A personal Android app by JAC's Ventures LLC.
Second Brain keeps ideas, tasks, reminders, lists and project notes in one place on the phone, with one Today screen that shows what is due, the shopping list and where each project was left off.
It is a private app for one household. It is not sold or offered in an app store.
Optional: the app can save a daily backup copy of its data to the user's own Google Drive, in a folder called "Second Brain Backups", so nothing is lost if the phone is lost.