Privacy Policy

Effective Date: January 16, 2026

1. Introduction

Welcome to Flash ("we," "our," or "us"). We are committed to protecting your privacy and ensuring you have a positive experience using our vocabulary learning application. This Privacy Policy explains how we collect, use, disclose, and safeguard your information.

2. Information We Collect

2.1 Information You Provide

Account Information: Email address, display name, and profile picture when you create an account
Learning Preferences: Your selected learning goals, difficulty level, and daily targets
User Content: Custom vocabulary lists, collections, and favorites you create

2.2 Information Collected Automatically

Usage Data: Questions answered, accuracy rates, time spent learning, streaks, and progress metrics
Device Information: Device type, operating system, app version, and unique device identifiers
Analytics: App performance, crash reports, and feature usage patterns

2.3 Information from Third Parties

Authentication Providers: If you sign in with Google or Apple, we receive your basic profile information
Payment Processors: We use RevenueCat and platform app stores to process subscriptions; we do not store payment card details

3. How We Use Your Information

Provide and personalize your learning experience
Track your progress and adapt difficulty to your skill level
Sync your data across devices when signed in
Process subscription payments and manage premium features
Send learning reminders and streak notifications (if enabled)
Analyze usage patterns to improve the app
Detect and prevent fraud or abuse
Comply with legal obligations

4. Data Sharing

We do not sell your personal information. We may share data with:

Service Providers: Firebase (authentication, database), Google Analytics, AdMob (for free tier ads), RevenueCat (subscriptions)
Legal Requirements: When required by law, legal process, or to protect our rights
Business Transfers: In connection with a merger, acquisition, or sale of assets

5. Advertising

Free users may see advertisements powered by Google AdMob. Ads are served based on non-personalized targeting by default. Premium subscribers do not see ads.

6. Data Retention

Account Data: Retained while your account is active and for 30 days after deletion request
Learning Progress: Retained while your account is active
Anonymous Analytics: Retained for up to 26 months

7. Your Rights

Depending on your location, you may have rights to:

Access your personal data
Correct inaccurate data
Delete your account and data
Export your data
Opt out of marketing communications
Restrict processing of your data

To exercise these rights, contact us at the email below or use the in-app settings.

8. Data Security

We implement industry-standard security measures including:

Encryption in transit (TLS/SSL)
Encryption at rest for sensitive data
Secure authentication via Firebase
Regular security audits

9. Children's Privacy

Flash is not directed to children under 13. We do not knowingly collect personal information from children under 13. If you believe we have collected such information, please contact us immediately.

10. International Data Transfers

Your data may be transferred to and processed in countries other than your own, including the United States where our service providers operate. We ensure appropriate safeguards are in place.

11. Changes to This Policy

We may update this Privacy Policy periodically. We will notify you of material changes via the app or email. Continued use after changes constitutes acceptance.

12. Contact Us

If you have questions about this Privacy Policy or our data practices, contact us at:

Email: cortexdigitaltech@gmail.com

This privacy policy was last updated on January 16, 2026.