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Algebra

Guided algebra lessons, interactive equation practice, and tournament mode in one focused trainer.

Education

Added May 13, 2026 · Last analysed May 14, 2026 · via Hacker News · 73% unique tagline

Own this Launch?
Screenshot of Algebra

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 14 May 2026; the live site may have changed since.

Algebra is missing several launch fundamentals. Worth fixing first: missing several security headers, incomplete legal pages, and no robots.txt or sitemap.

Launched on Hacker News on May 13, 2026. The site is hosted on HETZNER-CLOUD2-AS in Germany, with a domain registered 6 weeks before launch. Our crawler found 7 technologies on this site, covering advertising, analytics, consent tooling, and developer tools. The stack includes Google Funding Choices, Google Ads, and Google AdSense.

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

3.7
StackScope Score
Poor
78/100 Launch Readiness
Well prepared
3/6 Security Headers
Decent
0/3 Legal
Missing
0/2 Crawl files
Missing
Vibe Score 20 · 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 (7)

Infrastructure
OS Ubuntu
Server nginx
Build & Framework
Developer tools Vite
Analytics & Marketing
Advertising Google Ads
Google AdSense
Analytics Matomo
Consent Google Funding Choices (2)

Infrastructure

Network
HETZNER-CLOUD2-AS, DE
AS213230 · DE
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
Let's Encrypt
Valid 12 May 2026 to 10 Aug 2026
Certificate as captured in this snapshot, not a live check.
Domain Age
3 months
Registered Mar 2026 · Dynadot Inc

Email Security

✓
SPF ~all (via apex tutlm.com) Soft-fail (~all). Common and accepted.
?
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 (4)

Cookies (3)
NameLifetimeDetected as
FCCDCF 1y Google Funding Choices
_pk_id.63.23d1 1y Matomo
_pk_ses.63.23d1 < 1h Matomo
Local storage (1)
KeySizeDetected as
algebra-locale 2 B -

Readiness Breakdown How?

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

Vibe Score Breakdown How?

SignalPoints
Placeholder branding +10
AI styling 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
Content-Signal
? No directive declared
Link headers
? None advertised

Well-Known Files

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

Legal

? Privacy Policy not detected
? Terms of Service not detected
✓ Consent manager: Google Funding Choices
Detection works best on English language sites.

Security Headers (3/6)

✓
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)

Performance

509ms response time
Faster than 34% of sites
4 third-party domains loaded

Build

✓ Code splitting
6 JS files
1 CSS files
4 Third-party domains

Brand Colours

App Manifest

TutLM algebra trainer
display: standalone 1 icon
theme #060e1e
Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.