Itsumo
Reading practice from N5 to N1 with built-in vocabulary, kanji readings, grammar breakdowns, and native audio. Try free for 14 days.
73% unique tagline
itsumo.study · Added April 9, 2026 · Last analysed April 10, 2026· via Hacker News
This analysis is a snapshot taken on 10 April 2026. The site may have changed since then and results may not reflect its current state.
Tech Stack (8)
| Technology | Category | Detected via |
|---|---|---|
| PostHog | analytics | cookie_name script_src |
| Spaceship DNS | dns_provider | ns_host |
| Spaceship Mail | email_corp | mx_host spf_include |
| Resend | email_transactional | dkim_selector |
| SendGrid | email_transactional | dkim_selector |
| Netlify | hosting | http_header_name http_header_value |
| Expo | meta_framework | script_src |
| HSTS | security | http_header_name |
Infrastructure
Hosting
AMAZON-02 - Amazon.com, Inc., US
AS16509 · US
SSL Certificate
Let's Encrypt
Expires 20 May 2026
Domain Age
6 months
Registered Sep 2025 · Spaceship, Inc.
Readiness Breakdown How?
✓
Favicon present
✓
Open Graph tags (title, image, description)
✓
Canonical URL declared
✓
Responsive viewport meta tag
✓
Custom title and meta description
✓
Semantic HTML (nav, main, article)
✓
Privacy policy page present
-
Source maps not exposed in production
-
Error tracking service installed
-
Twitter card meta tags
Vibe Score Breakdown How?
| Signal | Points |
|---|---|
| Writing style patterns | +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.
Is this your site? 3 tips to improve your score
-
Add a
/.well-known/security.txt so security researchers can reach you. Learn more
-
Consider adding a
llms.txt file to help AI models understand your site. Not yet a standard, but gaining adoption. Learn more
-
Improve your security headers. Scan your site at securityheaders.com to see what's missing.
Embed this score on your site
<a href="https://stackscope.dev/launch/p36fgj3c/itsumo"><img src="https://stackscope.dev/badge/p36fgj3c.svg" alt="StackScope Score" height="28" /></a>