Privacy Policy

Last Updated: April 28, 2026

1. Information Collection and Use

1.1 Information We Do Not Collect

The App does not collect the following types of information:

• Personal identification information (such as name, email address, phone number, etc.)
• Location information
• Contact information
• Photos or media files
• Device identifiers or advertising identifiers
• Usage analytics data
• Any third-party tracking data

1.2 Locally Stored Data

The App only stores the following data locally on your device:

• Financial Account Information: Asset and liability account information you manually enter (such as account name, amount, type, etc.)
• History Records: Modification history and notes for account amounts
• App Settings: Theme preferences, language settings, in-app purchase status, etc.
• Backup Files: Financial data backups you actively export (JSON format)

These data are stored only in your device's local storage, will not be uploaded to any server, and will not be shared with third parties.

1.3 In-App Purchase Functionality

If you choose to purchase premium features within the app (unlocking account quantity limits):

• Purchase information is processed through Apple App Store, and we cannot access your payment information
• We only store the purchase status (purchased/not purchased) locally on the device to unlock features
• This purchase status is associated with your Apple ID and can be restored across devices using the same Apple ID

2. Data Security

Since all data is stored locally on your device, data security depends on:

• Physical security of your device (preventing loss or theft)
• System security of your device (password, biometric protection measures, etc.)
• Operating system sandbox mechanism (iOS/macOS app isolation)

We recommend that you:

• Regularly use the app's export function to backup important data
• Store backup files in secure locations (such as encrypted cloud storage or external hard drives)
• Enable lock screen password and biometric features on your device

3. Data Sharing and Disclosure

We do not share, sell, or rent any of your data to any third parties.

The only possible data transmission scenarios:

• Apple App Store: When processing in-app purchase transactions, Apple handles payment information (we have no access to it)
• Legal Requirements: In rare cases, if legally required, we may need to disclose information (but since we don't collect any data, there is actually nothing to disclose)

4. Data Retention and Deletion

4.1 Data Retention

Your data will remain on your device until you:

• Manually delete the app
• Clear app data
• Reset your device

4.2 Data Deletion

To delete your data, you can:

• Delete individual accounts within the app
• Uninstall the app (will delete all local data)
• Use iOS system settings to clear app data

Note: Once deleted, data cannot be recovered unless you have backup files.

5. Third-Party Services

Third-party services used by the App and their privacy impact:

• Apple App Store: Used for app distribution and processing in-app purchases. Apple has its own Privacy Policy.
• Flutter Framework: Open-source cross-platform development framework that does not collect data.
• Hive Database: Lightweight local database where data is stored only on the device.
• SharedPreferences: System-level key-value storage used to save app settings and in-app purchase status.

The App does not use the following types of third-party services:

• Data analytics services (such as Google Analytics, Firebase Analytics)
• Advertising services (such as AdMob, Facebook Ads)
• Crash reporting services (such as Crashlytics)
• User behavior tracking services
• Cloud synchronization services

6. Permissions Usage

System permissions requested by the App and their purposes:

• Storage Access: Used to save app data and backup files (limited to app sandbox directory)
• Network Access: Only used to open external links (such as developer page, App Store review page), no user data is transmitted

The App does not request the following permissions:

• Camera permission
• Location permission
• Contacts permission
• Microphone permission
• Photo library permission

7. Changes to Privacy Policy

We may update this Privacy Policy from time to time. The updated policy will be posted on this page with a new update date. For significant changes, we will notify you through in-app notifications.

We recommend that you review this Privacy Policy regularly to understand how we protect your information.

8. Contact Us

If you have any questions or suggestions about this Privacy Policy, please contact us through the following methods:

9. Applicable Law

This Privacy Policy is governed by the laws of the People's Republic of China. If you reside in the European Economic Area (EEA), United Kingdom, or other regions, you may have additional rights granted by local laws.