Privacy Policy

Last Updated: March 2026

Introduction

Welcome to Readmigo ("we," "our," or "us"). This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our mobile application and related services (collectively, the "Service").

Please read this Privacy Policy carefully. By using the Service, you agree to the collection and use of information in accordance with this policy.

Information We Collect

Information You Provide

Information Collected Automatically

AI Interaction Data

When you use our AI-powered features (word explanations, sentence simplification, translations, Q&A), we process:

How We Use Your Information

We use the information we collect to:

Legal Basis for Processing (EEA/UK Users)

If you are located in the European Economic Area (EEA) or the United Kingdom, we process your personal data based on the following legal grounds:

Processing Activity Legal Basis
Account creation and authentication Contract performance
Providing reading, vocabulary, and AI features Contract performance
Syncing reading progress across devices Contract performance
Personalizing book recommendations Legitimate interest (improving user experience)
Usage analytics and service improvement Legitimate interest (product development)
Error monitoring and crash reporting Legitimate interest (service reliability)
Security and fraud prevention Legitimate interest (protecting users and service)
Service updates and customer support Contract performance
Marketing communications (if applicable) Consent (you may withdraw at any time)

Where we rely on legitimate interests, we have assessed that these interests are not overridden by your data protection rights. You have the right to object to processing based on legitimate interests at any time by contacting privacy@readmigo.app.

Data Sharing

We do not sell your personal information. We may share information with:

Third-Party Service Providers

We use the following third-party services to operate and improve Readmigo:

Service Provider Data Processed Server Location Purpose
Database Neon (neon.tech) Account data, reading progress, vocabulary, user content Cloud (US region) Core data storage
Analytics PostHog Usage events, feature interactions, anonymous behavioral data United States Product analytics and improvement
Error Monitoring Sentry Crash logs, device info, app state at time of error United States Bug detection and resolution
Authentication Apple Sign-In Name, email (as authorized by you) United States Account login
Authentication Google Sign-In Name, email (as authorized by you) United States Account login
AI - Word Explanation DeepSeek Selected text (words/sentences from books) China Real-time reading assistance
AI - Content Q&A OpenAI User questions and book context United States Reading comprehension assistance
AI - Fallback Anthropic Selected text, user queries (when primary AI unavailable) United States Backup AI processing

Important Notes About AI Processing

For EU/EEA users: Data transfers to the United States are conducted under the EU-U.S. Data Privacy Framework (DPF) where the provider is certified, or under Standard Contractual Clauses (SCCs) approved by the European Commission. Data transfers to China (DeepSeek) are conducted under Standard Contractual Clauses (SCCs).

Data Storage and Security

Your Rights

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

To exercise these rights, contact us at privacy@readmigo.app.

Children's Privacy

The Service is not intended for children under 13. We do not knowingly collect personal information from children under 13. If you believe we have collected such information, please contact us.

International Data Transfers

Your information may be transferred to and processed in countries outside your country of residence, including the United States and China. We use the following safeguards for international data transfers:

For EEA/UK users: You have the right to request a copy of the safeguards we use for international transfers by contacting privacy@readmigo.app.

Changes to This Policy

We may update this Privacy Policy periodically. We will notify you of any material changes by posting the new policy on this page and updating the "Last Updated" date.

Contact Us

If you have questions about this Privacy Policy, please contact us:

Appendix: Data We Collect

Data Type Purpose Retention
Email Account, communication Until account deletion
Display Name Personalization Until account deletion
Reading Progress Sync across devices Until account deletion
Vocabulary Learning features Until account deletion
Usage Analytics Service improvement 2 years
AI Query Text AI reading assistance Not retained after processing
Device Info Security, compatibility 1 year