We built ThirdTone because we believe the body already knows how to heal. It just needs the right signal. Evan brings decades of deep listening to sound. Lisa brings a lifetime of studying the body. Together, we've created something neither of us could have made alone: acoustic protocols that meet you exactly where you are and guide you toward balance, clarity, and rest.
Evan Premo Co-founder 
Lisa Premo Co-founder
Five elemental tones, each tuned to
a different layer of healing
Every sound originates from acoustic instruments played by professional musicians. Recorded in high fidelity, never synthesized. The full library lives inside the app.
Structured paths that move you: one composed for you, one waiting to be found
Real results, published in
Nature, Frontiers & PubMed
Binaural beat listening predicted 43% of the variance in post-session relaxation depth
McConnell et al., 2014 → 22+ Clinical studiesA meta-analysis of 22 studies found significant effects on focus, calm, and pain relief
Garcia-Argibay et al., 2019 → 2x Creative outputDivergent thinking improved measurably after frequency-based audio stimulation
Reedijk et al., 2013 → 14 Brain regions respondFrequency patterns activate universally across all studied areas of the cortex
Dougherty et al., 2024 →
Your complete sound pharmacy
in your pocket
