Mochi Talk Terms of Service

Last updated: 2026-09-20

These Terms govern your use of the mobile app "Mochi Talk" (the "App") provided by Kenya Yasumura ("we", "the operator"). By using the App, you agree to these Terms.

1. Nature of the App

The App lets you have voice conversations with AI using an API key you obtain yourself from an AI provider (a "bring your own key" model). Conversations occur directly between your device and the AI provider.

2. Account

An anonymous account is created automatically on first launch. You may delete it in the App; deleted data cannot be recovered.

3. Fees

3.1 Subscription (app fee)

  1. Continued use of the App requires a monthly subscription (the price shown in the app and the store listing/month). Without it, daily session count and call length are limited.
  2. Payment is processed by the Apple App Store or Google Play. Subscriptions renew automatically unless cancelled at least 24 hours before the renewal date. Cancel anytime in your store's subscription settings.
  3. If a free trial is offered, it converts to a paid subscription unless cancelled before the trial ends.
  4. Even after cancellation, you may continue using the App until the end of the period you already paid for. We do not provide prorated or partial-period refunds for mid-cycle cancellations. Refund requests are handled under Apple's or Google's own procedures and policies.

3.2 AI usage fees (important)

The subscription does not include AI provider fees. You pay the AI provider directly under your own agreement with them, via your own API key. We are not responsible for billing between you and any AI provider.

4. API keys and third-party services

  1. You are responsible for obtaining, safeguarding, and paying for your API keys.
  2. You must comply with your chosen AI provider's terms and policies.
  3. Your API key is stored only on your device (in the OS secure storage) and is never transmitted to or stored on our servers. As a result, we cannot view, use, or disclose your API key to any third party, and it is structurally impossible for your key to leak from our side (see our Privacy Policy for details).
  4. You are responsible for safeguarding and managing your key. We are not liable for loss, leakage, or unauthorized use of your API key arising from loss of your device or third-party access to it; revoke/reissue keys in your provider's console.

5. Prohibited conduct

You must not: (1) violate laws or public order, (2) use the App to generate and distribute illegal or harmful content, (3) infringe others' rights, (4) interfere with the App's operation or reverse-engineer it except as permitted by law, or (5) use the App in ways that violate your AI provider's terms.

6. AI-generated content (important)

  1. AI responses are automatically generated and not guaranteed to be accurate, complete, or useful. They may contain errors.
  2. AI responses are not medical, legal, tax, financial, or other professional advice. Mental-wellness conversations are not medical care, counseling, diagnosis, or treatment, and are no substitute for them. If you are struggling, please consult a professional. In an emergency, contact your local emergency or crisis services immediately (in the US, call or text 988; in Japan, 119 or 0570-064-556).
  3. You act on AI responses at your own responsibility.
  4. You can report inappropriate responses via the in-app report feature.

7. Intellectual property

The App and its bundled assets belong to the operator or their rightful owners. Templates (prompts) you create belong to you. AI outputs are governed by your AI provider's terms.

8. Disclaimer and limitation of liability

  1. The App is provided without warranty of any kind.
  2. We are not liable for damage caused by failures, changes, or termination of third-party services (AI providers, payment processors, etc.).
  3. Except in cases of willful misconduct or gross negligence, our total liability is limited to the subscription fees you paid for the App in the preceding 12 months. Mandatory consumer-protection laws remain unaffected.

9. Changes to the service

We may change, suspend, or terminate the App with prior notice (or subsequent notice in urgent cases).

10. Changes to these Terms

We may revise these Terms, announcing material changes in advance within the App. Continued use after revision constitutes acceptance.

11. Governing law and venue

These Terms are governed by the laws of Japan. The court having jurisdiction over the operator's place of residence shall have exclusive jurisdiction in the first instance over disputes relating to the App.

12. Contact

Operator: Kenya Yasumura — support@mochitalk.app