Improve your chances of growing your family with the Comper Smart Fertility Tracker. This temperature detection system can determine when is the best time for you to try to get pregnant. Using state-of-the-art technology, Comper is incredibly accurate. Simply place the device in your mouth and under your tongue for 1 to 3 minutes. There are three salient points with silicone rubber. The Comper delivers accurate readings of your temperature with two decimal places. From there, your results are linked to the app. You can use the app to keep track of your temperature and changes. The Comper algorithm also gives you nutrition and fitness advice to optimize your opportunities. Finally, the device comes in a charging case. In addition to upping the battery, it also offers UV cleaning and sterilization.