This repository is a curated, community-driven directory of open-source iOS, iPadOS, watchOS, tvOS, and visionOS applications. It is not a software application itself but a data curation and documentation project. The single source of truth is `contents.json`, a structured JSON file containing metadata for over 1,600 projects (title, category, source URL, screenshots, tags, stars, etc.). Ruby scripts in `.github/` transform this JSON into multiple markdown documents: `README.md` (the main categorized list), `APPSTORE.md` (apps with App Store links), `ARCHIVE.md` (deprecated projects), and `LATEST.md` (newest and recently updated entries). The pipeline also enriches data via the GitHub API (stars, license) and validates schema and categories in CI (CircleCI and GitHub Actions). While the repo is not a data research pipeline in the ML sense, it exhibits data engineering patterns: a structured data source, automated ETL (extract from JSON, transform to markdown, load to GitHub), validation, and deployment. The primary value is as a reference for developers seeking open-source iOS code to learn from or reuse.