What is a habit tracker generator?
A habit tracker generator draws a grid with habits down the left and days across the top, so a month of behaviour fits on one page you can read from across the room. The 21 day option exists because a shorter grid gives wider columns and a target you can finish; the 30 and 31 day options line up with calendar months. Markers are boxes or circles, which changes how the page feels to fill rather than what it records.