Privacy Policy for Unstack - AI Document Organizer

Last Updated: February 2026

1. Introduction

Welcome to Unstack ("we," "our," or "us"). Unstack is an AI-powered document organizer designed to help you scan, analyze, and manage your personal documents directly on your device. We are committed to protecting your privacy and ensuring your data remains secure.

2. Information We Collect

### A. Data You Provide

- **Document Images**: We process photos of documents you scan or import.

- **Extracted Data**: Our AI extracts text, dates, totals, and categories from your documents.

- **Subscription Information**: We process subscription status (Pro vs. Free) to unlock features.

### B. Automatically Collected Data

- **Usage Data**: We may collect anonymous usage statistics (e.g., number of scans, feature usage) to improve app performance.

- **Device Information**: Model, OS version, and language settings for troubleshooting.

3. How We Use Your Data

- **Service Provision**: To organize your documents, provide search functionality, and generate reminders.

- **AI Analysis**: We use Google Gemini AI to analyze your document content.

- **Notifications**: To send you reminders for upcoming due dates or expirations found in your documents.

4. Data Storage and Security

- **Local-First Storage**: Unstack is designed as a local-first application. Your document images and the database of extracted information are stored strictly on your device's internal storage using secure encryption where possible.

- **AI Processing**: When you analyze a document, the text data is temporarily sent to our AI provider (Google Gemini) for processing. We do not store this data on our external servers, and it is not used to train public AI models.

5. Third-Party Services

We use the following third-party services to operate the app:

- **RevenueCat**: Manages subscriptions and in-app purchases. Data shared: usage entitlements (e.g., "Pro" status).

- **Google Gemini API**: Provides the intelligence for document analysis.

- **Google ML Kit**: Performs on-device text recognition (OCR) before AI processing.

6. Your Rights

- **Access & Deletion**: Since data is stored locally, you have full control. Deleting the app or clearing its data removes all your stored documents and information.

- **Opt-Out**: You can manage subscription settings through your Apple ID settings.

7. Children's Privacy

Unstack is not intended for use by children under the age of 13. We do not knowingly collect personal information from children.

8. Changes to This Policy

We may update this privacy policy from time to time. We will notify you of any changes by posting the new policy on this page or through the app.

9. Contact Us

If you have any questions about this Privacy Policy, please contact us at: mactrixapp@gmail.com