5. Some kind person writes a step-by-step tutorial on how to develop an app LIKE THIS... And the family writes their own app, and uploads it to their own iPad

5. Some kind person writes a step-by-step tutorial on how to develop an app LIKE THIS... And the family writes their own app, and uploads it to their own iPad / Android Tablet. If it's an academic article explaining HOW to do something, I don't think they're breaking any laws, just writing and publishing that article. If I make something for my own personal use, which violates a patent, I'm on legally shaky ground, but who is going to know?