These Terms of Use (“Terms”) govern your use of the KnowledgeBrain iOS app (the “App”) provided by pixelart.tech (“we”, “us”). By downloading or using the App, you agree to these Terms. If you do not agree, do not use the App.
Your purchase and use of the App through the Apple App Store are also subject to Apple’s Licensed Application End User License Agreement (Standard EULA), except where these Terms specify otherwise and are permitted by Apple.
1. The App
KnowledgeBrain is a local-first personal knowledge base. You may capture documents, notes, voice memos and other content, search them, and optionally ask questions against your own library.
2. License
The App is licensed, not sold. Subject to these Terms and Apple’s Standard EULA, we grant you a personal, non-exclusive, non-transferable license to use the App on Apple-branded devices that you own or control.
3. Purchases
The App is sold as a paid, one-time download. Payment is processed by Apple. We do not collect payment card details. Refunds are handled under Apple’s refund policies.
4. No account
The App does not require an account. We do not operate user accounts or a cloud backend that stores your knowledge for you.
5. Your content
You retain all rights to content you import into the App. Content is stored on your device. If you enable iCloud sync, content is stored in your private iCloud database; we cannot access it. You are responsible for the content you choose to import and for keeping backups you need.
6. Optional cloud AI (BYOK)
By default the App does not send your content to third-party AI providers. If you enter your own API key and enable a cloud model, prompts and relevant excerpts are sent directly from your device to the provider you configured. We do not operate that service. You are responsible for that provider’s terms, fees, quotas, and data handling.
On supported devices, Apple Intelligence or other on-device models may generate answers locally.
AI-generated text may be incomplete or incorrect. You should verify important information against your original sources.
7. Permissions
Microphone and Speech Recognition are used only for voice notes and are processed on-device.
8. Acceptable use
You may not reverse engineer the App except as allowed by law, interfere with its operation, or use it to violate the rights of others or applicable law.
9. Disclaimer
The App is provided “as is” and “as available”. To the maximum extent permitted by law, we disclaim warranties of merchantability, fitness for a particular purpose, and non-infringement. We do not warrant that the App will be uninterrupted or error-free.
10. Limitation of liability
To the maximum extent permitted by law, pixelart.tech is not liable for indirect, incidental, special, consequential, or punitive damages, or for loss of data, profits, or goodwill, arising from your use of the App or of third-party AI services you configure. Our total liability for any claim relating to the App will not exceed the amount you paid for the App.
11. Apple
You acknowledge that Apple is not responsible for the App or for these Terms (except as a third-party beneficiary of Apple’s Standard EULA). Support for the App is provided by pixelart.tech, not Apple.
12. Changes
We may update these Terms by posting a new version on this page with a revised effective date. Continued use of the App after an update constitutes acceptance of the revised Terms.
初期状態では、本アプリは第三者の AI プロバイダへコンテンツを送信しません。あなたが API キーを入力してクラウドモデルを有効にした場合、質問文および関連抜粋は端末から、設定したプロバイダへ直接送信されます。当該サービスは当社が運営するものではありません。そのプロバイダの規約、料金、クォータ、データ取り扱いは、あなたが責任を負います。
法律で認められる最大限の範囲で、pixelart.tech は、本アプリまたはあなたが設定した第三者 AI サービスの利用に起因する間接損害、付随的損害、特別損害、結果損害、懲罰的損害、ならびにデータ・利益・のれんの喪失について責任を負いません。本アプリに関する当社の賠償責任の総額は、あなたが本アプリに対して支払った金額を上限とします。
11. Apple
Apple は本アプリおよび本規約について責任を負わないこと（Apple の Standard EULA の第三者受益者である場合を除く）を確認します。本アプリのサポートは Apple ではなく pixelart.tech が提供します。