched with it. Vendors and agencies watch those pages with Stackdar and hear about new adopters the week they ship, from £15 a month.

Rizin scores highly overall, with complete legal pages, a complete set of security headers, and a thorough launch checklist. Main gaps: incomplete email security.

Launched on Hacker News on September 2, 2026. The site is hosted on Railway and served through Cloudflare, with a domain registered 11 months before launch. We've detected 26 technologies on this site, covering ui library, ai api, AI builders, and analytics. The stack includes Capacitor, Google, and Tailwind CSS.

It's the only launch we've crawled on this exact stack and more locked down than the typical Hacker News launch.

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

9.7
StackScope Score
Excellent
90/100 Launch Readiness
Launch ready
3/3 Legal
Complete
2/2 Crawl files
Complete
Vibe Score 100 · Strong 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 (26) · Indie stack

Infrastructure
CDN Cloudflare (2)
DNS Cloudflare DNS
Hosting Railway
Security HSTS
Email
Email forwarding Cloudflare Email Routing (2)
Transactional email Resend
Build & Framework
BaaS Supabase
CSS framework Tailwind CSS
Data API Open Food Facts
Developer tools Vite
Font Google Fonts
Framework Capacitor
JavaScript library Motion
Media Unsplash
Mobile Apple App Store
UI library Lucide Icons
shadcn/ui
Analytics & Marketing
Analytics Google Analytics (4)
Consent Google
SEO Google Search Console
Social Google Search
Tag management Google Tag Manager (3)
Commerce & Payments
Payments Stripe
AI & Emerging
AI API fal.ai
AI builder Replit
Other
Backend framework Express

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 29 Jul 2026 to 27 Oct 2026
Certificate as captured in this snapshot, not a live check.
Domain Age
11 months
Registered Oct 2025 · GoDaddy.com, LLC

Email Security

SPF ~all Soft-fail (~all). Common and accepted.
DKIM Detected via known email provider
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 (1)

Cookies (1)
NameLifetimeDetected as
cf_clearance 12mo Cloudflare

Readiness Breakdown How?

Custom title and meta description
Open Graph tags (title, image, description) (partial) missing og:image
Twitter card meta tags
Canonical URL declared
Responsive viewport meta tag
Favicon present
Semantic HTML (nav, main, article)
Page title is 69 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 192 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?

264 ms Server response
53% Faster than peers
1908 ms Largest contentful paint
0.03 Cumulative layout shift
6.0 MB Page weight
3.2 MB Image weight
4 Third-party domains
1 Console errors
1 Failed requests

14 images: 10 oversized, 12 without width/height, 2 missing alt text

Broken first-party requests (1), worth fixing
  • 401 /api/auth/user

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 palette signals +5
AI writing signals +5
Recognised AI builder signature +100
AI layout 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

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 (98 URLs)
security.txt
llms.txt
ads.txt
humans.txt
Privacy Policy
/legal/privacy-policy
Terms of Service
/legal/terms-of-use
Consent manager: Google
94% unique

Security Headers (6/6)

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

Build

2 JS files
2 CSS files
4 Third-party domains

Brand Colours

App Manifest

Rizin - AI Fitness Coach
display: standalone 6 icons
theme #F9C74F
health fitness lifestyle
Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.