Uninstalling Apps on an iOS Device
Uninstall an app to remove all data files associated with the app.
Connect your device to your Mac.
In the devices window under Devices, select your device.
Under Installed Apps, select the app from the list you want to remove.
Click the Delete button (–), and in the dialog that appears, click Delete.
During development, you might uninstall an app in order to test code that runs only when your app is first launched.
In Xcode, you can uninstall only the apps that you created. You can’t use Xcode to uninstall any of the system-installed or third-party apps on the device.