SimSim

SimSim is a macOS utility that lets developers inspect the file system of iOS, watchOS, and tvOS applications directly from the Terminal or Finder. It presents the sandboxed container of a built app, allowing users to navigate its Documents, Library, and other directories without needing to launch the simulator or device manually. The tool acts as a free, open‑source alternative to SimPholders and is compatible with Xcode 10, ensuring it works with the standard development workflow for Apple platforms.

Targeted at developers who need quick access to an app’s runtime files, SimSim simplifies tasks such as debugging data storage, verifying resource placement, or extracting logs. By integrating with the command line and the graphical Finder interface, it offers flexibility for both script‑based workflows and manual inspection. The project is marked as stable and is distributed under an open‑source license, with no planned fees for future use.