Terms of Service for Éist

Last updated: March 15, 2026

Acceptance of Terms

By downloading, installing, or using Éist ("the app"), you agree to these Terms of Service. If you do not agree, please do not use the app.

Description of Service

Éist is an audiobook reader application that:

  • Converts ebook files (EPUB, PDF) to audiobooks using AI text-to-speech
  • Operates primarily offline on your device
  • Does not require account registration
  • Collects anonymous usage analytics and crash reports to improve stability

Analytics & Crash Reporting

Éist uses PostHog for anonymous usage analytics and Sentry for crash reporting. These services collect:

  • Device type, OS version, and app version
  • Anonymous events: app opens, playback actions, book imports, and subscription events
  • Crash stack traces and performance metrics

Your books and personal data are never sent. You can opt out completely in Settings → Privacy, which disables both analytics and crash reporting.

User Responsibilities

Permitted Use

You may use Éist to:

  • Import and convert ebooks you legally own or have rights to access
  • Download and use free public domain books from integrated sources
  • Listen to audiobooks for personal, non-commercial purposes

Prohibited Use

You may NOT use Éist to:

  • Convert or distribute copyrighted content without authorization
  • Circumvent digital rights management (DRM)
  • Use the app for any illegal purpose

Content Ownership

  • Your books: You retain all rights to content you import
  • AI voice models: Voice models are licensed for personal use with Éist only
  • Public domain content: Free books from Project Gutenberg are in the public domain

Intellectual Property

Éist, including its design, code, and AI voice technology, is protected by intellectual property laws. You may not:

  • Copy, modify, or distribute the app
  • Reverse engineer the app or voice models
  • Use our trademarks without permission

Disclaimer of Warranties

THE APP IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. WE DO NOT GUARANTEE:

  • Uninterrupted or error-free operation
  • Accuracy of text-to-speech synthesis
  • Compatibility with all devices or file formats

Limitation of Liability

TO THE MAXIMUM EXTENT PERMITTED BY LAW, WE SHALL NOT BE LIABLE FOR:

  • Any indirect, incidental, or consequential damages
  • Loss of data or content
  • Interruption of service

Changes to Terms

We may modify these terms at any time. Continued use of the app after changes constitutes acceptance of the new terms.

Termination

We reserve the right to terminate your access to the app if you violate these terms.

Governing Law

These terms are governed by the laws of Ireland, without regard to conflict of law principles.

Contact

For questions about these terms, contact us at: support@eist.app

Thank you for using Éist. Enjoy your audiobooks!

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