Mobile app UI design expert for iOS and Android. Use when designing app interfaces, creating design systems, ensuring accessibility, or following platform guidelines. Covers Material Design 3, Human Interface Guidelines, color theory, typography, and 2025 trends.
A 17 of 17 checks passed. Deterministic, no model, same answer every run.
pass: Frontmatter block present
pass: Frontmatter declares a name
pass: Frontmatter declares a description
pass: Size between 200 bytes and 200 KB (11796 bytes)
pass: No zero-width or bidi control characters
pass: No instruction hidden inside an HTML comment
pass: No link to an exfiltration or paste host
pass: No credential-shaped string
pass: No instruction to send local credentials anywhere
pass: No text hidden with inline styles
pass: No prompt-injection phrasing
pass: No curl or wget piped into a shell
pass: No recursive delete of root, home or parent
pass: No instruction to read or print local credentials
pass: No base64 blob over 200 characters
pass: No link to a raw IP address
pass: No script tag
Source
GitHub
majiayu000/spellbook · 272 stars · license MIT · pushed 2026-09-05 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_itoiyg5hgna7omla
GET https://markdownregistry.com/api/v1/resolve?ref=majiayu000/spellbook/app-ui-design
GET https://markdownregistry.com/api/v1/blob/152eeae1d51ada28b0f7b53c15a29dbbfa3dd67654c373c85e9e12c47217c00a