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Guidonica

Guidonica is a high-performance, client-only web app for sight-reading and solfège practice, inspired by Guido d'Arezzo's historic pedagogy. It continuously streams procedurally generated sheet music across a fixed playhead in sample-accurate sync with a Web Audio metronome—zero framework bloat,…

Description excerpted from the original listing, which is linked below.

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Facts

Published: 14 Sep 2026 (14 Sep 2026)
Medium: web
Language: English (the page says so itself)
Subject: Images, video and audio (read from the page)
First seen: 25 Sep 2026, 13:25 UTC

Built with

Claude Code: confirmed
the agent's own trailer in the repository's commit history

What we can see

68 hygiene score

Certificate issued by YR2, 82 days remaining
Cookie attributes no cookies set
Credentials and payment does not ask for either
No strict transport security
Served over HTTPS
Mail authentication neither published
No insecure resources
Redirects none
Security headers 0 of 5 set
Third-party origins 3
Transport security TLS 1.3

Observed 25 Sep 2026 by fetching the page as a browser would. This describes hygiene and transparency, not safety: a missing header does not make a site dangerous, and a complete set does not make it trustworthy.

Made this?

Show it on your own site or README. It links back to this page.

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For a web page

<a href="https://bitsexplorer.com/i/564403/guidonica"><img src="https://bitsexplorer.com/badge/564403.svg" alt="Featured on BitsExplorer" height="22"></a>

For a README (Markdown)

[![Featured on BitsExplorer](https://bitsexplorer.com/badge/564403.svg)](https://bitsexplorer.com/i/564403/guidonica)

Changes we have seen

25 Sep 2026 first indexed

Guidonica

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