According to Apple's application licensed end user agreement:
Your license for each App Store product that you obtain through the App Store Services is subject to your prior acceptance of this End-User License Agreement ("End User License Agreement") and you agree that the terms of this Agreement end-use license apply to each application. App Store product licensed through the App Store service
The standard EULA license applies to any product you get through the App Store unless:
Unless this App Store product is covered by a valid end-user license agreement between you and the App Store Product Provider, the terms of this separate end-user license agreement will prevail.
This will be the case unless you have a separate user license agreement between you and the application provider.
In the article, it does not mention anything about choosing your own license.