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Sprelli.com

Polska platforma korepetycji online. Sprawdzeni nauczyciele, przejrzyste ceny, lekcje przez internet.

Education

Added July 1, 2026 · Last analysed July 1, 2026 · via · 78% 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 1 July 2026; the live site may have changed since.

Sprelli.com ships with the launch fundamentals in place, with a complete set of security headers, a thorough launch checklist, and clean crawl signals. Worth fixing first: incomplete legal pages, tracking cookies set before any opt-in, and incomplete email security.

Launched on Product Hunt on July 1, 2026. The site is hosted on Vercel, with a domain registered 4 months before launch. We've detected 16 technologies on this site, covering transactional email, advertising, analytics, and communication. The stack includes Next.js, React, and Tailwind CSS.

It's running the same core stack as 9,067 other 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 →

8.7
StackScope Score
Excellent
90/100 Launch Readiness
Launch ready
2/3 Legal
Partial
2/2 Crawl files
Complete
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 (16) · Indie stack

Infrastructure
DNS Vercel DNS
Hosting Vercel
Security HSTS
Email
Business email Google Workspace
Transactional email Amazon SES
Resend
Build & Framework
CSS framework Tailwind CSS
Framework React
Meta-framework Next.js (5)
UI library Lucide Icons
Analytics & Marketing
Advertising Google Ads (4)
Analytics Google Analytics (5)
Social Google Search
Tag management Google Tag Manager (5)
Commerce & Payments
Payments Stripe
Business Tools
Communication LiveKit

Infrastructure

Network
AS16509 · US
DNS
Vercel DNS
Authoritative nameserver
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 24 Jun 2026 to 22 Sep 2026
Certificate as captured in this snapshot, not a live check.
Domain Age
4 months
Registered Feb 2026 · GoDaddy.com, LLC

Email Security

SPF ~all Soft-fail (~all). Common and accepted.
DKIM Detected via known email provider
DMARC p=none None (p=none). Monitoring only.
?
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
_ga 1y Google Analytics
_ga_T24XPY04Q8 1y Google Analytics
_gcl_au 2mo Google Ads
Local storage (1)
KeySizeDetected as
_gcl_ls 277 B Google Ads

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)
Meta description is 174 characters (advisory) Google only shows about 155–160 characters of the description in desktop search results (less on mobile); anything past that won't appear.

Performance How?

308 ms Server response
55% Faster than peers
2904 ms Largest contentful paint
0.00 Cumulative layout shift
1.1 MB Page weight
82 KB Image weight
2 Third-party domains
0 Console errors
0 Failed requests

2 images: 2 oversized, 1 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
AI onboarding signals +5
AI palette signals +5
AI writing signals +5
AI stack 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

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

Well-Known Files

robots.txt
sitemap.xml (3944 URLs)
security.txt
llms.txt
ads.txt
humans.txt
Privacy Policy
/privacy-policy
? Terms of Service not detected
? Consent manager not detected
Analytics set tracking cookies on our visit, with no opt-in step.
94% unique

Security Headers (6/6)

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

Build

Code splitting
23 JS files
2 CSS files
2 Third-party domains

Brand Colours

App Manifest

Sprelli — Korepetycje online
display: standalone 2 icons
theme #00B894
education
Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.