The app records the ovulation period incorrectly

First, let’s take a look at why some women use apps to record their ovulation periods inaccurately. This is because many apps use physiological data that is calculated based on past records rather than on the latest medical research. As a result, these apps may underestimate a woman's menstrual cycle and calendar timing, leading to inaccurate recording of ovulation.

Second, some women may record inaccurately for physiological reasons. For example, some women may miss a recorded period because of emotional problems or a medical condition. In addition, some women may not record accurate dates due to personal habits or oversights.

Finally, some women may feel inconvenienced by using these apps. For example, some women may find these apps inconvenient to carry around or use in public places such as gyms or offices, which may lead to inaccurate recordings.