Here is a smart gadget that measures and sends water pH and temperature measurements to your iOS or Android device wirelessly. The HALO Smart Water pH Meter connects to the Hanna Lab app at the push of a button. It comes with a spherical glass tip and built-in temperature sensor.
This pH sensor provides you with real-time data. It also saves readings to a history file. Data can be shared with others in CSV format. The Halo is ready for data graphing. You can find out more about it here.