Sweetnrt Tuner

Free precision guitar tuner with Buzz Feiten Tuning System and Just 3rd (inspired by EVH). Works offline as a PWA.

virgo.fun · Added June 10, 2026 · Last analysed June 10, 2026 · via · 88% unique tagline

Own this Launch?

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 10 June 2026; the live site may have changed since.

Sweetnrt Tuner covers some of the launch checklist, with a thorough launch checklist and clean crawl signals. Main gaps: missing several security headers, incomplete legal pages, and incomplete email security.

Launched on Product Hunt on June 10, 2026. The site is hosted on Xserver Inc. in Japan, with a domain registered in 2021. Our crawler found 3 technologies on this site, covering DNS providers, hosting, and servers. The stack includes nginx, Xserver, and Xserver DNS.

Notably, it's one of only 16 launches we've crawled running Xserver.

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

4.7

StackScope Score

Fair

88/100 Launch Readiness

Launch ready

0/6 Security Headers

Poor

0/3 Legal

Missing

2/2 Web Standards

Complete

89/100 Performance

Fast

Vibe Score 8 · Few AI signals

Informational pattern-match signal. Does not feed the StackScope Score. See which fingerprints fired →

Tech Stack (3)

Infrastructure

DNS	Xserver DNS
Hosting	Xserver
Server	nginx

Infrastructure

Network

XSERVER - Xserver Inc., JP

AS131965 · JP

DNS

Xserver DNS

Authoritative nameserver

DNSSEC

Not enabled

DNS responses unsigned. Cache-poisoning vulnerable.

SSL Certificate

Let's Encrypt

Valid 12 Apr 2026 to 11 Jul 2026

Certificate as captured in this snapshot, not a live check.

Domain Age

5 years

Registered May 2021 · GMO Internet Group, Inc. d/b/a Onamae.com

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 (0)

This site uses no client-side storage we could detect on page load.

Readiness Breakdown How?

✓ Custom title and meta description

✓ Open Graph tags (title, image, description)

✓ Twitter card meta tags

✓ Canonical URL declared

✓ Responsive viewport meta tag

✓ Favicon present

⚠

Page title is 67 characters (advisory) Google only shows about 60 characters of the title in search results; aim for 50–60 to keep the whole thing visible.

⚠

Meta description is 187 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.

- Semantic HTML (nav, main, article)

Performance How?

1939 ms Server response

3% Faster than peers

1164 ms Largest contentful paint

0.00 Cumulative layout shift

45 KB Page weight

36 KB Image weight

2 Third-party domains

0 Console errors

0 Failed requests

⚠ 2 images: 1 oversized, 1 without width/height, 1 missing alt text

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?

Signal	Points
AI writing signals	+3
AI code-structure signals	+5

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

Content-Signal

? No directive declared

Link headers

? None advertised

Well-Known Files

✓ robots.txt

✓ sitemap.xml (6 URLs)

✗ security.txt

✓ llms.txt

✓ ads.txt

✗ humans.txt

Legal

? Privacy Policy not detected

? Terms of Service not detected

Detection works best on English language sites.

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

✗ HTML minified

✗ CSS minified

✗ JS minified

0 JS files

0 CSS files

2 Third-party domains

Brand Colours

App Manifest

Sweetener Tuner

display: standalone 2 icons

theme #0c0c0e

Something not look right? If a technology shown here is wrong or out of date, email [email protected] and we'll review it.