DualDev

Real-time 1v1 coding live battles with an AI judge

main.d1v48houk62dts.amplifyapp.com · Added June 9, 2026 · Last analysed June 9, 2026 · via · 75% 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 9 June 2026; the live site may have changed since.

DualDev is early-stage. Main gaps: missing several security headers, incomplete legal pages, and no robots.txt or sitemap.

Launched on Product Hunt on June 9, 2026. The site is hosted on Amazon.com in the United States. We've detected 6 technologies on this site, covering build tooling, CDN, cloud, and CSS frameworks. The stack includes Tailwind CSS, Vite, and Amazon Web Services.

It's on one of the most common stacks we track, shared by 127 launches.

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

1.2

StackScope Score

Poor

41/100 Launch Readiness

Partially ready

0/6 Security Headers

Poor

0/3 Legal

Missing

0/2 Web Standards

Missing

100/100 Performance

Fast

Vibe Score 0 · No AI signals

Informational pattern-match signal. Does not feed the StackScope Score. See which fingerprints fired →

Tech Stack (6) · Scale-up stack

Infrastructure

CDN	AWS CloudFront
Cloud	Amazon Web Services
Hosting	AWS S3
Protocol	HTTP/3

Build & Framework

Build tool	Vite
CSS framework	Tailwind CSS

Infrastructure

Network

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

AS16509 · US

DNSSEC

Not enabled

DNS responses unsigned. Cache-poisoning vulnerable.

SSL Certificate

Amazon

Valid 30 May 2026 to 13 Dec 2026

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

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)

Local storage (1)

Key	Size	Detected as
codejudge-storage	593 B	-

Readiness Breakdown How?

⚠

Custom title and meta description (partial) missing 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?

343 ms Server response

52% Faster than peers

664 ms Largest contentful paint

0.00 Cumulative layout shift

158 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 (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

✓ HTML minified

✗ CSS minified

✗ JS minified

1 JS files

1 CSS files

0 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.