← Back to browse

Jmapp

HP48G(X) Graphic Calculator games written in assembly language

Games

Added July 17, 2026 · Last analysed July 17, 2026 · via Hacker News · 50% unique tagline

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 17 July 2026; the live site may have changed since.

Jmapp still has work before launch. What needs work: missing several security headers, incomplete legal pages, and no sitemap.

Launched on Hacker News on July 16, 2026. The site is hosted on AS12876 - Scaleway SAS in France, with a domain registered in 2009. The crawl picked up 10 technologies on this site, covering advertising, mobile, consent tooling, and DNS providers. The stack includes Google Funding Choices, Apache, and Apple App Store.

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

Vibe Score 25 · Some 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 (10)

Infrastructure
DNS Joker.com
OS Ubuntu
Server Apache
Build & Framework
Mobile Apple App Store
Google Play
Video YouTube (2)
Analytics & Marketing
Advertising Google Ads
Google AdSense (3)
Consent Google Funding Choices
SEO Google Search Console

Infrastructure

Network
AS12876 · FR
DNS
Joker.com
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
Let's Encrypt
Valid 24 Jun 2026 to 22 Sep 2026
Certificate as captured in this snapshot, not a live check.
Domain Age
16.7 years
Registered Nov 2009 · CSL Computer Service Langenbach GmbH d/b/a joker.com

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 (6)

Cookies (5)
NameLifetimeDetected as
VISITOR_INFO1_LIVE 5mo YouTube
VISITOR_PRIVACY_METADATA 5mo YouTube
YSC session -
__Secure-ROLLOUT_TOKEN 5mo -
__Secure-YNID 5mo YouTube
Local storage (1)
KeySizeDetected as
google_auto_fc_cmp_setting 3 B Google Funding Choices

Readiness Breakdown How?

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

Performance How?

657 ms Server response
24% Faster than peers
392 ms Largest contentful paint
0.00 Cumulative layout shift
13.1 MB Page weight
1.8 MB Image weight
3 Third-party domains
0 Console errors
0 Failed requests

31 images: 29 oversized, 31 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?

SignalPoints
Placeholder branding +10
AI writing signals +5
AI code-structure signals +10

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
security.txt
llms.txt
ads.txt
humans.txt
? Privacy Policy not detected
? Terms of Service not detected
Consent manager: Google Funding Choices
Detection works best on English language sites.

Security Headers (0/6)

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

Build

Code splitting
4 JS files
1 CSS files
3 Third-party domains

Brand Colours

Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.