Wefwef has this and is a pretty decent app. Click on your profile (middle button at bottom) then click “accounts” and pick your instance or hit the edit to add a new instance.

They also cross post on every single instance and tech community so I have only seen 1 million “sync for Lenny” posts…… so far

In Canada speed is always kilometres. For distance we don’t really use miles for jogging but most know the conversion if they are avid runners the rest the same. For temperatures it’s Celsius but people in border towns may use Fahrenheit. For weight for people official documents will be kilograms but most people talk in pounds, no stones. For measuring it can be both metric or imperial ie cups. For liquids it always in metric so millilitres or litres but if you go to the pub you can order pints which people think of in ounces and depending on the pub could be 14-20oz.