A user-defined range of dates is displayed within a first region, and an interactive cursor is displayed at a first location within the first region, the first location corresponding to a first date within the range of dates. Based at least in part on the first date, a first estimated fertility is determined and displayed in a second region of the display area. A user input is detected at a second location distinct from the first location, the user input corresponding to a user selection of a second date in the range of dates distinct from the first date. In response, the interactive cursor is dynamically moved from the first location to the second location. Based at least in part on the second date, a second estimated fertility is determined, and the first estimated fertility in the second region is replaced with the second estimated fertility.
