JoinCalc
25 free calculators for tax, salary, mortgage, debt and retirement — 2026 rates for the US & UK. Instant answers in your browser, no sign-up ever.
Added July 13, 2026
· Last analysed July 13, 2026 · via 
· 56% 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 13 July 2026; the live site may have changed since.
JoinCalc ships with the launch fundamentals in place, 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 July 13, 2026. The site is served through Cloudflare, with a domain registered 2 weeks before launch. Our crawler found 9 technologies on this site, covering advertising, CDN, consent tooling, and CSS frameworks. The stack includes Google Funding Choices, Tailwind CSS, and Cloudflare.
It's also running the same core stack as 5,731 other launches.
If you own this site, refresh the snapshot and see the full fix list any time →
Tech Stack (9)
| CDN |
Cloudflare
|
| DNS |
Cloudflare DNS
|
| CSS framework |
Tailwind CSS
|
| Developer tools |
Vite
|
| JavaScript library |
React Router
|
| Advertising |
Google Ads
|
Google AdSense
(2)
|
|
| Consent |
Google Funding Choices
|
| SEO |
Google Search Console
|
Infrastructure
Email Security
Storage (1)
| Name | Lifetime | Detected as |
|---|---|---|
| FCCDCF | 1y | - |
Readiness Breakdown How?
Performance How?
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 |
|---|---|
| Placeholder branding | +10 |
| AI writing signals | +5 |
| AI iconography 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.