About Thea
“Our inner lives are worth paying attention to. Emotions run underneath almost everything we do and remain largely invisible until they aren’t. I wanted to create a simple, repeatable way to check in with ourselves, build emotional awareness, recognize our patterns, and have more agency in how we understand and respond to what we feel.”
— Rachelle Barrack, Founder & CEO
How Thea Works
Thea is a daily voice-led emotional check-in app for emotional clarity. Talk out loud about whatever is on your mind, and in a few seconds Thea reflects an emotional read from your voice. You can confirm or refine what feels accurate, then choose to Sit With It or Shift With It, with guided breath and personalized sound matched to the emotion and direction you choose.
Over time, Thea keeps track of what you’ve been feeling so you can see patterns across your days, weeks and months. The experience brings together voice technology, emotional awareness, breath and sound to offer clarity in the moment and greater understanding over time.
Rachelle Barrack, Founder & CEO

Rachelle Barrack, Founder & CEO
Collaborators
Thea brings together perspectives across neuroscience, music, sound, and technology to shape a voice-led practice for emotional awareness, grounded in human connection and thoughtful exploration.
AZA Allsop
Neuroscientist, Psychiatrist & Musician
AZA Allsop is a neuroscientist, psychiatrist and musician whose work explores the intersection of music, mindfulness, neuroscience and human connection. He received his MD from Harvard Medical School and PhD in Neuroscience from MIT. His perspective contributes to Thea’s exploration of how voice, sound and emotional awareness can support a deeper understanding of our inner lives.
Lynda Arnold
Sound Artist, Composer & Sound Meditation Facilitator
Lynda Arnold is a sound artist, composer, vocalist and multi-instrumentalist with three decades of experience in sound meditation. Her work with Thea informs the use of sound as part of a personalized emotional practice, helping shape how sound follows a voice-led check-in and supports the choice to sit with or shift an emotional state.
Abraham Pacas
Lead Audio Engineer
Abraham Pacas is Thea’s lead audio engineer, working across audio engineering, signal processing and emotional metadata. He helps build the sound architecture behind Thea, translating the emotional framework of the product into a structured library of sound that can be matched to different emotional states and pathways.






