Method A:

1. Tap the "Log BBT" icon on the Homepage.

2. Choose "Manual" to input BBT manually.

3. Select the time you temped and tap on "__.__" to log your BBT, then save.

Method B:

1. Tap "Daily logs" on the Homepage.

2. Slide the calendar bar at the top to select the desired date, then log your BBT under the "BBT" section.