Vitals 

Activity Monitor lists a thousand processes, a hundred of them called Google Chrome Helper. Vitals adds every helper to the app that launched it, so you see 60 apps instead of 1,000 processes, each with one figure for memory, CPU, energy, disk, and network.

Click any app for everything about it in one place. Vitals keeps 30 days of history, alerts you when an app uses too much, and finds the dev servers you forgot to stop, grouped by project, with their ports.

It lives in your menu bar, where every readout can be its own item. There is a volume slider for every app, a list of your Bluetooth devices with their batteries, and temperatures and fans.

Nothing leaves your Mac. Pay once, $5 during the launch and $29 after. No subscription, no account.

Give it a try → https://vitalsmac.com