Privacy Policy

SmartFlip (Smart Trivia) | Effective Date: May 7, 2026 | Version 1.1

RedMoon Studio ("Company", "we", "us") operates the SmartFlip mobile application. This Privacy Policy explains how we handle information when you use our app.

1. Information We Collect

What We Do NOT Directly Collect

The Company does NOT directly collect any of the following and operates no servers:

• Personal identifiers such as name, email, phone number, date of birth
• Location data (GPS)
• Contacts or call history
• Passwords or payment information

Information Processed by Third-Party SDKs

The following Google services process anonymous/non-identifiable data for ad delivery and app stability. This data is sent directly to Google, not through Company servers.

• Google AdMob (Advertising): Advertising ID (Android Advertising ID), device model/OS version, IP address, ad interactions (impressions/clicks) — for ad delivery and fraud prevention
• Firebase Analytics: App instance ID, screen view events, user properties (locale, etc.), anonymous usage patterns — for app improvement statistics
• Firebase Crashlytics: Crash stack traces, device model/OS version, app version — for bug diagnosis and stability improvement (release builds only)

All data above is anonymous or non-identifiable and is not used to directly identify you. For details, see:

• Google Privacy Policy
• Firebase Privacy and Security
• AdMob Data Disclosure

Data Stored Only On Your Device

The following data is stored exclusively on your device's storage and is never transmitted to any external server:

2. App Permissions

SmartFlip requests the following permissions only for the stated purposes:

Even if you deny camera or photo permissions, all learning features will work normally (only image attachment is disabled).

3. How We Use Information

We do not operate our own servers. Your data is processed only on your device for the purposes below, or anonymous data is sent to Google services (AdMob, Firebase) for the following purposes:

1. Learning Features: Flashcard study, quizzes, spaced repetition algorithm
2. User Content Management: Saving, reviewing, and studying user-created cards
3. Statistics Display: Visualizing your own learning progress and performance
4. Gamification: EXP, levels, daily missions, streak badges
5. Ad Delivery (Google AdMob): Banner/interstitial/rewarded ads to support free app operation
6. App Stability (Firebase Crashlytics): Automated crash reports for bug diagnosis
7. Usage Analytics (Firebase Analytics): Anonymous usage pattern analysis for UX improvement

4. Third-Party Sharing and Data Processors

The Company itself does not share user personal information with third parties. However, anonymous/non-identifiable data is transmitted directly to the Google services listed in Section 1 above.

Data Processors (Google LLC)

You can reset your advertising ID or opt out of ad personalization in your device settings (Android: Settings > Google > Ads > Delete advertising ID).

5. Data You Voluntarily Share

The following data is processed only when you take explicit action:

• .smartflip file sharing: When you share a card set with others, you choose the share target (KakaoTalk, email, etc.) yourself. The file contains only card content; no personal data such as learning progress is included.
• .sfbackup file backup/restore: You can create backup files yourself and store/restore them from external storage. We are not involved in this process.
• Feedback email: When you write an email through Settings > Feedback, only the content you type is sent to us.

6. Data Retention and Deletion

We do not store any user data ourselves. All data is stored on your device and can be deleted as follows:

• App uninstallation: All learning data, user cards, and settings are immediately and permanently deleted.
• In-app data clearing: Cards and learning progress can be deleted individually from the settings menu.
• Trash auto-cleanup: Deleted cards are permanently removed after 30 days.

7. Your Rights

1. Data access: View all your learning data in the in-app statistics screen
2. Data modification/deletion: Edit/delete cards directly in the card management screen
3. Data backup: Export your data as .sfbackup file
4. Complete data deletion: Uninstall the app to immediately delete all data

8. Children's Privacy

SmartFlip does not knowingly collect personal information from children under the age of 13. The Company does not directly collect user-identifying information, and ads are configured to comply with Google AdMob's families policy to block inappropriate content.

9. Security

• All learning data is stored only on the device (no Company server)
• Image files are kept in app-private storage (inaccessible to other apps)
• Automatic sanitization of card input (HTML/script removal, XSS prevention)
• Automatic detection and warning of sensitive information patterns (Resident ID, card number, SSN, My Number, etc.)
• Sensitive information warning dialog before file sharing
• All third-party (Google) communications are encrypted via HTTPS
• Crashlytics is enabled only in release builds (development/test data is excluded)

10. Changes to This Policy

If this Privacy Policy changes, the changes will be notified through app updates or on this page. Material changes (e.g., adding new third-party SDKs, expanding data collection scope) will be announced 7 days before they take effect.

11. Contact Us

Account & Data Deletion Request

App: Smart Trivia (SmartFlip)

Developer: RedMoon Studio (heyday07@gmail.com / teamstar13000@gmail.com)

1. In-app Self-service

• Delete local data: Phone Settings → Apps → SmartFlip → Storage → "Clear storage", or uninstall the app
• Stop cloud sync: In-app [Settings → Cloud Backup → Sign out]

2. Permanent cloud data deletion request

To permanently delete cloud-stored data (level / EXP / streak / badges / missions / quiz history) tied to your Google account:

1. Send an email — Subject: [SmartFlip] Account Deletion Request, Body: the Google account email used to sign in
2. Email: teamstar13000@gmail.com
3. Processing time: within 7 business days
4. Confirmation: email reply once deletion is complete

3. Data deleted vs retained

4. Cards / Images

SmartFlip does not store your cards, decks, or images in the cloud. This data lives only on your device and is removed when you uninstall the app or reset your phone.