Calm Sea
Track your net worth, project your FIRE date and stress-test retirement with Monte Carlo simulation. Free plan, no bank login needed. Set up in minutes.
Added 8 Nov 2026
Analysed 8 Nov 2026
via 
What we found
- It sends none of the six security headers we check.
- It publishes DMARC but no SPF record, so receivers cannot tell which servers may send its email.
- Built with Next.js and React, the site is served through AWS CloudFront.
Built with: 19 technologies
Embed this on your site
For light pages
<a href="https://firstsited.com/launch/anikpwqw/calm-sea"><img src="https://firstsited.com/badge/anikpwqw/stack.svg" alt="Calm Sea tech stack on FirstSited" height="28"></a>
For dark pages
<a href="https://firstsited.com/launch/anikpwqw/calm-sea"><img src="https://firstsited.com/badge/anikpwqw/stack.svg?theme=dark" alt="Calm Sea tech stack on FirstSited" height="28"></a>
How it fits together
Each technology runs on, or extends, the one it sits under.
| Technology | Type |
|---|---|
| Infrastructure | |
AWS CloudFront
|
CDN |
AWS Route 53
|
DNS |
| HTTP/3 | Protocol |
PrivateEmail
(2)
|
Business email |
Brevo
|
Email marketing |
| Build & Framework | |
Tailwind CSS
|
CSS framework |
React
|
Framework |
Motion
|
JavaScript library |
Next.js
(5)
|
Meta-framework |
| Analytics & Marketing | |
Google Analytics
(4)
|
Analytics |
CookieYes
(5)
|
Consent |
Google Search Console
|
SEO |
Google Tag Manager
(2)
|
Tag management |
| Business Tools | |
Sentry
|
Error tracking |
Better Stack
(2)
|
Monitoring |
| Other | |
Earlyhunt
|
Directory |
Open Launch
|
Directory |
PeerPush
|
Directory |
Startup Fame
|
Directory |
Each technology links to its own page: which other new sites launched with it.
Site checks
| Custom title and meta description | |
| Open Graph tags (title, image, description) | |
| Twitter card meta tags | |
| Canonical URL declared | |
| Responsive viewport meta tag | |
| Favicon present | |
| Semantic HTML (nav, main, article) |
| Referrer-Policy | |
| X-Frame-Options | |
| Permissions-Policy experimental | |
| X-Content-Type-Options | |
| Content-Security-Policy | |
| Strict-Transport-Security | |
| X-XSS-Protection deprecated, not counted |
| Privacy policy /legal/privacy-policy | |
| Terms of service /resources/terms | |
| Consent manager CookieYes |
Mentions: Cookies, DPO
| robots.txt | |
| sitemap.xml 87 URLs | |
| security.txt optional | |
| llms.txt optional | |
| ads.txt only for ad-funded sites | |
| humans.txt optional |
| llms.txt published not published | |
| No AI bots blocked in robots.txt | |
| Content-Signal none declared | |
| Link headers none advertised |
| State | Record | Status |
|---|---|---|
| SPF | Not published | |
| DMARC p=none | Monitoring only (p=none) | |
| DKIM | Found | |
| MTA-STS | Not deployed | |
| TLS-RPT | Not configured |
Without SPF, receivers cannot tell which servers may send email for this domain.
Hosting and network
| Network | AMAZON-02 - Amazon.com, Inc., US AS16509, US |
|---|---|
| DNS | AWS Route 53 authoritative nameservers |
| DNSSEC | Not enabled DNS answers are unsigned |
| Certificate | Amazon valid 8 Sep 2026 to 24 Mar 2027, as captured |
| Green hosting | No record per The Green Web Foundation |
| Page build | 9 JS files, 1 CSS file 8 third-party domains, code splitting |
| Brand colours |
Storage: 5 items
| Name | Lifetime | Set by |
|---|---|---|
| cookieyes-consent | 12mo | CookieYes |
| _bs | 1y | - |
| _ga | 1y | Google Analytics |
| _ga_839L8BE4C9 | 1y | Google Analytics |
| Key | Size | Set by |
|---|---|---|
| _bs | 150 B | - |
Performance
| Measure | This site | Reading |
|---|---|---|
| Server response | 471 ms | good, faster than 30% of sites |
| Largest contentful paint | 5,540 ms | slow |
| Layout shift | 0.23 | some |
| Page weight | 3.1 MB | heavy |
| Image weight | 351 KB | light |
| Images | 12 | 2 larger than shown, 3 without width and height, 2 without alt text |
| Third-party domains | 8 | |
| Console errors | 0 | none |
| Failed requests | 0 | none |
From a single automated render of the home page. A quick guide, not a substitute for Lighthouse or field data. How we measure
Notes
-
Looks AI-built: few AI signals.
How much the site looks AI-generated. It is a pattern match shown for interest, not a verdict.
Which signals fired
Signal Points AI copy signals +5 AI onboarding signals +5 AI layout signals +5 - Performance comes from one render on 8 November 2026 and will vary between visits.
How we know
FirstSited records what new websites are built with, usually within a day of going live. Most we find ourselves, by watching public internet infrastructure for brand-new sites; the rest come from Product Hunt, Hacker News and PeerPush. We checked this one in full: its tech stack, DNS, security headers and page basics. This page is what we saw on 8 November 2026; the live site may have changed since.
Every technology below links to its own page: which other new sites launched with it. Watch any of them and get every new site that uses it as it goes live, from £15 a month.