One Office Privacy Policy

1. Introduction

Beijing Haichuan Youbang Technology Co., Ltd. ("we") takes user privacy seriously. This policy explains how the One Office app (the "app") handles your information and the rights you have.

Please read this policy carefully before using the app. On first launch we will ask you to confirm it again in a dialog, and you can review the latest version any time in the app settings.

2. Local processing: your documents never leave your device

One Office is a fully local document toolkit, available as native apps for Android, iOS and HarmonyOS. On every platform, opening, previewing and editing your documents (PDF, Word, Excel, PowerPoint, TXT and more), format conversion and PDF processing (merge, split, encrypt, watermark) all happen on your device.

We do not provide cloud storage or cloud processing: your documents are never uploaded to our servers. We do not store, back up or analyze any of your document content. When you uninstall the app, related local data is removed with it.

3. Information we do not collect

The app requires no account registration. We do not collect your name, phone number, email address, contacts, location, photos or any other personal information.

We do not collect, upload or share the content of the documents you work on with any third party.

4. Information collected by third-party SDKs (advertising)

The app is free and sustained by advertising. To serve ads we integrate the third-party ad SDKs listed below. These SDKs are initialized only after you have read and accepted this policy in the consent dialog; if you decline, no ad SDK will run.

Ad SDKs may collect information such as device model, OS version, device identifiers (e.g. OAID / Google Advertising ID), IP address, network information, and app usage and ad interaction data, for ad delivery, frequency capping and measurement.

• Google channel (Android / Google Play version): Google AdMob (with the Google UMP consent service) — see https://policies.google.com/privacy . The paid "remove ads forever" purchase is processed through Google Play Billing; transaction data is handled by Google.
• iOS version (App Store distribution): Google AdMob (Google Mobile Ads SDK for iOS) — see https://policies.google.com/privacy . Purchases are processed through App Store in-app purchase; transaction data is handled by Apple.
• China channel (Android and HarmonyOS app store versions): Pangle GroMore mediation platform (ByteDance / Ocean Engine) — see https://www.csjplatform.com/privacy .

5. Permissions

The app only requests the permissions strictly needed for its core features, and uses them after you grant them in the system dialog:

• File access (storage on Android, files and folders on iOS, file read / write on HarmonyOS): to open the documents you choose, and to save edited, converted or processed files to your device.
• Network access: only to load ads (after your consent). The document features themselves work entirely offline.
• Permission names and the way they are granted follow each platform system prompt; you can revoke them at any time in system settings.

6. Children

The app is intended for general audiences. If you are under 14, please read this policy with a parent or guardian and use the app only with their consent.

7. Data security

Because your documents always stay on your device and we collect no personal information, the app avoids data-leak risks by design. Third-party SDKs are configured restrictively and enabled only where necessary.

8. Your rights

You can grant or revoke permissions, reset your advertising identifier and refuse personalized ads in system settings at any time. If you no longer agree to this policy, stop using the app and uninstall it — local data is removed with it.

To exercise rights of access, deletion or anything else related to personal information, or if you have any questions about this policy, contact us via the details below. We will respond within 15 business days.

9. Updates to this policy

We may update this policy from time to time. Material changes will be announced in the app or through app store release notes. Please check this page regularly for the latest version.

10. Contact us

Company: Beijing Haichuan Youbang Technology Co., Ltd.

Email: service_hcyb@163.com

This policy applies to the One Office app. If you have any questions about its interpretation or enforcement, feel free to contact us.