Holdfast Invoice — holdback calculator for Canadian trades
Made in Canada. Phone-first progress invoices for Canadian construction trades (CAD). Statutory holdback by province. Tax on the gross before you subtract holdback.
Estimated origin: Canada
StackScope records what new websites are built with, the week they launch. Most we find ourselves, by watching public internet infrastructure for brand-new sites; the rest come from Product Hunt, Hacker News and PeerPush. We crawled this one for its tech stack and scored it for launch readiness: DNS, security headers, SEO basics. This page is what we saw on 27 August 2026; the live site may have changed since.
Every technology below links to its own page: which other new sites launched with it. Vendors and agencies watch those pages with Stackdar and hear about new adopters the week they ship, from £15 a month.
Holdfast Invoice — holdback calculator for Canadian trades ships with the basics, with a thorough launch checklist and clean crawl signals. What needs work: missing several security headers, incomplete legal pages, and incomplete email security.
The site is hosted on GitHub Pages and served through Fastly, with a domain registered the day of launch. We've detected 5 technologies on this site, covering CDN, DNS providers, email forwarding, and hosting. The stack includes Fastly, GitHub Pages, and Google Search Console.
It's running the same core stack as 2,669 other launches.
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Tech Stack (5)
| CDN |
Fastly
|
| DNS |
Namecheap DNS
|
| Hosting |
GitHub Pages
|
| Email forwarding |
Namecheap Email Forwarding
(2)
|
| SEO |
Google Search Console
new
|
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 |
|---|---|
| AI writing 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.