Important Notice: Dear users, we highly value your privacy rights. This Privacy Policy is designed to help you understand how we collect, use, store, and protect your personal information when you use the FlashMath application. Please read and understand all terms of this policy before using our services.
1. Information Collection
To provide you with complete service functionality, FlashMath collects the following information when you use our services:
1.1 Information You Provide
Account Information: When you sign in with your Google account, we collect your basic Google account information, including your name, email address, and profile picture.
User Settings: Preferences you actively set, such as sound effects toggle, vibration feedback, voice broadcast volume, etc.
Training Records: Performance data generated after you complete training, including accuracy rate, response time, score, etc.
1.2 Information Automatically Collected When You Use the Service
Device Information: Basic information such as device model, operating system version, screen resolution, etc.
Usage Data: Usage behavior data such as training mode selection, training duration, feature usage frequency, etc.
Log Information: Error logs and performance data during app runtime, used to improve service stability.
1.3 Information Collected by Firebase Services
We use Firebase as our backend service, including the following Firebase products:
Service
Information Collected
Purpose
Firebase Authentication
Google account information, email (email login only)
User identity authentication
Firebase Firestore
User data, training records, leaderboard data
Cloud data storage and synchronization
Firebase Analytics
App usage behavior, user interactions
Improve user experience
Firebase Cloud Messaging
Device Token
Push notification service
2. Information Use
The information we collect will be used for the following purposes:
Providing, maintaining, and improving our services
Creating and managing your user account
Synchronizing your training data and progress to the cloud
Generating leaderboard and achievement system data
Sending service-related notifications and reminders
Analyzing usage behavior to optimize product experience
Detecting and preventing fraud and abuse
3. Information Storage
3.1 Local Storage
Some of your data is stored locally on your device:
Room Database: Stores your 100 most recent training records, stored in the app's private directory.
DataStore: Stores your app settings and preferences.
Cache Data: Temporary cache files generated during app operation.
3.2 Cloud Storage
Excess data is automatically uploaded to Firebase Firestore for cloud backup, ensuring your data is not lost when you change devices.
3.3 Data Retention Period
We will retain your personal information during your use of our services. After you cancel your account, we will delete your personal data within a reasonable period.
Special Note: Data stored locally (such as training records) is only stored on your device. Uninstalling the app will cause this data to be lost. Please ensure data synchronization is completed before uninstalling.
4. Information Sharing
We commit to not selling your personal information to third parties. Exceptions include:
Service Providers: Third-party suppliers that provide us with cloud storage, push notifications, data analysis, and other services.
Legal Requirements: When disclosure is required by law, such as responding to legitimate requests from government agencies.
Your Consent: We will share your information with relevant third parties after obtaining your explicit consent.
5. User Rights
You have the following rights regarding your personal information:
Right of Access: You have the right to access your account information and training data.
Right of Correction: You have the right to correct inaccurate personal information.
Right of Deletion: You have the right to request deletion of your personal data.
Right of Portability: You have the right to export copies of your training data.
Right to Cancel Account: You have the right to cancel your account at any time. After cancellation, your data will be deleted or anonymized.
6. Cookies and Tracking Technologies
We may use cookies and similar tracking technologies to collect and use your information, primarily for:
Remembering your preference settings
Analyzing app usage trends
Optimizing user experience
7. Children's Privacy Protection
Important Notice: FlashMath is primarily designed for children aged 4-12. We highly prioritize children's privacy protection.
Special notes regarding children's privacy:
Age Restriction: Our service is available to users aged 4 and above. Children under 13 years of age require consent from a parent or guardian to use the service.
Parental Controls: Parents or guardians can manage children's account information through Google account association.
Data Minimization: We only collect the minimum information necessary to provide services.
No Targeted Advertising: We do not collect or use children's personal information for advertising targeting.
Parental Rights: Parents have the right to view, modify, or delete their children's personal information. To exercise these rights, please contact us through the information below.
8. Data Security
We employ industry-standard security measures to protect your data:
Data transmission uses TLS/SSL encryption
Cloud data is stored on secure Firebase servers
Strict access controls, only authorized personnel can access user data
Regular security audits and vulnerability fixes
However, please note that internet transmission and electronic storage cannot guarantee 100% security, and we cannot promise absolute data security.
9. Third-Party Services
Our app may contain links to third-party services. We are not responsible for the privacy practices of third-party services. We recommend that you read their privacy policies before using third-party services.
10. Privacy Policy Updates
We may update this Privacy Policy from time to time. The updated version will be posted here. For significant changes, we will notify you through in-app notifications or email.
Last Update Date: May 28, 2026
Version Number: V1.1
Previous Versions: You can obtain previous versions of the Privacy Policy by contacting us
11. Contact Us
How to Contact Us
If you have any questions, comments, or suggestions about this Privacy Policy, please contact us through the following methods:
App Name: FlashMath - Mental Arithmetic Training
Developer: ThreeHalf Studio
Package Name: com.threehalf.flashmath
Contact Email:jay.qiu087@gmail.com
We will respond to your requests as soon as possible, generally within 30 days.
12. Governing Law and Dispute Resolution
Applicable Law: This Privacy Policy is governed by the laws of the People's Republic of China.
Dispute Resolution: Any disputes arising from this Privacy Policy shall be resolved through friendly negotiation between both parties; if negotiation fails, either party may file a lawsuit with the competent People's Court.
Language: This Privacy Policy is written in English. If there is any conflict between the English version and other language versions, the English version shall prevail.