Privacy Policy

This Privacy Policy explains how Tussna ("we", "us", or "our") handles your information when you use Tussna mobile applications ("the App") — including our suite of exam preparation and study tools.

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Information We Collect

We collect only the minimum information necessary to operate the App:

• Account & Profile Information: Your authentication identifier (provided via Apple Sign-In or email address), user-selected profile name, selected avatar icon, and account creation timestamps.
• Content Diagnostic Reports: If you choose to report an issue with a flashcard, question, or study resource, we collect the specific contentId (e.g., cardId or questionId), the selected reason (e.g., typo, incorrect answer), and a timestamp linked securely to your account identifier to prevent system spam.
• Security Integrity Data: Hardware and software attestation tokens collected automatically via Google Firebase App Check to mathematically verify that requests originate from an unmodified, authentic version of our App.
• Anonymous Usage Data: Feature interactions, app version, operating system, and session activity collected in aggregate.

We do not collect any photos, biometric data, payment information, or sensitive personal health records.

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How We Use Your Information

We use your information only to:

• Create and manage your user profile account.
• Review and resolve submitted material corrections and content reports.
• Protect our infrastructure and intellectual property from fraudulent access or automated data scraping using App Check.
• Improve app stability, performance, and study features in aggregate.

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Push Notifications

We may send you push notifications regarding daily study reminders, streak milestones, or important content updates.

• Consent: These notifications are strictly opt-in. The App will never send push notifications unless you explicitly grant permission through the system prompt.
• Control: You can change your notification preferences or disable notifications completely at any time by navigating to your device's system settings for the App.
• Data Use: We do not track your location or use notifications for advertising or promotional third-party campaigns.

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Study & Progress Data

All core study progress, flashcard or question history, performance metrics, streaks, and practice exam results are processed and stored locally on your device via secure disk storage. This personal study data never leaves your device and is not transmitted to our servers or any third party.

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Subscription & Payments

All purchases and subscriptions are processed entirely by the App Store. We do not collect, store, or have access to your payment information. Subscription status is verified locally through system framework configurations (such as Apple's StoreKit) to unlock premium features (such as advanced review modes and extended practice features).

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Third-Party Services

We use the following infrastructure partners to deliver core application services:

• Firebase (Google): Used for secure user profile authentication, storing diagnostic reporting tokens, and executing security attestation hooks.
• Apple App Store: Used for subscription status tracking and processing in-app purchases safely.

No personal data is shared with third parties for advertising or tracking purposes. Each infrastructure service is governed by its own respective safety policies.

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Data Storage and Security

Account authentication data and user reports are securely stored and managed by Google Firebase using industry-standard physical and electronic encryption safety frameworks. Submissions inside our report records are write-only structures that are protected from public read access.

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Data Retention & Deletion

We retain your profile data only while your account remains active. You may request permanent account deletion at any time via the Delete Account option found inside the App's Settings menu.

Upon execution of account deletion:

• Your authenticated profile and identity records are permanently deleted from our live cloud databases.
• No personal user data is retained on our cloud servers.

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International Users

Authentication and application data managed by Firebase may be securely hosted and processed outside your native country, including on servers located inside the United States. By using the App, you acknowledge and consent to this transfer infrastructure.

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Children's Privacy

The App is intended for professional candidates, students, and users aged 17 and older. We do not knowingly collect data from individuals under 17. If we discover such data has been collected inadvertently, it will be removed from our systems immediately.

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Your Rights

Depending on your physical location, you may have the statutory right to:

• Access your stored profile data records.
• Request immediate correction or complete deletion of data.
• Withdraw systemic processing consent.

To exercise any of these technical user rights, please reach out to us at our developer contact framework below.

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Changes to This Policy

We may update this Privacy Policy from time to time to align with new system features or legal framework shifts. Continued use of the App after updates are published means you accept the revised guidelines.

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