Idea: to make the units for weight and height interchangeable between metric and US. E.g: where you have a box to enter your weight or height add a second box that does the conversion.

I like to weigh myself in lbs as the gradations are smaller and the units more motivating and achievable when goal setting. Yet we need to track kg for important metrics such as watts/kg.

It's aggravating to have to leave this app and go elsewhere to do the conversion. 

Having to choose between metric or US in settings doesn't help. I need to use both! Am I alone in this??

So full disclosure: I'm Canadian and typically we operate with a foot in both camps. Many of us still weigh in lbs/oz even though officially we are supposed to use kg. For height measurements we might be a little more converted to metres, but it would still be good to have both measurements readily available. Please consider that second box to do the conversion throughout the app, so that we have a choice on whether to enter in metric or US, with the conversion populating in a second box next to it.