Here’s the truth: your iPhone is smarter than you think. It’s already freezing apps you’re not using. Unless you see lag or a battery crisis, just let apps be. Your phone will thank you with better performance.
Think of it this way: you don’t turn off the lights in every room of your house every time you leave. Your phone is the same—it’s energy-efficient by design. So relax, put your feet up, and let iOS do the heavy lifting.