Doublethe

A double pendulum simulator and parameter space explorer

Added July 10, 2026 · Last analysed July 10, 2026 · via Hacker News · 62% unique tagline

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

Doublethe is missing several launch fundamentals. What needs work: missing several security headers, incomplete legal pages, and no robots.txt or sitemap.

Launched on Hacker News on July 10, 2026. The site is hosted on Vercel, with a domain registered 12 months before launch. Our crawler found 6 technologies on this site, covering CSS frameworks, developer tools, DNS providers, and email forwarding. The stack includes Tailwind CSS, HSTS, and Namecheap DNS.

It's also running the same core stack as 2,347 other launches.

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

2.0

StackScope Score

Poor

52/100 Launch Readiness

Partially ready

1/6 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

DNS	Namecheap DNS
Hosting	Vercel
Security	HSTS

Email forwarding	Namecheap Email Forwarding (2)

Build & Framework

CSS framework	Tailwind CSS
Developer tools	Vite

Infrastructure

Network

AMAZON-02 - Amazon.com, Inc., US

AS16509 · US

DNS

Namecheap 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 19 May 2026 to 17 Aug 2026

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

Domain Age

12 months

Registered Jul 2025 · NameCheap, 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 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 (0)

This site uses no client-side storage we could detect on page load.

Readiness Breakdown How?

✓ Custom title and meta description

✓ Responsive viewport meta tag

✓ Favicon present

- Open Graph tags (title, image, description)

- Canonical URL declared

- Twitter card meta tags

- Semantic HTML (nav, main, article)

Performance How?

96 ms Server response

95% Faster than peers

192 ms Largest contentful paint

0.01 Cumulative layout shift

208 KB Page weight

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.

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

Detection works best on English language sites.

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

1 JS files

1 CSS files

0 Third-party domains

App Manifest

Double the pendulums, double the fun

display: standalone 2 icons

theme #ffffff

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