Hear the person
you want to become.

Your words come first.

Before introducing your work, sharing a creation, or starting your day: describe how you want to show up. Review and rewrite the full script before generating audio. Choose from two Japanese AI voices, then replay or download your recording.

The app, worksheet, and generated scripts are designed for Japanese speakers. This page introduces the service in English; the app interface is in Japanese.

Listen before signing up.

This public sample is about sharing your work in your own words. It is AI-generated speech, approximately 40 seconds long.

Read the Japanese transcript →

Try it for free.

The no-signup worksheet helps you put your scene into words without sending the written text to our server. It uses a fixed writing template, not AI generation. Edit, copy, save, or print your words.

Email login unlocks your first personal audio for free, with up to three AI script drafts. No card required and no automatic upgrade. A ChatGPT account is not required.

Continue when it fits your life.

The optional plan costs ¥1,980 per month, including Japanese consumption tax, and includes 12 new audio recordings per billing period. It adds scripts for mornings, upcoming challenges and evenings, routines, daily notes, and script updates. Turning an updated script into audio uses one recording credit.

Payment is taken on signup and renews monthly. Unused credits do not roll over. Stop the next renewal from the account billing portal. See the current plan and terms (Japanese) →

A tool for imagination and reflection.

For adults aged 18 and over. SONOSAKI does not provide therapy, medical care, or guaranteed outcomes. The voices are synthetic, not recordings or clones of your own voice. Your private scripts and recordings are not published.

Created and operated by CHIERO, Inc. in Japan. Contact the maker · Press materials