Wordshelf Privacy Policy

1. Information We Collect

We collect different types of information to provide and improve Wordshelf, including but not limited to:

1.1. Information You Provide

• Account information: such as your email address, username, and password (if applicable).
• User content: such as the words you save, posts you share, books you add, your book ratings and reviews, your flashcard answers, likes, comments, and other activity within the app.
• Profile details: such as your display name, profile photo, and any optional bio or information you choose to share.
• Purchase information: if you buy a subscription in the App, we receive a record of it, such as the product, the purchase and renewal dates, and its status, so that we can turn the subscription on for your account. Apple processes the payment. We do not receive or store your payment card details.

1.2. Automatically Collected Information

• Usage data: such as your app interactions, searches, reading activity, and engagement patterns.
• Device data: including device model, operating system, and unique identifiers.
• Log data: such as IP address, crash logs, and diagnostic information for debugging and performance improvement.

1.3. Analytics and Third-Party Services

We use trusted third-party tools to operate and improve Wordshelf, including but not limited to:

• Supabase — for data storage, authentication, and backend infrastructure.
• Mixpanel — for analytics, engagement tracking, and performance measurement.
• OpenAI (ChatGPT API) — for generating or enhancing definitions, memory aids, and language content. OpenAI includes automated content moderation filters to block explicit, violent, or otherwise objectionable text before it reaches users.
• Anthropic (Claude API) — Claude by Anthropic, for generating definitions, memory aids (“mnemonics”), and language content. Anthropic's Claude API includes built-in safety systems intended to reduce harmful or objectionable output.
• RevenueCat — for managing and verifying subscriptions bought in the App through the App Store. RevenueCat receives your Wordshelf account ID, your subscription purchase history, and basic device and app information. It does not receive your payment card details, which Apple handles.

These providers may collect information sent by your device, including but not limited to cookies, unique device identifiers, or other tracking technologies consistent with their own privacy policies.

2. How We Use Your Information

We use collected data for purposes including but not limited to:

• Providing, maintaining, and improving Wordshelf's features and functionality.
• Personalizing your experience, such as showing relevant definitions or reading insights.
• Measuring engagement, retention, and usage patterns through analytics.
• Communicating optional updates, news, or educational insights (if you opt in).
• Detecting, preventing, and addressing technical issues, misuse, or policy violations.
• Complying with legal obligations.
• Researching, developing, and training features, algorithms, and machine-learning models that improve Wordshelf, including using the words you save and the memory aids (“mnemonics”) you view, select, edit, or write. We rely on our legitimate interest in improving and developing our products for this use, and where required you may object or opt out by emailing sourselabsapp@gmail.com.

3. Sharing and Disclosure

We value your privacy and will not sell your personal data. We may share information only in the following cases:

• With service providers who assist in operating Wordshelf (e.g., Supabase, Mixpanel, OpenAI, Anthropic, RevenueCat).
• For analytics or research to help us improve features and performance.
• For legal reasons if required by law, regulation, or government request.
• With your consent or at your direction, for example, when you make a post public or interact with other users.

Certain app activity — such as your username, saved words, or posts — may become publicly visible within the Wordshelf community in the future, including but not limited to your word history, reading progress, or likes. We will provide notice before implementing any significant changes to privacy visibility.

4. User-Generated Content and Community Guidelines

Wordshelf allows users to create and share content (such as posts, saved words, and comments).

To keep our community safe and compliant with App Store policies:

• We maintain a zero tolerance policy for objectionable, abusive, or offensive content.
• Users may not post material that is hateful, discriminatory, violent, sexually explicit, illegal, misleading, or otherwise harmful.
• We use automated filters, the safety and moderation systems of our AI providers (including, but not limited to, OpenAI and Anthropic), and manual review to detect and remove such content.
• Messages you send in Book Clubs are screened automatically, including by AI-based filters, to remove harmful material. A message the screening blocks is not delivered; a message it flags is delivered and reviewed by a person.
• Users can flag or report objectionable content directly within the app.
• Users can block other users whose behavior they find abusive or unwanted.
• All reports are reviewed and acted upon within 24 hours, and offending users may have their content removed or accounts suspended.

By using Wordshelf, you agree to abide by these community standards. Violation of these terms may result in content removal or permanent account suspension.

5. AI-Generated Responses and Moderation

Some content or recommendations within Wordshelf are powered by artificial intelligence (AI) technologies, including, but not limited to, the OpenAI ChatGPT API and Claude by Anthropic.

These AI systems are designed with content moderation rules and filters that automatically prevent explicit, violent, or otherwise harmful language from being displayed.

We may also perform additional filtering and human moderation to ensure AI-generated content aligns with Wordshelf's educational purpose and community guidelines.

AI-generated content should not be considered factual or guaranteed to be accurate. Users are responsible for reviewing and interpreting AI-provided information responsibly.

6. Cookies and Tracking

We may use cookies and similar tracking technologies to monitor app activity and improve your experience. You can adjust your device or browser settings to refuse cookies, though some features may not function properly.

7. Data Storage and Security

Your data is stored in the United States on Supabase infrastructure (hosted on Amazon Web Services) and encrypted in transit. Book Club chat messages are stored on the same infrastructure and kept until you delete them or delete your account.

If you use Wordshelf from outside the United States, including from Mexico or Canada, your information is transferred to and processed in the United States, where privacy laws may differ from those of your country, and it may be subject to lawful access requests under United States law. By using the App you consent to this transfer.

We take reasonable technical and organizational measures to protect your information, but no system is completely secure. You use the app at your own risk.

8. Your Choices and Rights

You can:

• Access or update your account information within the app.
• Delete your account or request data removal by contacting us at sourselabsapp@gmail.com.
• Opt out of analytics or marketing communications at any time.

We will process such requests within a reasonable timeframe.

If you delete your account, we delete the personal data associated with it, including your saved words, books, reading history, and mnemonic selections.

How to Delete Your Wordshelf Account

1. Open the Wordshelf app.
2. Tap the Profile tab (bottom right).
3. Tap the Settings icon (gear icon in the top right).
4. Scroll down to the Account section.
5. Tap Delete Account.
6. Type DELETE in the confirmation field to confirm.
7. Tap Delete my account.
8. Your account and all associated data will be permanently deleted.

Note: This action is permanent and cannot be undone. All your saved words, books, reading history, and mnemonic selections will be deleted.

8A. Users in Mexico, Canada, and Quebec

Mexico

If you are in Mexico, the Federal Law on the Protection of Personal Data Held by Private Parties gives you the rights of access, rectification, cancellation, and opposition (ARCO rights) over your personal data, as well as the right to revoke your consent and to limit the use or disclosure of your data. To exercise any of these rights, email sourselabsapp@gmail.com from the email address on your account and tell us which right you are exercising. We answer within the timeframes the law provides. Our full Spanish-language privacy notice (Aviso de Privacidad), including the identity and address of the data controller, is at wordshelfapp.com/aviso-de-privacidad. You may also file a complaint with Mexico's data protection authority.

Canada and Quebec

If you are in Canada, you may ask to access or correct the personal information we hold about you, withdraw your consent (subject to legal or contractual restrictions), and complain to the Office of the Privacy Commissioner of Canada. If you are in Quebec, the person in charge of the protection of personal information at Sourse Labs LLC is its founder, reachable at sourselabsapp@gmail.com, and you may complain to the Commission d'accès à l'information du Québec. Your information is stored outside Quebec, in the United States, as described in Section 7. Our product analytics (Mixpanel) can identify your device; you can turn this off for your account at any time by emailing us. A French version of this policy is available on request.

9. Age Requirement

Wordshelf is intended for adults 18 and older. We do not knowingly collect personal data from anyone under 18.

If we learn that someone under 18 has provided personal information, we will delete it promptly.

10. Future Features and Changes

We may expand our features to include, but not limited to:

• Advertising or sponsorships to support the app.
• Public visibility of certain user activity (e.g., posts or word lookups).

If these changes occur, we will update this Privacy Policy and notify users as required.

11. Enforcement and Compliance

We take reports of abusive or objectionable content seriously.

If you encounter such content, please use the in-app “Report” feature or contact sourselabsapp@gmail.com.

We review all reports and take appropriate action — including removing content or suspending accounts — within 24 hours of receiving a valid report.

12. Changes to This Privacy Policy

We may update this Privacy Policy periodically.

Your continued use of Wordshelf after any updates constitutes acceptance of the revised policy.

13. Contact Us

If you have any questions, feedback, or requests regarding this Privacy Policy or community guidelines, please contact us at: sourselabsapp@gmail.com

Sourse Labs LLC, 9 Poplar Point Road, Edgewater, MD 21037, United States.