Privacy Policy

1. Information We Collect

a) Information You Provide Directly

• Account information (email address, password).
• Words you save to your library and custom ternary code mappings. This data is stored on our servers and tied to your account to enable cross-device syncing.
• Communications with us (support requests or feedback).
• Payment and billing information when you subscribe to a paid plan. We do not store your full credit card number. Payments are processed securely by third-party providers (see Section 3).

b) Information Collected Automatically

• Word frequency and usage data (which words are replaced, how often). This data is linked to your account to enable cross-device syncing and personalized learning progress.
• Reading session statistics (total words on page, coverage rate). We do not collect or store the URLs of pages you visit.

c) Chrome Extension Data

The Ternarix Chrome extension replaces your saved words with ternary symbols as you browse. To do this, the extension injects a content script on all web pages you visit (except ternarix.com). All word detection and replacement happens locally in your browser; no page content is sent to our servers.

The extension requests the following browser permissions:

• All URLs (content script): The extension needs access to all web pages so it can find and replace your saved words with ternary symbols wherever you browse. The extension does not read or transmit page content; it only scans for words that match your saved library.
• Storage: Used to save your word library, preferences, and settings. Data stored via chrome.storage.sync syncs across devices where you are signed into Chrome. Authentication tokens and cached data are stored locally on your device via chrome.storage.local and are not synced.
• Identity: Used to enable Sign in with Google. This permission allows the extension to initiate Google's OAuth authentication flow. See Section 3 for details on data shared with Google during sign-in.
• Side Panel: Provides the library management interface where you can view, search, and manage your saved words.

Your word library syncs to Ternarix servers for cross-device access. Uninstalling the extension removes local data from your browser; your account and library remain on our servers and can be accessed by reinstalling or using the website. You can delete your account data entirely from the Account page on the website.

d) Mobile Application Data

The Ternarix mobile app includes an in-app browser that replaces saved words with ternary symbols as you browse. The app does not collect or store the URLs of pages you visit or the content of those pages. If you purchase a subscription or make in-app purchases, transaction data is handled by Apple (App Store) or Google (Play Store) and their respective payment processors.

2. How We Use Information

We respect your privacy and are committed to protecting it. We do not sell, rent, or trade your personal data to third parties.

We use your information to:

• Deliver Ternarix features and services.
• Sync your word library, reading statistics, and settings across devices.
• Maintain and improve performance, reliability, and security.
• Personalize your experience and suggest relevant content.
• Respond to your requests and communicate with you.
• Analyze aggregate usage to improve Ternarix.

The Ternarix Chrome extension uses Chrome platform APIs (chrome.storage, identity, sidePanel, and content script access to web pages) solely to provide its core word-replacement and library-management functionality. Data from these APIs is not sold to third parties or used for purposes unrelated to Ternarix's core features.

The use and transfer to any other app of information received from Google APIs will adhere to the Google API Services User Data Policy, including the Limited Use requirements. The use of information received from Google APIs will adhere to the Chrome Web Store User Data Policy, including the Limited Use requirements.

3. Sharing Information

We may share your information:

• With service providers that help us operate Ternarix, including Supabase (database, hosting, and authentication), Vercel (website hosting), and Apple App Store / Google Play Store (subscription billing).
• As required by law or to protect rights and safety.
• If Ternarix is involved in a business transfer (merger, acquisition).
• With your explicit consent, and only for purposes directly related to providing, improving, or supporting Ternarix.
• Google Sign-In: If you choose to sign in with Google, your authentication is handled through Google's OAuth 2.0 service. During this process, Google receives confirmation that you are signing into Ternarix. We receive only your name and email address from Google to create or access your account. Google's use of your information is governed by Google's Privacy Policy. Email and password login is also available as an alternative.

We may publish aggregated, anonymized data (e.g., usage trends).

4. Payments and Subscriptions

Ternarix may offer paid plans, subscriptions, and in-app purchases. We use third-party payment processors to handle transactions securely. We do not store your full payment card details on our servers.

Our payment processors may collect:

• Billing name and address.
• Payment method details (processed and stored by the provider).
• Transaction history and subscription status.

For subscriptions purchased through the Apple App Store or Google Play Store, billing and renewal are managed entirely by Apple or Google according to their respective terms and privacy policies. You can manage or cancel subscriptions through your device settings.

We receive only the information necessary to verify your subscription status and provide the appropriate level of service (e.g., free or premium).

5. Cookies and Local Storage

Ternarix uses browser local storage to maintain your authentication session and store your preferences. The Chrome extension additionally uses chrome.storage.sync to persist extension settings across devices. We use cookies to improve your experience. You can manage cookie preferences through the cookie consent banner displayed on our website.

6. Data Retention

We retain different types of data for different periods:

• Account data (email, password hash, preferences): retained while your account is active.
• Word library: retained while your account is active.
• Reading session statistics (word frequency, coverage metrics): retained while your account is active.
• Authentication tokens: session-based, stored locally on your device and cleared on logout or uninstall.

If you delete your account, personal data is removed from active databases immediately and securely deleted from system backups within 60 days. You can delete your account anytime from the Account page on the website.

7. Data Security

We take reasonable measures to protect your information, including encryption, access controls, and row-level security on our database. All personal and sensitive user data is transmitted over secure HTTPS connections using modern cryptography. No system can be guaranteed completely secure.

To help keep your data safe, we recommend:

• Use strong passwords and protect your login credentials.
• Log out of your account when using shared devices.
• Be cautious of phishing emails or suspicious links claiming to be from Ternarix.
• Keep your browser and extensions up to date.

8. Your Rights

Depending on your location, you may have rights to:

• Access or update your information.
• Delete your data.
• Restrict or object to processing.
• Request data portability.

To exercise these rights, use the Account page on our website or contact us using the details below.

For users in the European Economic Area (GDPR)

If you are located in the EEA, you have additional rights under the General Data Protection Regulation (GDPR), including the right to:

• Request access to, correction of, or deletion of your personal data.
• Object to or restrict the processing of your data.
• Receive your data in a portable format (data portability).
• Withdraw consent at any time, where processing is based on consent.
• Lodge a complaint with your local data protection authority.

We process your data on the legal bases of contractual necessity (to provide Ternarix services), legitimate interest (to improve our product), and consent (where applicable). We do not engage in automated decision-making that produces legal or similarly significant effects. We may use your usage data to personalize your experience and provide relevant recommendations.

For California residents (CCPA)

If you are a California resident, the California Consumer Privacy Act (CCPA) provides you with the following rights:

• Right to Know: You can request what personal information we collect, use, and disclose.
• Right to Delete: You can request deletion of your personal information.
• Right to Opt-Out: We do not sell your personal information. If this ever changes, we will provide a clear opt-out mechanism.
• Non-Discrimination: We will not discriminate against you for exercising your CCPA rights.

To exercise any of these rights, contact us through our contact form or at [email protected]. We will respond within the timeframes required by applicable law.

9. Children's Privacy

Ternarix is not intended for children under 16. We do not knowingly collect data from children under 16.

10. International Transfers

We may process data in countries other than your own. Where required by law, we ensure appropriate safeguards are in place to protect your data in accordance with this Privacy Policy. By using Ternarix, you acknowledge these transfers.

11. Changes to This Policy

We may update this policy. If changes are material, we will notify you before they take effect. Continued use of Ternarix after changes constitutes acceptance of the updated policy.

12. Contact Us

Nichido Solutions Inc. is the data controller responsible for your personal data under this Privacy Policy.

If you have questions or wish to exercise your rights under this Privacy Policy, please contact us through our contact form or email us directly at [email protected].