In IOS
We need .app file to install into iPhone Simulator
Then Open terminal and follow given below steps
1) Enter following command to get device list
xcrun simctl list
2) Then Copy simualtor UDID which we want to install app
3) Enter following command to install app
xcrun simctl install 700332EF-8DE1-4040-B5F9-CC56D9CB1554 ~/Desktop/Runner.app
where 700332EF-8DE1-4040-B5F9-CC56D9CB1554 is simulator UDID and ~/Desktop/Runner.app is path of .app file
In ANDROID,
We need .apk file to install into android emulator
Then Open terminal and follow given below steps
1) Enter following command to get device list
adb install ~/Desktop/46.apk
where ~/Desktop/46.apk is path of apk