New: The State of Indie Launches: June 2026. Who adopts a piece of infrastructure tells you how new it is. Read

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Online Guitar Tuner

Tune your guitar online with our free, accurate guitar tuner. Supports standard tuning, drop D, open tunings & more. Perfect for beginners and professionals. No downloads required - works on any device with microphone.

Added July 2, 2026 · Last analysed July 2, 2026 · via PeerPush · 75% unique tagline

Own this Launch?
Screenshot of Online Guitar Tuner

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 2 July 2026; the live site may have changed since.

Online Guitar Tuner scores highly overall, with complete legal pages, a thorough launch checklist, and clean crawl signals. Main gaps: missing several security headers and incomplete email security.

Launched on PeerPush on July 2, 2026. The site is served through Cloudflare, with a domain registered in 2025. We've detected 16 technologies on this site, covering advertising, analytics, CDN, and consent tooling. The stack includes Google Funding Choices, Next.js, and React.

It's on one of the most common stacks we track, shared by 3,249 launches.

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

8.1
StackScope Score
Excellent
100/100 Launch Readiness
Launch ready
2/6 Security Headers
Weak
3/3 Legal
Complete
2/2 Crawl files
Complete
92/100 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 (16)

Infrastructure
CDN Cloudflare
DNS Cloudflare DNS
Protocol HTTP/3
Email
Email forwarding Cloudflare Email Routing (2)
Build & Framework
CSS framework Tailwind CSS
Font Google Fonts
Framework React
JavaScript library aubio.js
Meta-framework Next.js (5)
Package CDN jsDelivr
Analytics & Marketing
Advertising Google Ads
Google AdSense (2)
Analytics Microsoft Clarity (2)
Plausible (2)
Consent Google Funding Choices
SEO Google Search Console

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 21 Jun 2026 to 19 Sep 2026
Certificate as captured in this snapshot, not a live check.
Domain Age
1 year
Registered Mar 2025 · Spaceship, 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 (1)

Cookies (1)
NameLifetimeDetected as
FCCDCF 1y Google Funding Choices

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
✓ Semantic HTML (nav, main, article)
⚠
Meta description is 218 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?

160 ms Server response
79% Faster than peers
400 ms Largest contentful paint
0.00 Cumulative layout shift
1.8 MB Page weight
6 KB Image weight
8 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

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 (1 URLs)
✗ security.txt
✗ llms.txt
✓ ads.txt
✗ humans.txt

Legal

✓ Privacy Policy
/privacy
✓ Terms of Service
/terms
✓ Consent manager: Google Funding Choices
96% unique
Mentions:
Cookies

Security Headers (2/6)

✓
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
38 JS files
2 CSS files
8 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.