Xpression, a new app developed by U.K.-based EI Technologies, senses your emotions and their triggers. Although the app won’t be ready for consumer use for about a year, it’s being initially introduced in health care settings to help track patient’s moods. Xpression works by listening to how patients speak, recognizing acoustic features within speech to figure out how and when an emotion change occurs. The app is set into motion through voice-recognition technology, and can be activated whenever a user talks; at the end of the day it can also generate a mood log. At the moment the app can only recognize basic emotions like “angry,” “sad,” and “happy,” but in the near future it is expected to create a much more nuanced profile of daily emotional trajectory.