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OvuSense also has an app that allows the user to track how medication and supplements affect her cycle pattern and allows her to share her charts with her clinician and family and friends.

What the user has to do: Insert the sensor overnight. In the morning, remove the sensor, wash it and download its data to the OvuSense App.

Who can use it: OvuSense is designed for women who have been trying to conceive for more than six months, who think they may have trouble ovulating and who think they may have too few eggs, according to the company.

Research behind the claims: There are no peer-reviewed studies on OvuSense. The research OvuSense shared online are meeting presentations at conferences, which are not regulated by the peer-review process. The only published study on OvuSense is on the comfort of the device

4. Clue

\"PHOTO:
Clue
PHOTO: Clue the period and health tracker phone app is pictured here.
>

What it is: Ovulation app and period tracker.

What it costs: Free.

What it claims Clue claims it has the fastest data entry of any period tracker and keeps it simple, guaranteeing, \"no flowers, butterflies, euphemisms or pink - ever.\" The app has dozens of ways to track your fertility health, including your period, ovulation, emotions, sleep and exercise, among others.

The app \"has a simple, intuitive interface and the ability to customize aspects of your period that are unique to you. It also integrates nicely with Apple Health, allows you to protect your data with a PIN or Touch ID, and lets you add an additional person’s cycle or invite someone to track your own—a unique feature which can be useful for some couples,\" according to the editors of Apple's App Store, where Clue is ranked among the top five most popular fertility apps.

What the user has to do: Input data on the app. \"The more you use it, the smarter it gets,\" according to the app.

Who can use it: Clue says it is not a contraceptive.

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