CodeLayers

CodeLayers is a code exploration tool for inspecting how a change affects a codebase. It shows each file a change touches, the downstream dependencies it affects, and the blast radius before code is pushed or committed. The product is available for iPhone, iPad, and Vision Pro, and it also offers a command-line installer for macOS and Linux.

Its core features center on visualizing code structure and change impact. The app can explore a GitHub pull request from a pasted link and display the changed files, affected dependencies, and full blast radius in the browser without cloning or checking out the repository. It also presents the codebase as a spatial map, with blast-radius coloring that runs from red for direct impact to purple at five or more hops. A VS Code extension is included, showing change impact with color-coded file decorations, CodeLens annotations, and a sidebar of affected files by hop distance. The page also says that AI agents can answer questions about the codebase by highlighting relevant files and tracing dependency chains, and that prompts and edits can be handled across devices.

CodeLayers states that it supports all major programming languages, listing Rust, TypeScript, Python, Java, Go, C++, C, Ruby, PHP, Swift, and Zig. It supports public GitHub repositories for free, with 10 free PRs every 30 days for the Explore feature. The Pro plan costs $7.99 per month or $79.99 per year and adds full access, sync, AI, CLI watch mode, web sharing, GitHub Actions for PRs, API keys for CI/CD, private repositories, and zero-knowledge encryption. An Enterprise plan is also offered for organizations and teams with custom terms, team management, volume licensing, and priority support.