Privacy Policy

Last updated: September 8, 2026
Effective date: September 8, 2026

Welcome to MosaicDay (hereinafter referred to as "this App").

We attach great importance to your personal information and privacy protection. This Privacy Policy explains how we handle relevant information when you use this App, as well as the rights you are entitled to.

Services Provided by This App

This App is a diary application for recording, organizing, and managing personal content.

Key features include:

• Diary entries
• Image management
• Tag organization
• Guided question prompts
• Account login
• Membership services
• Data backup and synchronization (configured by you)
• Diary reminders

To provide the features above, this App may process information that you voluntarily provide or authorize.

Types of Information We Process

Account Information

When you register or log in to your account for this App, this App may process:

• Email address;
• Account identifier information;
• Login authentication information;
• Membership status information;
• Subscription-related information.

This information is used to:

• Create and manage your account;
• Verify your identity;
• Provide account login services;
• Maintain your membership status;
• Provide membership-related features.

Your email address may be associated with your account identity and used to identify and manage your account.

Information You Actively Create

When you use this App to record content, this App may process:

• Diary text content;
• Image content;
• Tag information;
• Template content;
• App configuration;
• User-customized settings.

This information is actively created, entered, or imported by you.

Your diary content is your personal content.

By default:

• Diary data is stored locally on your device;
• This App will not proactively upload your diary content.

If you actively enable synchronization, backup, or sharing features, the relevant data will be processed in the manner you choose.

Device-Related Information

To ensure the App operates properly, this App may process certain device-related information, such as:

• Device model;
• iOS system version;
• App version information;
• Device identifier information.

This information is used to:

• Identify logged-in devices;
• Provide account security-related features;
• Ensure App compatibility;
• Troubleshoot operational issues;
• Optimize the App experience.

Device identifier information will not be used for ad tracking, nor to provide user profiles to third-party advertising platforms.

In-App Purchases and Subscriptions

If you purchase in-app subscriptions or membership services, this App uses the in-app purchase capabilities provided by the Apple App Store.

This App also uses RevenueCat to provide subscription management services.

Information that may be processed includes:

• Purchase status;
• Subscription status;
• App user identifier information;
• Subscription-related information.

Payment-related information, such as:

• Bank card information;
• Payment password;
• Apple ID password;

All of the above are processed by Apple in accordance with its privacy policy.

This App does not obtain your payment account information.

Permission Descriptions

Photos Permission

When you actively select images to add to your diary, this App may request permission to access your photos.

This permission is used to:

• Select images from the photo library;
• Add images to diary content.

We will not access your photo content without your active action.

You can manage or disable photo permissions at:

Settings → Privacy & Security → Photos

Notifications Permission

If you enable the reminder feature, this App may request notification permission.

This permission is used to:

• Diary reminders;
• Displaying reminder notifications.

Notification content is generated based on your settings.

You can disable notification permission at any time in system settings.

Network Access

When you use features that require a network connection, this App may access the network.

For example:

• Account login;
• Membership status verification;
• Subscription status synchronization;
• Data synchronization;
• Obtaining necessary network resources.

Network access is used solely to provide the relevant features.

Data Storage

Local Storage

Your data may be stored locally on your device, including:

• Diary content;
• Images;
• Tags;
• App settings.

This App will not upload this content without your authorization.

Account Server

To provide account-related services, this App's servers may retain:

• Email address;
• Account identifier;
• Login-related information;
• Membership status information;
• Device-related identifier information.

This information is used to:

• User identity verification;
• Account management;
• Providing account-related services.

Synchronization Services Configured by You

If you actively enable synchronization features such as WebDAV, this App may process:

• WebDAV service address;
• Username;
• Password or access credentials;
• The data content you choose to synchronize.

The above information is used solely to implement the data synchronization feature that you actively enable.

During synchronization, this App reads, uploads, or downloads synchronized data based on your actions.

We will not use your synchronized data for advertising, analytics, or other unrelated purposes.

Synchronized data is stored and managed by the service provider you choose.

You can stop using the synchronization feature at any time.

Third-Party Services

To provide certain features, this App may use the following third-party services.

Apple StoreKit

Service provider:

Apple Inc.

Purpose:

• In-app purchases;
• Subscription payment processing.

Information that may be processed:

• Purchase status;
• Subscription status.

Payment-related information is processed by Apple in accordance with its privacy policy.

RevenueCat

Service provider:

RevenueCat, Inc.

Purpose:

• Managing app subscription status;
• Providing membership status synchronization services.

Information that may be processed:

• Subscription status;
• Purchase-related information;
• App user identifier information.

RevenueCat is not used to store your diary content or image data.

RevenueCat Privacy Policy:

https://www.revenuecat.com/privacy/

WebDAV Services

If you use the WebDAV synchronization feature:

Relevant data will be sent to the WebDAV service you actively configure.

This service is selected and managed by you.

Different service providers may have their own independent privacy policies.

Information Sharing

We will not sell, rent out, or unlawfully share your personal information.

Except in the following circumstances, we will not provide your personal information to third parties:

• With your explicit authorization;
• As required by laws and regulations;
• When necessary to protect the legitimate rights and interests of users, developers, or the public.

Data Security

We take reasonable measures to protect the security of your information, including:

• Restricting unauthorized access to information;
• Applying reasonable data protection measures;
• Continuously improving App security.

However, no internet environment is absolutely secure. We recommend that you:

• Properly safeguard your account information;
• Use a secure device environment.

Your Rights

Viewing and Managing Data

You can view, modify, or delete the data you create within the App.

Deleting Data

You can delete relevant content within the App.

Account Deletion

You can apply to delete your account.

After account deletion:

• Your account information will be deleted or handled in accordance with relevant regulations;
• Membership status information associated with the account will be handled in accordance with business rules;
• Once deletion is complete, you will no longer be able to log in with that account.

Deleting your account will not automatically delete data stored locally on your device.

To delete local data, please use the in-app deletion feature or uninstall the App.

How to delete:

Settings → Account Security → Delete Account

Or contact us:

Email:

service@darkbox.cn

Withdrawing Permission Authorization

You can go to iOS system settings to:

• Disable photo permissions;
• Disable notification permissions;
• Manage App permissions.

Disabling permissions may cause certain features to become unavailable.

Protection of Minors

This App is not specifically designed to provide services to minors.

If a minor uses this App, it should be used under the guidance and consent of a guardian.

Privacy Policy Updates

We may update this Privacy Policy under the following circumstances:

• Changes to App features;
• Legal and regulatory requirements;
• Adjustments to privacy protection measures.

The updated Privacy Policy will be published on this page.

Contact Us

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

Developer:

Zhang Limin

Person in charge:

Zhang Bo

Email:

service@darkbox.cn