Here is another electric kettle that you can control from your smartphone or tablet. The Stagg EKG+ has variable temperature control from 135°F to 212°F. It has a LCD screen that clearly shows your set and desired temperature. The kettle has a hold function to keep water at the proper temperature for up to 30 minutes.
Stagg EKG+ has up to 1 liter capacity. The app lets you set temperature goal, turn the kettle on/off, and sends real time temperature updates. You can find out more on Kickstarter.