Thank you both for your responses.
Claude31, the only concern I have in your answer is that as a non-Developer my applications would apparently have to be reinstalled after a week, if I want to continue using them. If I become a developer, I understand that the cost is $99 annually. As a developer, would I be able to write apps, install them on my MacBook Pro and iPad, and have the apps available for the duration of my paid developer membership?