The optional Menstruation and Fertility Prediction feature will predict the start date and length of your next period as well as your next fertile window, based on the actual data you enter. The predictions are based on an average of past cycle data, including your average cycle length, the average length of menstruation, and the average length of the luteal phase (the app calculates the length of the luteal phase based on your basal temperatures and temperature shifts). The more data you enter into Kindara, the more accurate the predictions will be.
How to turn Menstruation/Fertility Prediction On or Off:
- Tap More in the lower right corner.
- Tap Settings.
- Tap Prediction, then select Yes or No.
- Tap the Menu icon in the upper left corner.
- Tap Settings.
- Under Preferences, tap the checkbox next to Period Predictions. Check the box to turn this feature on or uncheck the box to turn the feature off.
For new users, the predictions are based on the average cycle length entered upon creating an account. After a user has been charting for several cycles, the app calculates the menstruation and fertility predictions based on the actual data entered.
Users with the Goal setting set to Avoid Pregnancy will only have access to Menstruation Prediction. This is because Fertility Prediction is based on past cycle data, and not the data from the current day – meaning that it's not always 100% accurate at determining the fertile window, and shouldn’t be relied upon as a means of avoiding pregnancy. Users with the Goal setting set to Get Pregnant or Track My Period will have access to Fertility Prediction as well as Menstruation Prediction. However, because the predictions are based on an average of past cycle data, and because many women do not have regular cycles, it’s a good idea to confirm ovulation and the fertile window not only with the Prediction feature but also by monitoring your fertility signs each day.
Here's how the symbols will appear on iOS devices:
Here's how Menstruation/Fertility Prediction looks in the Calendar view on iOS.
Here is the Calendar with predictions in Android:
For both iOS and Android, pink is the predicted period. Orange represents the fertile window, with darker orange representing more fertile days.