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ChallengeUp , The LinkedIn for Doers

Join social challenges, build streaks, and earn your Challenge Score.

Health
Germany Estimated origin: Germany

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

Own this Launch?
Screenshot of ChallengeUp , The LinkedIn for Doers

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 12 July 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.

ChallengeUp , The LinkedIn for Doers looks production-ready overall, with complete legal pages and fast page loads. Visible gaps: missing several security headers, no sitemap, and incomplete email security.

Launched on Product Hunt on July 12, 2026. The site is served through Cloudflare, with a domain registered 8 weeks before launch. We've detected 13 technologies on this site, covering transactional email, CDN, CSS frameworks, and developer tools. The stack includes Capacitor, Tailwind CSS, and Amazon SES.

It's one of 78 launches on this exact stack.

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

6.2
StackScope Score
Good
72/100 Launch Readiness
Well prepared
2/6 Security Headers
Weak
3/3 Legal
Complete
1/2 Crawl files
Partial
90/100 Performance
Fast
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 (13)

Infrastructure
CDN Cloudflare
DNS Cloudflare DNS
Protocol HTTP/3
Email
Transactional email Amazon SES
Resend
Build & Framework
CSS framework Tailwind CSS
Developer tools Vite
Font Google Fonts
Framework Capacitor
JavaScript library React Router
UI library shadcn/ui
Analytics & Marketing
SEO Google Search Console
Commerce & Payments
Payments Stripe (4)

Infrastructure

Network
CLOUDFLARENET - Cloudflare, Inc., US
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 14 May 2026 to 12 Aug 2026
Certificate as captured in this snapshot, not a live check.
Domain Age
3 months
Registered May 2026 · InterNetX GmbH

Email Security

✗
SPF Not published. Your domain can be spoofed in phishing emails.
✓
DKIM Detected via known email provider
✓
DMARC p=reject Reject (strict). Strong.
?
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 (3)

Cookies (3)
NameLifetimeDetected as
m 1y -
__stripe_mid 1y Stripe
__stripe_sid < 1h Stripe

Readiness Breakdown How?

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

Performance How?

144 ms Server response
81% Faster than peers
528 ms Largest contentful paint
0.00 Cumulative layout shift
1.2 MB Page weight
3 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.

AI Stance

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

Well-Known Files

✓ robots.txt
✗ sitemap.xml
✗ security.txt
✗ llms.txt
✗ ads.txt
✗ humans.txt

Legal

✓ Privacy Policy
/legal/privacy
✓ Terms of Service
/legal/terms
88% unique
Mentions:
GDPR Cookies DPO

Security Headers (2/6)

✓
Referrer-Policy
✗
X-Frame-Options
✗
Permissions-Policy experimental (check browser support)
✓
X-Content-Type-Options
✗
Content-Security-Policy
✗
Strict-Transport-Security
–
X-XSS-Protection deprecated (use Content-Security-Policy)

Build

2 JS files
2 CSS files
3 Third-party domains

Brand Colours

App Manifest

ChallengeUp
display: standalone 2 icons
theme #4A154B
Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.