Privacy Policy

Flippy - Page Flip PDF Reader · Effective March 1, 2026

Overview

Flippy is a PDF reader available on Android and iOS. Your privacy matters to us. This policy explains what data Flippy accesses, how it is used, and your choices.

Data Stored on Your Device

Flippy stores all core data locally on your device. This data never leaves your device unless you explicitly enable Cloud Sync (a premium feature).

• PDF files you import into the app
• Bookmarks, highlights, and annotations you create
• Reading progress (current page, reading history)
• App preferences (theme, reading settings, tags)
• Drawings made with the draw tool

This data is stored in your device's local storage and is not accessible to us or any third party.

Cloud Sync (Premium Feature)

If you choose to enable Cloud Sync, the following applies:

• Authentication: You sign in with your Google account via Google Sign-In. We receive your name, email address, and profile photo to display in the app. We do not store your Google password.
• Data synced: Bookmarks, highlights, reading progress, tags, and reading statistics are stored in Google Firebase Firestore, associated with your Google account.
• PDF files are never uploaded. Only your reading data (bookmarks, progress, etc.) is synced.
• You can delete your cloud data at any time from the app's settings.

AI Read-Aloud (Premium Feature)

Flippy offers text-to-speech powered by OpenAI's Text-to-Speech API.

• When you use this feature, the text content of the current page is sent to OpenAI's servers to generate audio.
• No PDF files are uploaded. Only extracted text is transmitted.
• OpenAI processes the text and returns audio. OpenAI's use of this data is governed by OpenAI's API Data Usage Policies. Per their policy, data sent via the API is not used to train their models.

AI Q&A and Summaries (Premium Feature)

Flippy uses Anthropic's Claude API to answer questions about your PDFs and generate summaries.

• When you use this feature, the text content of your PDF is sent to Anthropic's Claude API along with your question.
• This data is processed to generate a response and is not stored by Flippy.
• Anthropic's use of this data is governed by Anthropic's Commercial Terms. Per their policy, data sent via the API is not used to train their models.

In-App Purchases

Flippy offers optional premium subscriptions. All purchases are processed by Apple (App Store) or Google (Google Play). We do not collect or store any payment information. Purchase management and billing are handled entirely by the respective platform.

Analytics and Tracking

Flippy does not use any analytics, advertising, or tracking services. We do not collect usage data, crash reports, device identifiers, or any other telemetry. There are no ads in the app.

Third-Party Services

Flippy integrates with the following third-party services only when you explicitly use the corresponding features:

• Google Sign-In — for Cloud Sync authentication
• Google Firebase / Firestore — for cloud data storage
• OpenAI Text-to-Speech API — for AI Read-Aloud
• Anthropic Claude API — for AI Q&A and summaries
• dictionaryapi.dev — for in-app word definitions (only the selected word is sent; no account or API key required)

Each service is subject to its own privacy policy. No data is shared with these services unless you actively use the feature.

Children's Privacy

Flippy is not directed at children under the age of 13. We do not knowingly collect personal information from children.

Data Deletion

You can delete all your data at any time:

• Local data: Uninstall the app or clear app data from your device settings.
• Cloud data: Use the "Delete Cloud Data" option in Flippy's settings, or contact us to request deletion.

Changes to This Policy

We may update this privacy policy from time to time. Changes will be posted on this page with an updated effective date.

Contact Us

If you have questions about this privacy policy or your data, contact us at:

flippypdf@gmail.com