GM Calculator
41 free online calculators for marketing ROAS, finance compound interest, health BMR & TDEE, and math percentages. Free forever — no sign-up required.
Added August 26, 2026
· Last analysed August 26, 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 26 August 2026; the live site may have changed since.
GM Calculator scores highly overall, with complete legal pages, a thorough launch checklist, and clean crawl signals. Main gaps: missing Permissions-Policy and Content-Security-Policy and incomplete email security.
Launched on Product Hunt on August 26, 2026. The site is hosted on Netlify, with a domain registered 2 weeks before launch. The crawl picked up 9 technologies on this site, covering CSS frameworks, DNS providers, business email, and email forwarding. The stack includes Next.js, React, and Tailwind CSS.
For context, it's on one of the most common stacks we track, shared by 476 launches and more locked down than the typical Product Hunt launch.
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Tech Stack (9)
| DNS |
Namecheap DNS
|
| Hosting |
Netlify
|
| Security | HSTS |
| Business email |
PrivateEmail
|
| Email forwarding |
Namecheap Email Forwarding
(2)
|
| CSS framework |
Tailwind CSS
|
| Framework |
React
|
| Meta-framework |
Next.js
(5)
|
| SEO |
Google Search Console
|
Infrastructure
Email Security
Storage (0)
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 palette signals | +5 |
| AI writing signals | +5 |
| AI iconography signals | +5 |
| AI asset signals | +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.