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FlatRateKit

Free HVAC pricing calculators and price book templates built around your own business costs.

Added August 17, 2026 · Last analysed August 17, 2026 · via

Own this Launch?
Screenshot of FlatRateKit

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 August 2026; the live site may have changed since.

FlatRateKit is largely in shape, with complete legal pages, a thorough launch checklist, and clean crawl signals. Main gaps: missing several security headers, tracking cookies set before any opt-in, and incomplete email security.

Launched on Product Hunt on August 17, 2026. The site is served through Cloudflare, with a domain registered 3 months before launch. The crawl picked up 11 technologies on this site, covering analytics, CDN, CSS frameworks, and DNS providers. The stack includes Next.js, React, and Tailwind CSS.

For context, it's on one of the most common stacks we track, shared by 5,071 launches.

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

6.9
StackScope Score
Good
90/100 Launch Readiness
Launch ready
0/6 Security Headers
Poor
3/3* Legal
Complete*
2/2 Crawl files
Complete
93/100 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 (11)

Infrastructure
CDN Cloudflare
DNS Cloudflare DNS
Email
Business email Zoho Mail (2)
Build & Framework
CSS framework Tailwind CSS
Framework React
Meta-framework Next.js (4)
Analytics & Marketing
Analytics Google Analytics (5)
PostHog (4)
SEO Google Search Console
Tag management Google Tag Manager (3)
Business Tools
SaaS Zoho

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 7 Jul 2026 to 5 Oct 2026
Certificate as captured in this snapshot, not a live check.
Domain Age
3 months
Registered May 2026 · NameCheap, Inc.

Email Security

✓
SPF ~all 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 (6)

Cookies (3)
NameLifetimeDetected as
ph_phc_kBzKduA2sPUKpR6SiKX8hzBYujkjuftULc6WKFc4hdEn_posthog 1y -
_ga 1y Google Analytics
_ga_TRDG09XTP1 1y Google Analytics
Local storage (1)
KeySizeDetected as
ph_phc_kBzKduA2sPUKpR6SiKX8hzBYujkjuftULc6WKFc4hdEn_posthog 831 B PostHog
Session storage (2)
KeySizeDetected as
ph_phc_kBzKduA2sPUKpR6SiKX8hzBYujkjuftULc6WKFc4hdEn_posthog 90 B PostHog
ph_phc_kBzKduA2sPUKpR6SiKX8hzBYujkjuftULc6WKFc4hdEn_primary_window_exists 4 B PostHog

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)

Performance How?

939 ms Server response
12% Faster than peers
1500 ms Largest contentful paint
0.00 Cumulative layout shift
562 KB 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 but publishes an llms.txt
✓ 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 (13 URLs)
✗ security.txt
✓ llms.txt
✗ ads.txt
✗ humans.txt

Legal

✓ Privacy Policy
/privacy
✓ Terms of Service
/terms
? Consent manager not detected
Analytics set tracking cookies on our visit, with no opt-in step.
92% unique
Mentions:
Cookies Do Not Sell Updated: May 10, 2026

Security Headers (0/6)

✗
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

✓ Code splitting
18 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.