3 It Logs Device Usage Across Your Ecosystem
If you use your iPhone a lot, you probably use an iPad quite frequently, too. Screen Time makes it easy to track device usage, no matter which device you’re using.
Screen Time will automatically track app and device usage on every iOS device that you’re logged into with your Apple ID. Currently, there’s no analog for Macs — but it’s not a stretch to say Screen Time might be added to that platform in the future.