Slow, steady sound can give the nervous system something predictable to follow.
Frequency listening + tone player
v1 prototype
Hear the mood inside sound.
Listen to nearby audio, find the dominant frequency, and explore the mood, brainwave state, and traditional wellness associations connected to each tone.
About sound and Hz
Why Sound Can Feel Healing
Mood Theo is built around a grounded idea: sound can shape mood, attention, breathing, body tension, and the way we settle into ourselves.
Chanting, drumming, bowls, bells, and ritual music have been used across cultures for reflection, prayer, and community regulation.
Low frequencies can be felt through the body, which may influence muscle tension, body awareness, and relaxation.
Sound can support regulation.
People use Hz sounds because music, rhythm, binaural beats, and sound-based relaxation can influence stress, attention, breathing, heart rate, and perceived tension. The strongest evidence is for sound as a complementary relaxation tool, not as a cure.
Hertz are cycles per second.
A 432 Hz tone vibrates 432 times per second. In sound-wellness spaces, people often explore 432 Hz music, 528 Hz music, binaural beats, singing bowls, gongs, drums, chanting, and low-frequency vibration.
Sound healing is old. Exact Hz claims are modern.
Many cultures used sound and rhythm for ritual, grief, healing, and trance. But ancient people were not measuring modern frequencies like 528 Hz or 432 Hz. That measurement language is modern.
Calm, focus, rhythm, and breath.
- Nervous-system calming
- Attention shift away from rumination
- Rhythm and movement synchronization
- Body vibration and tension awareness
Music and rhythm have real research.
Studies and reviews support music therapy, binaural beats, singing-bowl sound, vibroacoustic therapy, and rhythmic auditory stimulation in some stress, anxiety, pain, and movement contexts. Results vary by person and setting.
Specific frequency claims need care.
Claims like “528 Hz repairs DNA” or “396 Hz removes fear” are popular, but not well proven. Mood Theo treats them as cultural and wellness associations, not medical facts.
History + research
Where This Comes From
A little context for the curious listener.
Sound as a healing practice
The American Music Therapy Association describes the idea of music affecting health and behavior as old, with modern clinical music therapy developing into an organized profession in the 20th century.
What studies explore
Research has examined music therapy, binaural beats, 432 Hz music, singing bowls, vibroacoustic therapy, 40 Hz vibration, and rhythmic auditory stimulation. The bottom line: sound can be helpful, but exact-frequency claims should stay humble.
Music therapy and anxiety review / Binaural beats meta-analysis / 432 Hz dental anxiety study
Listen
Analyze Frequency
Detected dominant frequency
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Waiting for sound
Allow microphone access to begin real-time analysis.
Tone
Play a Tone
HZ
Frequency Component
These meanings are presented as traditional and wellness-culture associations, not medical claims.
Footer policy tab
Privacy
Privacy Policy for Mood Theo
Effective date: April 29, 2026. Mood Theo is a wellness-oriented sound exploration tool. It is not a medical device, does not diagnose or treat health conditions, and asks users not to submit private medical details.
What we collect: If you choose to save a mood session, we may collect your email address, selected or detected frequency, frequency feedback, mood now, mood wanted, broad country or region that you type, session timestamp, and basic technical details such as browser language and screen size. To count visitors, the backend may create a hashed visitor identifier from IP address and browser information; the builder dashboard shows visit counts, not raw IP addresses. Microphone audio is processed in your browser for frequency detection and is not recorded or uploaded by this prototype.
Why we collect it: We use saved session data to let users save their Mood Theo sessions, understand which frequencies people prefer, compare mood and frequency patterns, understand broad world preferences by country or region, improve the product, and send requested updates if you provide an email address.
Consent: Session data is saved only when you check the consent box and press Save Session, or when you press a feedback button after consenting. You can use the tone player and reference guide without saving a session.
Location: Mood Theo does not request precise GPS location in this prototype. The location field is optional and should be broad, such as a country, region, or city you are comfortable sharing for aggregate comparison.
Sharing: We do not sell personal information. We may use service providers for hosting, analytics storage, email delivery, security, or product operations. Public insights should be shown in aggregate form rather than exposing individual emails or individual mood sessions.
Retention and deletion: We keep saved session data only as long as needed for the purposes above. Users may request deletion or correction of their email-linked records by contacting the Mood Theo operator. Before public launch, add the correct support email here.
Security: We use reasonable technical and organizational safeguards appropriate for an early-stage wellness app. No system is perfectly secure, so the app should avoid collecting sensitive medical, financial, or identity information.
Children: Mood Theo is not intended for children under 13. Do not knowingly submit information from a child. If you believe a child has submitted information, contact the operator so it can be deleted.
International users: If you use Mood Theo from outside the United States, your information may be processed in the United States or other countries where our service providers operate. You may have privacy rights depending on where you live.
Policy updates: We may update this policy as Mood Theo grows. Material changes should be reflected in this tab with a new effective date.