intropi

Tones

Sound that sits under a session, or stands on its own.

Fifty-nine beds of sound. Play one alone, or set it under any session in the library while the voice stays on top.

See the frequency bands Browse the library

59 tones and soundscapes · layer any of them under any session

The frequency tones

Six beat rates, one clock.

One second of each tone's beat rate, drawn to the same time scale.

Each row is a real tone in the app, named for what people reach for it.

Six frequency tones drawn to one time scale One second of each tone's beat rate as a wave. Delta at 2 Hz makes two slow cycles, theta six, alpha ten, SMR twelve and a half, beta fourteen. Gamma at 40 Hz is a train of pulses, because an isochronic tone switches on and off instead of blending two ears. One second, same clock for every row Sleep - Delta 2 Hz Deep Meditation - Theta 6 Hz Calm Focus - Alpha 10 Hz Calm Alert - SMR 12.5 Hz Active Focus - Beta 14 Hz Insight - Gamma 40 Hz The bottom row is isochronic: pulsed on and off, not a left-right blend

Layering

Alone, or under a session.

A tone plays on its own, or sits under any session as a bed. The voice stays on top.

While a bed is live, the session's ambient music ducks to make room, and comes back when the bed stops.

A tone under a journey is the classic pairing. A daily short takes a bed too, and so does anything in the library.

A tone bed layered under a session Three stacked audio lanes. The session voice runs on top. A low, steady tone bed starts partway through. The ambient music lane is full until the bed starts, then ducks to a lower level while the bed is live. session voice tone bed ambient music the bed starts, the music ducks

Seven families

What the fifty-nine are.

13 frequency tones: 5 binaural, 2 isochronic, 6 solfeggio. 46 ambient beds: 30 soundscapes, 6 noise, 5 singing bowls, 5 nature.

Brainwave binaural5 tones, Sleep - Delta 2 Hz to Active Focus - Beta 14 Hz. Stereo headphones needed.
Brainwave isochronic2 tones, Insight - Gamma 40 Hz and Schumann Resonance - 7.83 Hz. No headphones needed.
Solfeggio6 single-frequency drones, Solfeggio 528 Hz among them.
Noise6 beds, Pink Noise - Sleep Bed and Brown Noise - Focus Bed among them.
Singing bowls5 beds, from Root Bowl - C (256 Hz) up the scale.
Nature5 beds, Rain - Steady Patter and Ocean - Rolling Surf among them.
Soundscapes30 beds. Rain on a Tent, Grandfather Clock, Desert Night, Heartbeat, and on.

Every tone plays free, alone or under any session.

Honest framing

What the evidence actually says.

Brainwave entrainment is a theory. The evidence for it is limited and mixed.

We name the bands so you can explore them, not because the case is settled.

Treat a tone as a relaxation tool and a listening preference, not a treatment. Solfeggio numbers are folk tradition, not science.

Binaural beats need stereo headphones: without stereo separation the effect collapses. Isochronic and solfeggio tones do not need them.

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We ask for age and a quick safety check inside the app before any session.

The method

Four stages, every time.

A century-old clinical structure, built properly for one goal: yours.

01 · Induction

Settle in and let attention narrow to a single, comfortable focus.

What the state is

02 · Deepener

Ease further down, past the part of you that argues at 11pm.

Browse deepeners

03 · Suggestion

Your goal, in your words, spoken to the part that actually decides.

Browse Self topics

04 · Awakening

Come back gently, or drift straight into sleep. Both are by design.

Sleep sessions

Start tonight.

Ten quiet minutes. Free to start.

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