Alternative units of measurement besides kg?

Currently, you can only enter kg and sets per exercise. That makes sense, of course, and works fine if someone is training with weights.

But I find myself wondering whether this isn't too limited. What if someone doesn't (yet) work with weights at all? For example, someone who does push-ups on a bar at a certain height, or performs an exercise with an elastic band. In those cases, "number of kg" doesn't really make sense.

So I wonder if it's possible (and useful) to be a little more flexible here. For example, you could deviate from the standard kg for each exercise when recording the load.

It's more of a thought that occurs to me: maybe not necessary for everyone, but I think it would be nice to have that option.