Terms of Use

Established: October 7, 2026

These terms set out the conditions for using the iPhone app Omakase Journal ("the app"), provided by mamama, inc. ("we"). By downloading and using the app, you ("you" or "user") agree to these terms.

1. What the app does

From clues such as your photos, calendar, location records and health data, Yoru the ghostwriter asks about your day and drafts a diary entry from your answers. A draft becomes a diary entry only when you confirm it. The app supports iPhones running iOS 27 or later.

2. Pricing and subscription

Apple's standard license agreement (the standard EULA) also applies. If it conflicts with these terms, these terms take precedence.

3. AI-generated text

4. Rights in your diary

You own your diary content, including your answers and the drafts and entries based on them. We process what you enter only as far as needed to provide the app's features. Your diary is stored on your iPhone and we do not see it. However, if you agree to the use of an external AI or connect ChatGPT, information is sent and received as described in the Privacy Policy.

A diary can be lost if your iPhone breaks or is lost, or if you delete the app. Please save important entries from time to time with "Export journal" in Settings.

5. Prohibited conduct

If any of this applies, we may restrict your use of features such as the relay server without prior notice.

6. "Let Yoru listen all day" (beta)

This feature is in beta and may change or end. It can hear other people's voices, so please stop it where recording or listening is unwelcome. Complying with laws and the rules of the place, and respecting the privacy of the people around you, is your responsibility.

7. Outside services

The app uses Apple services, external AI services, ChatGPT and others. Their availability and content are governed by each provider's terms. We are not responsible if a provider's change or outage makes part of the app unusable.

8. Changes, interruptions and ending of the app

We may change the app, pause it temporarily for maintenance, or end it. If we end it, we will tell you beforehand in the app or on this website.

9. Disclaimer and limit of liability

We provide the app as it is. We do not guarantee that it will run without interruption, be free of errors, or suit your purposes.

Except where we act with intent or gross negligence, our liability to you for damages is limited to the amount you paid for the app in the previous 12 months. This does not apply where the law does not allow liability to be limited. These terms do not restrict any rights that consumer protection laws, such as Japan's Consumer Contract Act, give you.

10. Changes to these terms

We may change these terms when necessary. We will announce important changes in the app or on this website. If you use the app after the announcement, you are treated as having agreed to the revised terms.

11. Governing law and jurisdiction

These terms are governed by the laws of Japan. The Naha District Court is the exclusive court of first instance for any dispute relating to the app.

12. Contact

mamama, inc. (マママ株式会社)
Email: rihito@mamama.company

How we handle personal information is in the Privacy Policy, and answers about using the app are in Support.