Privacy Policy

Effective Date: February 2, 2026

Thank you for using Knoself :)

“Knoself” refers to the Knoself team (hereinafter referred to as “we”), who legally own and operate the Knoself mobile terminal software (hereinafter referred to as “Knoself”).

We know that personal privacy information is important to you, so we are committed to protecting the personal information and privacy of users (hereinafter collectively referred to as “users” or “you”) who use our products and services (hereinafter referred to as “Knoself Services”).

Our goal is to help you meet yourself in time as much as possible. We will collect as little information about you as possible and protect your privacy as much as possible while providing convenience.

This Privacy Policy will help you understand the following:

I. What information we collect and how we use it II. Possible sharing, transfer, and disclosure of personal information III. How we retain, store, and protect your personal information security IV. How to manage your personal information V. Third-party services VI. Permissions applied within the app VII. Notification and revision of the privacy policy VIII. How to contact us

I. What information we collect and how we use it

We collect your personal information mainly so that you can use Knoself Services more easily and satisfactorily.

1. Data You Proactively Provide (Local Storage)

The core data you generate when using Knoself (including but not limited to diaries, time records, tags, and goal settings) is stored entirely locally on your iOS device. Core Commitment: Your recorded data belongs to you. We cannot access it, nor will we upload it to our servers.

2. iCloud Sync Data (Optional)

If you enable the iCloud sync function, your data will be synchronized across your devices through Apple’s iCloud service.

Storage Location: Data is stored in your personal iCloud account.
Access Rights: We cannot access any data in your iCloud.
Data Sovereignty: For users in mainland China, iCloud data is operated by GCBD (Guizhou Cloud Big Data) and protected by Chinese laws and regulations.

3. Statistical and Analytical Data (Anonymous)

To improve the app experience and fix crash issues, we may collect anonymous, non-personally identifiable statistical data.

Content Collected: App version, device model, operating system version, crash logs, and feature usage frequency.
Purpose: Used only for product improvement and troubleshooting, never for advertising tracking or sale.
Your Rights: You can turn off the sending of anonymous statistical data at any time in the app settings.

4. Health Data (Apple HealthKit)

If you authorize Knoself to access your health data, we will read your sleep, exercise intensity, mindfulness minutes, and date of birth.

Purpose: This data helps us analyze the impact of energy levels on your daily life and records, allowing you to understand your physical and mental state more gently.
Storage: This sensitive data is stored securely only locally on your iOS device and in your personal iCloud account.
Access: We understand the importance of this information. Unless you proactively enable AI analysis features for deeper insights and provide explicit authorization, we cannot access, collect, or upload your health data to any third-party servers. You have full control and can adjust or revoke authorization at any time in the iOS “Health” app or system settings.

Without your consent, we will not share your personal information with any third party, except in the following cases:

Realization of Core Functions: Sharing some necessary information with partners and third parties (such as using third-party SDKs for crash analysis, see the “Third-Party Services” chapter for details).
Legal and Regulatory Requirements: In accordance with laws and regulations or mandatory government requirements.

Transfer

With business development, we may carry out mergers, acquisitions, or asset transfers. In such transactions, we will require the new company/organization holding your information to continue to be bound by this Privacy Policy.

Disclosure

We only disclose your personal information in the following cases:

Obtain your explicit consent.
Based on mandatory legal requirements.

III. How we retain, store, and protect your personal information security

Data Security Technical Measures

We adopt security protection measures that meet industry standards to prevent data from unauthorized access, modification, or damage.

Device-level Security: Relying on the strict sandbox mechanism and security protection of the iOS system itself.
Cloud Security: If iCloud is used, data transmission and storage are encrypted, and security is guaranteed by Apple.

Security Incident Handling

Although we almost never store your personal data, if a security incident occurs, we will inform you in a timely manner in accordance with laws and regulations and take remedial measures.

IV. How to manage your personal information

Access, Correction, and Deletion

You have full control over your data:

Local Data: You can view, modify, or delete your diaries and records in the app at any time. After deletion, local data will be cleared immediately.
Uninstalling the App: Uninstalling the app will clear all locally stored data.

Revoking Authorization

You can turn off the permission authorization for Knoself (such as notifications, photo library, calendar, etc.) at any time through system settings.

Account Cancellation

Since Knoself does not require account registration to use, there is no account cancellation process. You can just stop using and uninstall the app.

V. Third-party services

To provide more complete services, we have integrated the following third-party SDKs. These SDKs only collect necessary anonymous device information and do not include your diary content.

Umeng Statistical Analysis SDK
- Operator: Umeng (Beijing) Technology Co., Ltd.
- Purpose: Count app activity and analyze feature usage to optimize products.
- Information Collected: Device information (IMEI/MAC/IDFA/OpenUDID/GUID/SIM IMSI), network information, and coarse location information.
- Privacy Policy: https://www.umeng.com/page/policy
Bugly SDK
- Operator: Tencent Technology (Shenzhen) Co., Ltd.
- Purpose: Monitor app crashes in real-time to help developers find and fix bugs quickly.
- Information Collected: Crash logs, device identifiers, operating system version, and network type.
- Privacy Policy: https://privacy.qq.com/document/preview/fc748b3d96224fdb825ea79e132c1a56

Data Cross-Border Transfer Description

According to the requirements of the “Personal Information Protection Law of the People’s Republic of China” and the “Measures for Security Assessment of Data Exports,” we hereby declare:

1. iCloud Data Storage Location

Mainland China Users: Your iCloud data is operated by Guizhou Cloud Big Data Industry Development Co., Ltd., and the data is stored within China, protected by Chinese laws and regulations.
Users in Other Regions: The data storage location follows Apple’s iCloud service terms; please refer to Apple’s Privacy Policy for details.

2. Third-Party SDK Data Flow

Umeng Statistical Analysis SDK: Data is stored on servers within China, operated by Umeng (Beijing) Technology Co., Ltd.
Bugly SDK: Data is stored on servers within China, operated by Tencent Technology (Shenzhen) Co., Ltd.

3. Data Export Situation

Important Commitment: Your core recording data (diaries, time records, etc.) will not be exported.

Locally stored data remains entirely on your device.
Data synchronized through iCloud (Mainland China users) is stored on GCBD’s servers in China.
Anonymous statistical data collected by third-party SDKs is stored on servers in China.

If special circumstances require data export, we will strictly abide by relevant laws and regulations and obtain your explicit consent in advance.

VI. Permissions applied within the app

We need to apply for the following system permissions to achieve specific functions. We promise to apply only when you use relevant functions and will not abuse permissions.

Access System Photo Library / Write to Photo Library
- Purpose: When you add photo attachments to your diary or save generated long images locally.
- Necessity: If refused, you will not be able to upload photos or save shared images.
Use Camera
- Purpose: When you take photos directly and insert them into your diary.
- Necessity: If refused, you will not be able to use the camera function.
Access Calendar
- Purpose: Used to import your calendar schedule into Knoself to help you associate time records.
- Necessity: If refused, you will not be able to synchronize calendar events.
Notification Permission
- Purpose: Used to send reminders you set (such as daily reviews, recording reminders).
- Necessity: If refused, you will not be able to receive reminder notifications.
Read Phone Identifier (Tracking)
- Purpose: Used for statistical analysis of Umeng/Bugly to help us identify user counts and deduplicate crash devices.
- Necessity: This is an optional permission; you can turn it off in system settings.
Access Health Data (HealthKit)
- Purpose: Read sleep, exercise, mindfulness, and birth date data to provide correlation analysis between energy and life.
- Necessity: This is an optional permission. If you want to understand yourself more comprehensively, you can turn this on; if refused, you can still use other core functions of Knoself normally, but you will not be able to see energy-related analysis suggestions.

VII. Notification and revision of the privacy policy

We may modify the terms of this Privacy Policy from time to time. For major changes, we will provide prominent notifications (such as in-app pop-ups, red dot prompts, etc.). If you continue to use Knoself Services, it means you agree to be bound by the revised Privacy Policy.

VIII. Contact us

If you have any questions, opinions, or suggestions, please feel free to contact us.

Customer Service Email: support@knoself.com
Report Illegal and Inappropriate Information: report@knoself.com
Developer: Knoself Team