I’ve still been using GoogleSheets SmartApp. Recently found you can export the GoogleSheet chart as an image that gets refreshed when data is updated, so it is usable in SmartTiles…
GoogleSheets has some nice features, but as an engineer who uses Excel regularly, it can be frustrating sometimes. Still trying to figure out how to only chart last X data points. Currently I have to manually adjust the chart’s data range every week because it will squeeze more and more data into the chart.