Yes, the Ember Mug and Ember Mug² will be fully functional without a mobile device. In this case, it will maintain a default temperature of 135°F. Once hot liquids are added, the Ember will pulse white as it works to reach the set temperature. This light will turn solid white when the preferred temperature has been reached.
Using the Ember without the App will limit you from the following features:
- Customizing your LED color identifier
- Assigning presets to different drinks
- Changing the temperature between 120°F to 145°F (if the app is not in use, the default temperature is 135°F)
- Updating your Ember Mug
- View battery life
- Changing brightness of the LED light
- Tea Timer