iDevices makes a wide range of home products, enhanced with app support. This includes iGrillmini, among others. CES saw the introduction of a brand new thermometer system, made for use indoors.
Kitchen Thermometer ($80) utilizes Bluetooth 4 to communicate food temperatures to your iPhone. Unlike iGrillmini, it has a digital display, and physical alarm control settings.
Two probes are included, and can be connected at the same time.