SupaCalc - 100+ Free Online Calculators
Free online calculators for finance, health, AI, math and more. Mortgage, calorie, BMI, compound interest, AI token cost and 100+ calculators.
Added April 29, 2026
· Last analysed April 29, 2026 · via 
· 75% 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 29 April 2026; the live site may have changed since.
SupaCalc - 100+ Free Online Calculators scores highly overall, with complete legal pages, a thorough launch checklist, and clean crawl signals. Visible gaps: missing several security headers and incomplete email security.
Launched on Product Hunt on April 29, 2026. The site is hosted on Vercel and served through Cloudflare, with a domain registered 1 week before launch. The crawl picked up 10 technologies on this site, covering CDN, CSS frameworks, DNS providers, 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 10,662 launches.
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Tech Stack (10)
| CDN |
Cloudflare
(3)
|
| DNS |
Cloudflare DNS
|
| Hosting |
Vercel
(2)
|
| Protocol | HTTP/3 (2) |
| Security | HSTS (2) |
| Email forwarding |
Cloudflare Email Routing
(2)
|
| CSS framework |
Tailwind CSS
|
| Framework |
React
|
| Meta-framework |
Next.js
(3)
|
| SEO |
Google Search Console
|
Infrastructure
Email Security
Storage (1)
| Name | Lifetime | Detected as |
|---|---|---|
| __supacalc_currency | 1y | - |
Readiness Breakdown How?
Vibe Score Breakdown How?
| Signal | Points |
|---|---|
| AI CSS signals | +10 |
| AI copy signals | +5 |
| AI palette signals | +5 |
| AI writing signals | +3 |
| AI iconography signals | +5 |
| AI stack 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.