We call these “wattage deltas.” Their functionality might not mesh up perfectly with your expectations and there’s certainly some work we could do to improve them, but this is how they function now:
Sense marks them for significant wattage changes and will identify a known device along with the delta if possible. However, Sense will only notate them if you’re actively in the mobile Power Meter. So, there’s no historical browsing unless you scroll back to a period where you were actively using the Power Meter. Does that make sense?
Here’s an example from my app. The first picture is a chunk of where I had the power meter open and the second is when I did not, until the tail end. Both show my fridge turning on, but only one notates the delta.
