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YOMI

A daily hiragana word game for Japanese learners. Spell one new word a day on the fifty-sounds keyboard, build a streak, and share your spoiler-free result.

Added August 12, 2026 · Last analysed August 12, 2026 · via

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 12 August 2026; the live site may have changed since.

YOMI is largely in shape, with a thorough launch checklist and clean crawl signals. Main gaps: no Content-Security-Policy, incomplete legal pages, and no email security records.

Launched on Product Hunt on August 12, 2026. The site is hosted on Vercel. The crawl picked up 5 technologies on this site, covering analytics, frameworks, hosting, and meta-frameworks. The stack includes Next.js, React, and HSTS.

For context, it's on one of the most common stacks we track, shared by 2,885 launches and 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 →

Vibe Score 18 · Few 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 (5)

Infrastructure
Hosting Vercel
Security HSTS
Build & Framework
Framework React
Meta-framework Next.js (4)
Analytics & Marketing
Analytics Vercel Analytics medium

Infrastructure

Network
AS16509 · US
DNSSEC
Not enabled
DNS responses unsigned. Cache-poisoning vulnerable.
Green hosting
Not green hosted
No green-energy record. Data from The Green Web Foundation.
SSL Certificate
Google Trust Services
Valid 28 Jun 2026 to 26 Sep 2026
Certificate as captured in this snapshot, not a live check.

Email Security

SPF Not published. Your domain can be spoofed in phishing emails.
?
DKIM Not detected at common selectors. Your provider may use a custom one.
DMARC Not published. Receivers fall back to permissive defaults.
?
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 (0)

This site uses no client-side storage we could detect on page load.

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?

630 ms Server response
24% Faster than peers
624 ms Largest contentful paint
0.00 Cumulative layout shift
172 KB Page weight
1 Third-party domains
0 Console errors
0 Failed requests

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?

SignalPoints
AI CSS signals +10
AI writing signals +5
AI palette signals +3

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.

AI Stance

No AI stance declared
llms.txt published
No AI bots blocked in robots.txt
? No directive declared
? None advertised

Well-Known Files

robots.txt
sitemap.xml (1 URLs)
security.txt
llms.txt
ads.txt
humans.txt
? Privacy Policy not detected
? Terms of Service not detected
? Analytics present, but it set no tracking cookies on our visit (it may be opt-in-gated).
Detection works best on English language sites.

Security Headers (5/6)

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

Build

Code splitting
9 JS files
1 CSS files
1 Third-party domains

Brand Colours

App Manifest

YOMI — one Japanese word a day
display: standalone 4 icons
theme #f1f3f7
education games
Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.