Sometimes it can be a pain to open Xcode and Android Studio just to open a simulator. You can open up the simulator’s using these commands.

• ios Open your terminal and run this command. This will open up your most recent simulator open -a Simulator.app

• Android Go to tools directory inside your android sdk like:

1. cd ~/.Android/Sdk/tools

2. ./emulator -avd <your-avd>

You can find your avd name by running:

./emulator -list-avds