Rivership

Terms of Use

Effective date: June 30, 2026 · Last updated: June 30, 2026

These Terms of Use (“Terms”) govern your use of the iOS applications published by Rivership (a sole proprietorship in Tokyo, Japan, operated by Ryo Kawafune — “we”, “us”). By downloading or using one of our Apps, you agree to these Terms.

For purchases made through the App Store, Apple’s standard Licensed Application End User License Agreement (EULA) also applies. Where these Terms and Apple’s standard EULA conflict, Apple’s EULA governs for App Store purchases.

License

We grant you a personal, non-transferable, non-exclusive license to use our Apps on Apple devices you own or control, in accordance with Apple’s App Store Terms and these Terms. You may not copy, modify, reverse-engineer, or redistribute an App except as permitted by law.

Purchases and subscriptions

Some Apps offer one-time purchases (e.g., unlocking all content or removing ads) and/or auto-renewable subscriptions.
Auto-renewable subscriptions renew automatically at the end of each period unless cancelled at least 24 hours before the period ends. Your Apple ID is charged for renewal within 24 hours before the period ends.
The title, length, and price of any subscription are shown on the purchase screen before you confirm.
You can manage or cancel purchases in your Apple ID account settings after purchase. Payments and refunds are handled by Apple under Apple’s terms.

Acceptable use

You agree to use our Apps only for lawful purposes and not to misuse, disrupt, or attempt to gain unauthorized access to any App or related service.

Content and AI features

Content you create stays on your device or your iCloud. Some Apps offer optional AI-assisted features (for example, writing feedback); these provide automated guidance only, may contain errors, and should not be relied upon as professional, academic, medical, or legal advice.

Disclaimer and limitation of liability

Our Apps are provided “as is” and “as available,” without warranties of any kind to the extent permitted by law. To the maximum extent permitted by applicable law, we are not liable for any indirect, incidental, or consequential damages arising from your use of an App.

Changes

We may update these Terms as our Apps evolve. Continued use after changes means you accept the updated Terms.

Governing law

These Terms are governed by the laws of Japan, without regard to conflict-of-laws rules.

Contact

Rivership — Ryo Kawafune, Tokyo, Japan
[email protected]