Terms of Service

Effective date: June 29, 2026
Last updated: June 29, 2026

Draft notice: These Terms are a working draft prepared for the kurozu iOS mobile app release. They should be reviewed by qualified legal counsel before publication.

These Terms of Service ("Terms") govern your use of the kurozu mobile application for iOS (the "App") operated by kurozu ("we," "us," or "our").

By downloading, installing, or using the App — including by creating a cloud account or tapping a sign-in button that references these Terms — you agree to these Terms and our Privacy Policy. If you do not agree, do not use the App.

Contact: hello@example.com

1. The service

kurozu is a local-first personal timeline application. You can record events, observations, and context as facts arranged in time, optionally organized into timelines.

The App is designed to help you build portable personal context — including health-related context you choose to record — for your own use and, if you wish, to export to external AI tools.

The App is not a medical device, clinical decision support tool, or substitute for professional medical advice, diagnosis, or treatment.

2. Eligibility

You must be at least 13 years old (or the minimum age required in your jurisdiction) to use the App. If you are under the age of majority where you live, you may use the App only with permission of a parent or guardian who accepts these Terms on your behalf.

You must provide accurate account information and keep your sign-in credentials secure.

3. Local-only and cloud modes

3.1 Local-only (no account)

You may use core timeline features without signing in. In this mode:

• Timelines and facts are stored on your device only.
• We do not receive your timeline content.
• AI Add and cloud sync are not available.
• Data may be lost if you delete the App or lose your device unless you back up your device through other means.

3.2 Cloud account (opt-in)

If you sign in, you may create cloud-synced timelines stored on our servers, tied to your authentication identity (via Supabase).

• Cloud timelines require an internet connection to create or edit.
• When offline while signed in, cloud timelines may be shown read-only from a local cache.
• Sign-out removes cloud data from your device cache but does not delete server data.
• Move to cloud copies a local timeline to the cloud; the local original remains on your device.

Local-only and cloud timelines are separate. Signing in does not automatically upload your existing local timelines.

4. Accounts and authentication

You may authenticate using:

• Email magic link (passwordless)
• Google Sign-In (when configured)
• Sign in with Apple (when enabled in your build)

You are responsible for activity under your account. Notify us promptly of unauthorized access.

We may suspend or terminate accounts that violate these Terms or pose security or legal risk.

5. Plans and AI features

5.1 Plans

Cloud accounts have a plan (for example, free or premium) determined on our servers. Plan capabilities may change over time.

5.2 AI Add

AI Add (when enabled in your App build and on your plan) sends your prompt and timeline context to our servers and a third-party AI provider to suggest candidate facts. You must review and accept proposals before they are saved.

AI output may be inaccurate or incomplete. You are responsible for facts you accept into your timeline. AI suggestions are not medical advice.

AI Add requires a cloud-synced timeline, an active internet connection, and (when enforced) a premium plan. We may rate-limit or modify AI features at any time.

5.3 No AI in local-only mode

We do not run cloud AI features against local-only timelines without your explicit action to use cloud features.

6. Apple Health preview

The App may include a preview feature that reads Apple Health data on your device after you grant permission.

• Processing is on-device; we do not automatically upload HealthKit data.
• The feature is experimental, may change or be removed, and is not a medical device.
• You control HealthKit permissions in iOS Settings.

7. Export

Export to AI generates plain text on your device and copies it to your clipboard. You choose where to paste it. We are not responsible for third-party AI services or how they handle exported content.

8. Acceptable use

You agree not to:

• Use the App for unlawful purposes or in violation of applicable law
• Upload content that infringes others' rights or contains malware
• Attempt to bypass authentication, plan limits, or security controls
• Reverse engineer, scrape, or overload the service except as permitted by law
• Use the App to provide medical care or emergency services to others
• Misrepresent AI-generated content as professional medical advice

We may remove content or suspend access for violations.

9. Your content

You retain ownership of content you create. You grant us a limited license to host, process, and display cloud-synced content solely to operate the service (including AI Add when you request it).

You represent that you have the rights to the content you submit and that it does not violate these Terms or others' rights.

10. Intellectual property

The App, its design, branding, and underlying software are owned by us or our licensors. These Terms do not grant you rights to our trademarks or code except the limited license to use the App as intended.

11. Third-party services

The App integrates with third-party services including Supabase, Google, Apple, AI providers, Sentry, and Firebase Analytics. Your use of those services may be subject to their terms and policies. We are not responsible for third-party services outside our reasonable control.

12. Disclaimers

THE APP AND ALL CONTENT ARE PROVIDED "AS IS" AND "AS AVAILABLE" WITHOUT WARRANTIES OF ANY KIND, WHETHER EXPRESS OR IMPLIED, INCLUDING MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT.

WE DO NOT WARRANT THAT THE APP WILL BE UNINTERRUPTED, ERROR-FREE, OR SECURE, OR THAT AI OUTPUT WILL BE ACCURATE OR COMPLETE.

HEALTH AND MEDICAL DISCLAIMER: THE APP IS FOR PERSONAL INFORMATION MANAGEMENT ONLY. IT DOES NOT PROVIDE MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A QUALIFIED HEALTH PROVIDER WITH QUESTIONS ABOUT A MEDICAL CONDITION. NEVER DISREGARD PROFESSIONAL MEDICAL ADVICE BECAUSE OF SOMETHING IN THE APP.

13. Limitation of liability

TO THE MAXIMUM EXTENT PERMITTED BY LAW, WE AND OUR AFFILIATES, OFFICERS, EMPLOYEES, AND SUPPLIERS WILL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, OR ANY LOSS OF DATA, PROFITS, OR GOODWILL, ARISING FROM YOUR USE OF THE APP.

OUR TOTAL LIABILITY FOR ANY CLAIM RELATING TO THE APP OR THESE TERMS WILL NOT EXCEED THE GREATER OF (A) US $100 OR (B) THE AMOUNT YOU PAID US FOR THE APP IN THE TWELVE (12) MONTHS BEFORE THE CLAIM.

SOME JURISDICTIONS DO NOT ALLOW CERTAIN LIMITATIONS; IN THOSE CASES, OUR LIABILITY IS LIMITED TO THE FULLEST EXTENT PERMITTED BY LAW.

14. Indemnification

You agree to indemnify and hold us harmless from claims, damages, and expenses (including reasonable legal fees) arising from your content, your use of the App, or your violation of these Terms, except to the extent caused by our gross negligence or willful misconduct.

15. Termination and account deletion

You may stop using the App at any time. You may delete your cloud account in Settings, which immediately deletes cloud timelines and authentication data on our servers as described in the Privacy Policy.

We may suspend or terminate access if you breach these Terms or if we discontinue the App.

Sections that by their nature should survive (including disclaimers, limitation of liability, and indemnification) survive termination.

Uninstalling the App does not delete cloud data unless you delete your account first.

16. Changes

We may modify the App or these Terms. We will post updated Terms at this URL and update the effective date. Material changes may be communicated in the App or by email where appropriate. Continued use after changes become effective constitutes acceptance.

17. Governing law and disputes

These Terms are governed by the laws applicable where we operate the service, without regard to conflict-of-law rules.

Any dispute will be resolved in the courts of that jurisdiction, unless applicable law requires otherwise.

Before filing a claim, you agree to contact us at hello@example.com to attempt informal resolution.

18. General

• Entire agreement: These Terms and the Privacy Policy are the entire agreement regarding the App.
• Severability: If a provision is unenforceable, the remainder stays in effect.
• No waiver: Failure to enforce a provision is not a waiver.
• Assignment: You may not assign these Terms without our consent. We may assign them in connection with a merger or sale.

19. Contact

kurozu
Email: hello@example.com

Apple App Store users may also use Apple's standard purchase and refund processes where applicable. These Terms supplement, and do not replace, Apple's applicable App Store terms.