Privacy Policy

Last updated: March 2026

Introduction

MindBuds ("we," "our," or "us") operates StoryBook (心芽绘本), a multilingual picture-book app designed for families to read together. This Privacy Policy explains how we handle your information in plain, straightforward language.

Designed for Families

StoryBook is built for parents and caregivers to enjoy with children ages 0-5. A parent or guardian registers the account and makes all choices on behalf of the family — including whether to record audio, share recordings, or make purchases.

Children's Privacy (COPPA)

We comply with the Children's Online Privacy Protection Act (COPPA). We do not knowingly collect personal information directly from children under 13. A parent creates the account and operates all recording and sharing features. By doing so, the parent provides informed consent for the related information to be collected.

Information We Collect

• 国内版账号信息：你通过邮箱和密码注册时提供的邮箱及显示名称。国内版不使用 Google 登录。
• Device Identifiers: An anonymous device ID used to support guest mode.
• Usage Data: Reading history collected anonymously to help us improve content.
• Recordings: Read-aloud audio recorded by the parent, which may include a child's voice in the background.
• 国内网页版暂不提供在线购买；海外版会员和购买记录不会自动迁入。

Recordings

Audio recordings are stored on your device and on our servers. You choose whether to upload a recording and whether to make it public. By default, recordings are visible only to you. You can delete any recording at any time from the App.

How We Use Information

We use your information to:

• Sync your reading progress across devices.
• Manage your subscription.
• Provide the recording and playback features.
• Improve our content and app experience.

Information Sharing

We do not sell personal information. We share data only with the service providers needed to run the App:

• 阿里云杭州服务器：国内版账号、书架、上传的私人绘本、照片和录音存储于独立数据库及私有目录。
• 当前国内版未启用 RevenueCat 支付、邮件服务及云端创作模型，不会因这些未启用功能发送你的创作素材。
• 通过你自己的 Agent 创作时，素材由你选择的 Agent 和图片工具处理；上传到国内书架前请确认其处理范围。

Data Retention

• Account information is retained until you delete your account.
• Recordings are retained until you delete them or close your account.
• Anonymous usage data may be kept in aggregate form after account deletion.

Data Security

We take reasonable measures to protect your information, including encrypted data transmission (TLS) and secure server storage. No system is perfectly secure, but we work hard to safeguard your data.

Your Rights

You have the right to:

• Access the personal data we hold about you.
• Correct inaccurate data.
• Delete your account and all associated data.
• Export your data.

You can do this in the App's settings or by emailing us.

For Users in Europe (GDPR)

If you are in the European Economic Area, we process your data on the following legal bases:

• Contract — to provide the service you signed up for.
• Consent — for optional features like public recordings.
• Legitimate interest — to improve our products and prevent misuse.

You also have the right to data portability, to restrict processing, and to lodge a complaint with your local data protection authority.

Changes to This Policy

If we make significant changes to this policy, we will notify you through an in-app notification before the changes take effect.

Contact Us

If you have any questions about this policy, please reach out:

liangzhewei@gmail.com