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Ten seconds of your voice. Four tracks to balance your sound.

Selftone maps the twelve musical notes in your voice, finds the ones that stand out and the one that stays quiet, and answers each with its complementary partner note. The result is four tracks designed to balance your personal sound pattern, every day.

Start free See how balance works

No card. No download. Works in your browser.

How Selftone balances your sound

What it hears in your voice decides what it gives back. About fifteen seconds of your time, then press play.

  1. Speak for 10 seconds

    Read a short, positive sentence out loud, or say whatever you like.

  2. See your 12-note map

    Selftone measures each of the twelve notes in your voice and picks out your three strongest notes and your quietest one.

    Strongest: G, E, A Quietest: F♯

  3. Meet the partner notes

    Each of those four notes is paired with its complement: the note six semitones away, directly across the wheel.

    Partner: G → C♯, E → A♯, A → D♯, F♯ → C

  4. Listen to 4 balancing tracks

    One track for each partner note, about three minutes each, designed to balance today’s sound pattern.

A daily ritual to find your balance

Your voice changes from day to day, so your tracks do too. Everything here helps you come back to it.

  • Relax with your colour

    One big button turns the screen into a slow, moving wash of the colour of the track that is playing, and can open by itself each time you press play.

  • Five sound styles

    Warm drone, gentle piano, nature, singing bowls or soft strings under your balancing tones. Try another sound for today’s tracks without changing your usual one.

  • Reports, trends and Ask Selftone

    Glance, summary or full detail, trends over weeks and months, and an AI guide that answers questions from your own data.

  • Sleep mode and morning grounding

    A soft, looping tone with a sleep timer at night, and a five-minute grounding sequence to start the day.

  • Daily streaks and reminders

    A gentle calendar of the days you showed up, streak freezes, and reminders that respect your quiet hours.

  • Friends

    Follow a friend, send a cheer, invite someone with a personal note, and choose exactly what they can see.

Every note has a partner

Music divides each octave into twelve equal steps. Six steps away, on the opposite side of the wheel, sits each note’s complementary partner. Selftone pairs the notes that stand out in your voice with these partners to rebalance your sound.

12 CC♯DD♯EFF♯GG♯AA♯B

The twelve notes and their reflection themes

  • C Grounded
  • C♯ Spark
  • D Warmth
  • D♯ Glow
  • E Clarity
  • F Growth
  • F♯ Balance
  • G Flow
  • G♯ Depth
  • A Tuning
  • A♯ Lift
  • B Completion

A look inside

Calm, clear and built for one-handed use on your phone.

  • Today screen with a streak counter, today’s progress toward three listening sessions and a button to record. Today screen with a streak counter, today’s progress toward three listening sessions and a button to record.
    Today
  • Recording screen showing today’s positive sentence and a large record button. Recording screen showing today’s positive sentence and a large record button.
    Record
  • Results screen with the twelve-note colour map and four personal tracks ready to play. Results screen with the twelve-note colour map and four personal tracks ready to play.
    Your tracks
  • Trends screen with a streak calendar and lines for each note over time. Trends screen with a streak calendar and lines for each note over time.
    Trends

Built on well-studied ideas

Music for unwinding, a kind sentence said out loud, small daily habits: the pieces of Selftone draw on research you can read for yourself.

Read the research

Find your balance in fifteen seconds a day.

Every feature is free while we test.

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For professionals: Symphony, our plan for working with clients