I just re-installed Cronometer and was immediately reminded of why I deleted it before (even though I want to like it). In Australia and perhaps other metric countries our foods usually are not labelled with calories anywhere, just kJ. Which requires getting a calculator for every energy input.
So the very first task I went to do as a user - to add a new food - I abandoned because there was too much friction.
Am sad that there is there still no user option for metric/kilojoules. It’s a simple conversion preference, easy to implement, and users have been requesting it for years. Not having a setting for kilojoules is strange in much the same way as not having a setting for centimetres. And it’s keeping me using MyFitnessPal even though I want to ditch it for Cronometer because it has better vitamin tracking.