For the last month or two, scrolling in the Sense app on iPhone is very jerky. It used to be smooth. Now as I scroll, instead of moving smoothly, the screen keeps freezing and stuttering and moving jerkily. This applies uniformly across the entire app — vertical scrolling through events in the “Now” view, horizontal scrolling in the “Meter” view, vertical scrolling in the “Devices” view, etc. It is as if the app’s main UI thread freezes and goes unresponsive for about 1/10 second roughly every 1/2 second.