Game detection is off until you turn it on in Kemble Desktop’s Preferences › Games. The list of running programs is read and matched on your computer and never leaves it; only a recognised game’s name reaches Kemble, shown as Playing in Kemble Circle for at most 10 minutes after the game stops, never in Kemble Work and not while you are invisible. Turning off Share my activity in Privacy & safety stops it and deletes it at once. The privacy policy now says all of this.
The privacy policy covers Kemble Desktop’s game detection
What Kemble Desktop reads on your computer to show the game you are playing, what reaches Kemble, who sees it, for how long, and how Share my activity stops it.