Check the listing for details. Basal Thermometer for Ovulation, Intelligent Quiet Bluetooth Thermometer Purple. Color: purple, Condition: New. Listed at 25.70 USD. Femometer Overview: Femometer smart basal thermometer syncs basal body temperature (BBT) to the intelligent Femometer app on your smartphone to record, track, and chart your BBT. It intelligently analyzes your BBT and calculates pregnancy rates of every day, so it can help with pregnancy, contraception, early-stage pregnancy monitoring and managing your menstrual cycle. Compatible With: Apple devices: iPhone 5+(iOS 8.0+); Android devices: with 4.3+ system and Bluetooth 4.0. Automate Data Recording & BBT Charting - Your BBT measurement will be automatically transmitted to the App via Bluetooth. The app will generate the BBT chart for you using your measured data and analyse them to find your fertile window & ovulation. No manual work needed. Accurate & Fast Measurement - The measurement precision is up to 0.09°F(0.01°C) to catch even the smallest BBT fluctuation. Measurement can be finished in as short as 30 secs. So Easy to Use - There is no button and no switch. Simply pull the lid up or down to switch it on or off. Take the 1st minute of your morning each day before you get out of the bed to get accurate measurement. Discreet Design for Women - It is designed like a lipstick so that no one else will be easy to notice your little secret trying for a baby or planning for natural contraception. It has an alarm that is soft and has adjustable volume, so you don't have to worry about waking up the "sleeping beauty" right besides you.