CallzUp
Make secure 1080p HD video & voice calls with custom UserIDs. CallzUp requires no phone numbers, no SIM cards. Free, encrypted, and zero server logs.
Estimated origin: India
Added August 20, 2026
· Last analysed August 20, 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 20 August 2026; the live site may have changed since.
CallzUp is largely in shape, with complete legal pages, a thorough launch checklist, and clean crawl signals. Main gaps: missing several security headers, tracking cookies set before any opt-in, and incomplete email security.
Launched on Product Hunt on August 20, 2026. The site is hosted on Vercel, with a domain registered 6 weeks before launch. The crawl picked up 11 technologies on this site, covering analytics, CSS frameworks, developer tools, and DNS providers. The stack includes Tailwind CSS, GoDaddy DNS, and Google Analytics.
For context, it's on one of the most common stacks we track, shared by 3,045 launches.
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Tech Stack (11)
| DNS |
GoDaddy DNS
|
| Hosting |
Vercel
|
| Security | HSTS |
| CSS framework |
Tailwind CSS
|
| Developer tools |
Vite
|
| Font |
Google Fonts
|
| JavaScript library |
React Router
|
| UI library |
Lucide Icons
|
| Analytics |
Google Analytics
(4)
|
Vercel Analytics
medium
|
|
| Tag management |
Google Tag Manager
(2)
|
Infrastructure
Email Security
Storage (2)
| Name | Lifetime | Detected as |
|---|---|---|
| _ga | 1y | Google Analytics |
| _ga_MEX834KJ2G | 1y | Google Analytics |
Readiness Breakdown How?
Performance How?
⚠ 14 images: 14 oversized, 14 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 copy signals | +5 |
| AI onboarding signals | +5 |
| AI palette signals | +5 |
| Round-number metric claim | +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.