Meet Kinsa: a smart thermometer for your iOS device. The Kinsa Smart Thermometer is designed to give you an easier way to track temperature and symptom history. It connects to your smartphone via its headphone jack and provides you with an accurate reading fast. The device is ready for oral, rectal, and underarm use. It is compatible with Android devices by Samsung as well.
Kinsa provides you with simple on-screen instructions to help you get started faster. It can be used to track illness history and provides you with engaging graphics to entertain children.[Source]