StackScope launches on Product Hunt today, at 08:01 UK time. Take a look

← Back to browse

Arithnote

A private, offline-first computational notepad with live inline calculations and end-to-end encrypted sync.

Productivity

Added August 30, 2026 · Last analysed August 30, 2026 · via

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 30 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.

Arithnote scores highly overall, with a complete set of security headers, a thorough launch checklist, and clean crawl signals. Visible gaps: incomplete legal pages and incomplete email security.

Launched on Product Hunt on August 30, 2026. The site is served through Cloudflare, with a domain registered 5 months before launch. The crawl picked up 8 technologies on this site, covering analytics, CDN, developer tools, and DNS providers. The stack includes Cloudflare, Cloudflare DNS, and Counter.dev.

For context, it's more locked down than the typical Product Hunt launch.

If you own this site, refresh the snapshot and see the full fix list any time →

9.0
StackScope Score
Excellent
100/100 Launch Readiness
Launch ready
2/3 Legal
Partial
2/2 Crawl files
Complete
Vibe Score 0 · No AI signals
How much the site looks AI-generated. Informational pattern-match signal, not a verdict. Does not feed the StackScope Score. See which fingerprints fired →

Tech Stack (8)

Infrastructure
CDN Cloudflare
DNS Cloudflare DNS
Security HSTS
Email
Transactional email Resend
Build & Framework
Developer tools Vite
JavaScript library React Router
Analytics & Marketing
Analytics Counter.dev
SEO Google Search Console

Infrastructure

Network
AS13335 · US
DNS
Cloudflare DNS
Authoritative nameserver
DNSSEC
Not enabled
DNS responses unsigned. Cache-poisoning vulnerable.
Green hosting
Green hosted
Host runs on renewable energy. Data from The Green Web Foundation.
SSL Certificate
Google Trust Services
Valid 9 Jul 2026 to 7 Oct 2026
Certificate as captured in this snapshot, not a live check.
Domain Age
5 months
Registered Mar 2026 · Namecheap Inc.

Email Security

SPF Not published. Your domain can be spoofed in phishing emails.
DKIM Detected via known email provider
DMARC p=none None (p=none). Monitoring only.
?
MTA-STS Not deployed. Mail to your domain can be downgraded to plaintext en route.
?
TLS-RPT Not configured. You won't hear about silent SMTP TLS handshake failures.

Storage (4)

Local storage (2)
KeySizeDetected as
arithnote:currency-rates 3.3 KB -
arithnote:last-active-document-id 23 B -
Session storage (1)
KeySizeDetected as
arithnote.stagingAccessStatus 39 B -
IndexedDB (1)
DatabaseVersionDetected as
arithnote 100 -

Readiness Breakdown How?

Custom title and meta description
Open Graph tags (title, image, description)
Twitter card meta tags
Canonical URL declared
Responsive viewport meta tag
Favicon present
Semantic HTML (nav, main, article)

Performance How?

176 ms Server response
69% Faster than peers
1148 ms Largest contentful paint
0.00 Cumulative layout shift
1.1 MB Page weight
6 KB Image weight
1 Third-party domains
0 Console errors
0 Failed requests

22 images: 22 without width/height, 22 missing alt text

Indicative grade from a single automated render, not a substitute for Lighthouse or field data, and not part of the StackScope score.

AI Stance

Blocks AI crawlers
llms.txt published
9 AI bots blocked in robots.txt
ai-train = no
search = yes
? ai-input (not declared)
? None advertised

Well-Known Files

robots.txt
sitemap.xml (4 URLs)
security.txt
llms.txt
ads.txt
humans.txt
Privacy Policy
/privacy
? Terms of Service not detected
? Analytics present, but it set no tracking cookies on our visit (it may be opt-in-gated).
76% unique

Security Headers (6/6)

Permissions-Policy experimental (check browser support)
X-XSS-Protection deprecated (use Content-Security-Policy)

Build

1 JS files
1 CSS files
1 Third-party domains

Brand Colours

App Manifest

Arithnote
display: standalone 3 icons
theme #101114
Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.