CalcHub
30+ free calculators with dark mode, voice input, PDF/CSV export, compare mode, and 37-currency auto-detect. No signup, works offline.
Added April 21, 2026
· Last analysed April 21, 2026 · via 
· 80% 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 21 April 2026; the live site may have changed since.
CalcHub is largely in shape, with complete legal pages, a thorough launch checklist, and clean crawl signals. What needs work: missing several security headers and no email security records.
Launched on Product Hunt on April 21, 2026. The site is hosted on Vercel. The crawl picked up 12 technologies on this site, covering advertising, analytics, consent tooling, and CSS frameworks. The stack includes Google Funding Choices, Next.js, and React.
For context, it's running the same core stack as 10,661 other launches.
If you own this site, refresh the snapshot and see the full fix list any time →
Tech Stack (12)
| DNS |
Cloudflare DNS
|
| Hosting |
Vercel
(2)
|
| Security | HSTS (2) |
| CSS framework |
Tailwind CSS
|
| Framework |
React
|
| Meta-framework |
Next.js
(3)
|
| Advertising |
Google Ads
|
Google AdSense
|
|
| Analytics |
Google Analytics
(3)
|
| Consent |
Google Funding Choices
(2)
|
| SEO |
Google Search Console
|
| Tag management |
Google Tag Manager
|
Infrastructure
Email Security
Readiness Breakdown How?
Vibe Score Breakdown How?
| Signal | Points |
|---|---|
| AI palette signals | +5 |
| AI writing signals | +5 |
| AI iconography signals | +5 |
| AI stack signals | +10 |
| Default scaffold favicon | +10 |
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.