Does tado° provide a report in which I can see the historic heating or AC activity?

The tado° report in the mobile Apps shows temperature, humidity, outside temperature, and weather throughout the day. Just press the report symbol in the upper right corner of each zone to access the detailed daily report.

You can inspect the exact values for each point in time by long-pressing the report curve.

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For zones with Smart Thermostats or Smart Radiator Thermostats the heat request by the zone is also shown historically in the report.