Terms of Use

1. Application

These Terms apply to the Todia iPhone application (the “App”) and its related website, authentication, and cloud features. You may use cloud features after reviewing and accepting these Terms and the Privacy Policy. Available on-device features remain usable if you do not accept them.

2. Service

The App provides calendar, to-do, notification, Chat, announcement-image, calendar-sharing, and shared-to-do features. Ordinary events, to-dos, and Chat history are generally stored on your device. Authentication, entitlement, usage, sharing, and other clearly identified features use cloud services. Lists and tasks you designate as shared to-dos are stored on our backend to synchronize edits among participating members.

3. Accounts and authentication

The App creates an anonymous Firebase account on first use. At your option, it may be linked to Google or another supported sign-in method. You are responsible for securing your devices and linked accounts and must not use another person’s credentials.

4. Third-party services

Firebase, Google Sign-In, Gmail, Groq, Gemini, and other third-party services are also governed by their providers’ terms and privacy policies. Parts of the App may become unavailable due to outages, changes, or restrictions imposed by those providers.

5. AI features

AI responses and generated content may be incorrect, incomplete, or unsuitable. Review them and use your own judgment. The App requires confirmation before finalizing important actions such as adding events or tasks, appending notes, or creating Gmail drafts.

6. Prohibited conduct

• Illegal or seriously improper use
• Infringement of third-party rights, privacy, or intellectual property
• Unauthorized access, authentication bypass, excessive load, interference, or abusive analysis
• Unauthorized acquisition or disclosure of share tokens, credentials, or API keys
• Violation of the App’s or a third-party service’s conditions

7. Your data

You or the applicable rights holder retain rights in content you enter. You permit us and our processors to handle information only as necessary to provide the App and to provide content entered in a shared to-do to participating members. Confirm what and with whom you share, and enter only information you are authorized to share. Information is handled under the Privacy Policy.

8. Deletion and termination

A shared-to-do owner may delete the list for all members, and an editor may leave it. You may submit an irreversible cloud-account deletion request in the App. After acceptance, authentication data, backend user data, calendar-share snapshots you published, and shared to-dos you own are deleted asynchronously, with temporary failures retried. On-device data, images saved to Photos, calendar copies already imported by recipients, shared-to-do copies temporarily retained on offline devices, and anonymized records that must be retained by law may not be removed automatically or immediately. Manage on-device data through the relevant features or by deleting the App.

9. Changes, suspension, and termination

We may change, suspend, or discontinue all or part of the App for maintenance, security, legal compliance, third-party changes, or other reasonable needs. Material changes will be communicated by reasonable means.

10. Disclaimers and limitation

We do not warrant uninterrupted availability, freedom from errors, or fitness for a particular purpose. This does not limit rights that cannot be limited under applicable consumer law. Except for intent or gross negligence, liability is limited to ordinary and direct damages.

11. Governing law and jurisdiction

These Terms are governed by Japanese law. Unless applicable law requires otherwise, disputes concerning the App will be submitted to the court having jurisdiction over our principal place of business as the agreed court of first instance.

12. Changes to these Terms

We may change these Terms after announcing the change and effective date on the website or in the App. We may require renewed consent before continued use of cloud features after a material change.