1. Swipe left or right on any part of the chart to see past temperature charts.

2. Tap on a temperature dot to see your temperature on that day.

3. Tap "BBT" on the top of the "Charts" page to view your BBT records, and you may swipe left on the temperature to edit or delete a certain day of the temperature.

4. If you want to compare your BBT chart with past cycle charts, click on the "Setting" option and select "Overlay", then click "BBT" to check. You may choose to overlay 2, 3, or 6 cycles for comparison.