• Q: How many days before full ferning do you typically see partial ferning?

    A: Typically, partial ferning can be observed 3-4 days before full ferning occurs.

  • Q: Is it better to lick the lens or use a finger to apply saliva?

    A: It is best to use your finger to apply saliva from under your tongue to the lens. This method helps avoid creating bubbles.

  • Q: How do you replace the battery in the device?

    A: Instructions for battery replacement are detailed in the manual included in your package. You can also view our instructional video here.

  • Q: Should I use water to clean the microscope?

    A: To clean the microscope, use the enclosed cloth. Avoid using water directly on the lens as it could seep inside and cause damage. A damp cloth may be used cautiously.

  • Q: How do you activate the light on the microscope?

    A: The light automatically activates when you remove the top and the red plastic ring. For further guidance, watch our instructional video here.

  • Q: Is it normal for the ferning pattern to appear off-center in the saliva sample?

    A: Yes, this can occur at the start of the ovulation cycle. Record these observations using the KNOWHEN® app to track changes accurately.

  • Q: How can I remove air bubbles from the saliva on the lens?

    A: Gently smooth the saliva with your finger to remove any air bubbles.

  • Q: How many days before ovulation does this product indicate fertility?

    A: The test can indicate increased fertility 3-4 days before ovulation.

  • Q: Does the microscope light turn off by itself?

    A: Yes, the light will automatically turn off when the cover is replaced.

  • Q: How do I use the KNOWHEN® ovulation calendar app on my iPhone?

    A: Select an image within the app to record your results, then press "Save" to store your daily result in the calendar section.

  • Q: What does the lifetime warranty cover?

    A: The lifetime warranty covers manufacturing defects. The warranty process is explained in the product instructions. Note: Batteries are not included in the warranty, but new batteries are provided in the kit. A copy of the purchase receipt is required for any exchanges.

  • Q: What should I do if the light doesn’t turn on even after removing the protective ring?

    A: If the light doesn't turn on, it may be necessary to replace the batteries. Please refer to the video tutorial and use the spare batteries included with your kit.