A new system from ConnectedYard feeds data about the water conditions of your pool over the Internet to your smartphone 24/7, minimizing the chance of under- or over-treating it with chemicals. You can get real time, on the spot reports of the pH, chlorine, alkalinity, hardness, and cyanuric acid levels.
Floating Bluetooth and Wi-Fi enabled sensors monitor the chemical makeup of the swimming pool and/or hot tub water and send it to a mobile app. The same app can be used to order chemicals and seek advice and schedule cleaning and winterizing, etc. from a pHin network of retailers (a subscription to the service is required).