HRV Flow
Daily condition score (0-100) from wake-up HRV, heart rate, and sleep. Free. Apple Watch only.
Estimated origin: Singapore
Added April 23, 2026
· Last analysed April 23, 2026 · via 
· 62% 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 23 April 2026; the live site may have changed since.
HRV Flow has the basics covered well, with complete legal pages and fast page loads. What needs work: missing several security headers, no sitemap, and incomplete email security.
Launched on Product Hunt on April 23, 2026. The site is served through Cloudflare, with a domain registered 9 weeks before launch. Our crawler found 4 technologies on this site, covering CDN, DNS providers, email forwarding, and protocol. The stack includes Cloudflare, Cloudflare DNS, and Cloudflare Email Routing.
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Tech Stack (4)
| CDN |
Cloudflare
(3)
|
| DNS |
Cloudflare DNS
|
| Protocol | HTTP/3 (2) |
| Email forwarding |
Cloudflare Email Routing
(2)
|
Infrastructure
Email Security
Storage (1)
| Key | Size | Detected as |
|---|---|---|
| hrvflow_lang | 2 B | - |
Readiness Breakdown How?
Vibe Score Breakdown How?
| Signal | Points |
|---|---|
| AI iconography signals | +5 |
| AI CSS signals | +15 |
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.