GrainBook
GrainBook is a professional AI learning tool that helps you get smart summaries from various sources such as YouTube, podcasts, emails, and build your personal knowledge base to improve your learning efficiency.
grainbook.app
· Added June 13, 2026
· Last analysed June 13, 2026 · via 
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 13 June 2026; the live site may have changed since.
GrainBook looks production-ready overall, with complete legal pages, a thorough launch checklist, and clean crawl signals. What needs work: missing several security headers and incomplete email security.
Launched on Product Hunt on June 13, 2026. The site is hosted on Amazon.com in the United States, with a domain registered 4 months before launch. We've detected 11 technologies on this site, covering build tooling, CSS frameworks, DNS providers, and business email. The stack includes Tailwind CSS, Vite, and Cloudflare DNS.
It's running the same core stack as 1,508 other launches.
If you own this site, refresh the snapshot and see the full fix list any time →
Tech Stack (11) · Indie stack
| DNS |
Cloudflare DNS
|
| Hosting |
Vercel
|
| Security | HSTS |
| Business email |
Google Workspace
(3)
|
| Transactional email |
Resend
|
| Build tool |
Vite
|
| CSS framework |
Tailwind CSS
|
| Font |
Google Fonts
|
| JavaScript library | TanStack Router |
| UI library |
shadcn/ui
|
| SEO |
Google Search Console
|
Infrastructure
Email Security
Storage (1)
| Key | Size | Detected as |
|---|---|---|
| tsr-scroll-restoration-v1_3 | 49 B | TanStack Router |
Readiness Breakdown How?
Performance How?
⚠ 67 images: 64 oversized, 11 without width/height, 63 missing alt text
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 onboarding signals | +5 |
| AI palette signals | +5 |
| 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.