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SPECIFICTION
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Prologue

prologue.audio

Free plan macOSiOS
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Spec score 7.6 #25 of 32 in Audiobook Apps

What it is

Prologue is a self-hosted audiobook player for Plex and Audiobookshelf libraries. It can connect to either service or both, with offline downloads, collections, series, bookmarks, a reading list, statistics, and playback history. Playback controls include per-book settings, sleep timers, smart rewind after pauses, Voice Boost, and an equalizer. The maker lists iPhone, iPad, Apple Watch, Siri, widgets, and CarPlay support, with macOS also listed as a platform. Apple Watch can stream books being read or on the reading list, download books for offline listening, and use widgets and complications. Prologue says library data remains on your devices and that it does not store or handle Plex or Audiobookshelf passwords; access tokens are stored on-device. It collects pseudonymous usage and Apple Ads attribution data, and uses Sentry for crash reports that may include device and operating-system details. The App Store listing requires iOS 26.5 or later and lists iPad, Mac with Apple M1 or later, Apple Vision, and Apple Watch compatibility.

Spec sheet

Product
Prologue is a self-hosted audiobook player for Plex and Audiobookshelf.Read 9 Oct 2026 · prologue.audio
Integrations
The app lists Plex and Audiobookshelf as supported library servers.Read 9 Oct 2026 · prologue.audio
Privacy
Prologue says library data is stored on users’ devices and it does not store library data on its servers.Read 9 Oct 2026 · prologue.audio
Support
The maker directs users to report issues or get in touch from its release page.Read 9 Oct 2026 · prologue.audio
Analytics
Prologue says it collects pseudonymous usage data and Apple Ads attribution information, but not Plex or Audiobookshelf credentials.Read 9 Oct 2026 · prologue.audio
Apple features
The maker lists iPhone, iPad, and Apple Watch support, plus Siri, widgets, and CarPlay.Read 9 Oct 2026 · prologue.audio
Crash reporting
The app uses Sentry for crash reporting, which may include device and operating-system information, app version, and a Sentry installation ID.Read 9 Oct 2026 · prologue.audio
Credentials
The maker says it does not store or handle Plex or Audiobookshelf passwords; access tokens are stored on-device.Read 9 Oct 2026 · prologue.audio
Library features
It connects to Plex, Audiobookshelf, or both, and includes offline downloads, collections, series, bookmarks, a reading list, stats, and playback history.Read 9 Oct 2026 · prologue.audio
Platform requirement
The App Store listing says the app requires iOS 26.5 or later and lists iPad, Mac with Apple M1 or later, Apple Vision, and Apple Watch compatibility.Read 9 Oct 2026 · apps.apple.com
Playback features
Playback options include per-book settings, sleep timers, smart rewind after pauses, Voice Boost, and an equalizer.Read 9 Oct 2026 · prologue.audio
Watch playback
The Apple Watch app can stream books being read or in the reading list, download books for offline listening, and use widgets and complications.Read 9 Oct 2026 · prologue.audio

Plans and prices

Free Free App listed as free; in-app purchases available Read 9 Oct 2026 · apps.apple.com
Prologue for Apple Watch $4.99, paid once In-app purchase Read 9 Oct 2026 · apps.apple.com
Premium (Family Upgrade) $7.99, paid once In-app purchase; billing period not stated Read 9 Oct 2026 · apps.apple.com
Premium $9.99, paid once In-app purchase; billing period not stated Read 9 Oct 2026 · apps.apple.com
Premium (Family) $17.99, paid once In-app purchase; billing period not stated Read 9 Oct 2026 · apps.apple.com

Every Prologue plan and price →

Strong points and limits

Strong points

  • Supports Plex and Audiobookshelf
  • Offline downloads and playback
  • Apple Watch streaming and downloads
  • Playback timers and equalizer
  • Library data stored on-device

Limits

  • Requires iOS 26.5 or later
  • Mobile platform listing is iOS only
  • Crash reports may include device information
  • Premium features are in-app purchases

Who it suits

Prologue suits listeners maintaining Plex or Audiobookshelf libraries who use Apple devices and want offline playback or Apple Watch access. It is also relevant to users checking how library data and credentials are handled.

Verdict

Prologue combines self-hosted Plex and Audiobookshelf access with detailed audiobook organization and playback controls. Apple platform coverage is broad, but the stated iOS requirement and separate in-app purchase options should be checked before use.

Where Specifiction places it

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