Kanjidon
The app that revolutionizes how you learn Japanese kanji. Smart quizzes, PvP battles, and SRS system. From beginner to JLPT N1.
Estimated origin: Italy
Added June 28, 2026
· Last analysed June 28, 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 28 June 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.
Kanjidon ships with the launch fundamentals in place, with a thorough launch checklist, well-configured email security, and clean crawl signals. Worth fixing first: no Content-Security-Policy and placeholder text in the legal pages.
Launched on Product Hunt on June 28, 2026. The site is hosted on IONOS and served through Cloudflare, with a domain registered 11 months before launch. The crawl picked up 12 technologies on this site, covering hosting, mobile, CDN, and DNS providers. The stack includes Apple App Store, Brevo, and Cloudflare.
For context, it's on a stack we've seen on only 14 launches and tighter on security headers than most Product Hunt launches.
If you own this site, refresh the snapshot and see the full fix list any time →
Tech Stack (12)
| CDN |
Cloudflare
|
| DNS |
Cloudflare DNS
|
| Hosting |
IONOS
|
Render
|
|
| Protocol | HTTP/3 |
| Security | HSTS |
| Business email |
IONOS Email
(2)
|
| Email marketing |
Brevo
(2)
|
| Transactional email |
Resend
|
| Mobile |
Apple App Store
|
Google Play
|
| SEO |
Google Search Console
|
Infrastructure
Email Security
Storage (0)
Readiness Breakdown How?
Performance How?
⚠ 22 images: 16 oversized, 20 without width/height
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 code-structure signals | +5 |
| AI scaffolding signals | +8 |
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.