Tracking Bandwidth

With Internet plans that limit the amount of bandwidth usable per day / month it may be important to be able to track the amount of bandwidth

Some operating systems come with utilities to track bandwidth:

OSX Activity Monitor
https://support.apple.com/en-ca/HT201464

Windows 8/10 Task Manager

How to Monitor Your Network Usage in Windows 10

Android Data Usage

How to Monitor (and Reduce) Your Data Usage on Android

IOS (iPhone)
https://support.apple.com/en-ca/HT201299