So you would like to control your electric or natural gas water heater from your smartphone? The Aquanta Smart Water Heater Controller is worth a look. This WiFi connected gadget lets you control your water heater from your phone and shows you how much hot water your have available. It also shows your weekly and monthly consumption data.
The Aquanta Smart Water Heater Controller comes with leak detection and maintenance alerts. It has automatic overheating shutoff function. It supports IFTTT. You can use it with storage style electric and natural gas heater.