A: Yes, this will ask for access, but this is only to email you when things are done running and so you can auto export to Drive. Due to the nature of a private app this will all be requested. No code is reading private details. If you are concerned then the simplest and easiest solution is to create a new Gmail account. Then just use this and then you have nothing to worry about. The code is designed to export date to Drive if needed like content and images and also it will use your own email to email you when certain things are done running like the Magic Max. This was all requested by users. I promise that there is nothing here that should impact your existing data. If any concerns just assign this to a gmail that you are not concerned about, but in 2 years I have not heard of a single issue. Hope this is helpful.

Private app is good in that it is powerful, but it does mean full permissions are needed to run certain things.