Your grandmother’s advice about “saving battery” by closing apps? Yeah, it’s mostly wrong. Modern iPads are built like tiny, efficient supercomputers.
iOS handles background apps like a zen master. It freezes them, puts them on a shelf, and only wakes them up when absolutely necessary. Closing them manually often uses more energy to reload them from scratch.
So, unless an app is frozen or acting like a brat, leave it alone. Your iPad isn’t a cluttered desk—it’s a magical shelf where books stay open at the exact page you left them.