PolySub
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www.polysub.app
· Added June 18, 2026
· Last analysed June 18, 2026 · via 
· 86% 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 18 June 2026; the live site may have changed since.
PolySub is partway there, with complete legal pages and a thorough launch checklist. What needs work: missing several security headers, no robots.txt or sitemap, and incomplete email security.
Launched on Product Hunt on June 18, 2026. The site is hosted on Amazon.com in the United States, with a domain registered 3 months before launch. The crawl picked up 10 technologies on this site, covering baas, CSS frameworks, DNS providers, and business email. The stack includes Next.js, React, and Tailwind CSS.
For context, it's running the same core stack as 7,879 other launches.
If you own this site, refresh the snapshot and see the full fix list any time →
Tech Stack (10) · Indie stack
| DNS |
Cloudflare DNS
|
| Hosting |
Vercel
|
| Security | HSTS |
| Business email |
Cloudflare Email Routing
(2)
|
| Transactional email |
Resend
|
| BaaS |
Firebase
|
| CSS framework |
Tailwind CSS
|
| Framework |
React
|
| Meta-framework |
Next.js
(2)
|
| UI library |
shadcn/ui
|
Infrastructure
Email Security
Storage (2)
| Database | Version | Detected as |
|---|---|---|
| firebase-heartbeat-database | 1 | Firebase |
| firebaseLocalStorageDb | 1 | Firebase |
Readiness Breakdown How?
Performance How?
⚠ 1 images: 1 oversized, 1 without width/height
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?
| Signal | Points |
|---|---|
| AI CSS signals | +10 |
| AI writing 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.