Is it possible to track an iphone from another iphone?

My teenager has an iPhone and I have one too - wondering if there’s a built-in way to see their location without having to buy some separate device or use a computer. I’ve heard there are some native options but not sure if they require the other person to accept something or if it can run quietly in the background. Anyone done this with their kid’s phone?

Apple’s Find My app can share locations with mutual consent. The other person has to agree, and it doesn’t run silently without permission.