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8.0.1 • Public • Published

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Supports Node 6 and greater, and Xcode 9.4 and greater -- since version 8.x.

The ios-sim tool is a command-line utility that launches an iOS application on the iOS Simulator. This allows for niceties such as automated testing without having to open Xcode.


  • Choose the device family to simulate, i.e. iPhone or iPad. Run using showdevicetypes option to see available device types, and pass it in as the devicetypeid parameter.

See the --help option for more info.


    Usage: ios-sim <command> <options> [--args ...]
      showsdks                        List the available iOS SDK versions
      showdevicetypes                 List the available device types
      launch <application path>       Launch the application at the specified path on the iOS Simulator
      start                           Launch iOS Simulator without an app
      install <application path>      Install the application at the specified path on the iOS Simulator without launching the app

      --version                       Print the version of ios-sim
      --help                          Show this help text
      --exit                          Exit after startup
      --log <log file path>           The path where log of the app running in the Simulator will be redirected to
      --devicetypeid <device type>    The id of the device type that should be simulated (Xcode6+). Use 'showdevicetypes' to list devices.
                                      e.g ", 8.0"
    Removed in version 4.x:
      --stdout <stdout file path>     The path where stdout of the simulator will be redirected to (defaults to stdout of ios-sim)
      --stderr <stderr file path>     The path where stderr of the simulator will be redirected to (defaults to stderr of ios-sim)
      --sdk <sdkversion>              The iOS SDK version to run the application on (defaults to the latest)
      --family <device family>        The device type that should be simulated (defaults to `iphone')
      --retina                        Start a retina device
      --tall                          In combination with --retina flag, start the tall version of the retina device (e.g. iPhone 5 (4-inch))
      --64bit                         In combination with --retina flag and the --tall flag, start the 64bit version of the tall retina device (e.g. iPhone 5S (4-inch 64bit))
    Unimplemented in this version:
      --verbose                       Set the output level to verbose
      --timeout <seconds>             The timeout time to wait for a response from the Simulator. Default value: 30 seconds
      --args <...>                    All following arguments will be passed on to the application
      --env <environment file path>   A plist file containing environment key-value pairs that should be set
      --setenv NAME=VALUE             Set an environment variable


Choose one of the following installation methods.

Node JS

Install using Node.js (6 or greater):

$ npm install ios-sim -g


Download a zip file:

$ curl -L -o
$ unzip


Download using git clone:

$ git clone git://


Be sure to enable Developer Mode on your machine:

$ DevToolsSecurity -enable

Ensure that multiple instances of launchd_sim are not running:

$ killall launchd_sim


This project is available under the MIT license. See LICENSE.


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