On iPhone and iPad
Genesis 1 is included. In the updated iPhone and iPad app, open Reading settings, select Mac Character Voices, and tap Download complete audio. The one-time download is about 4.95 GB and needs an internet connection and enough free storage. Once all 1,189 chapters are available offline, the same prerecorded character voices play across all 66 books without internet.
You can cancel a download and resume later; completed chapters stay saved. If you delete the iPhone or iPad app, download or import the audio again after reinstalling. The offline chapter count shows what is ready to play. Earlier builds and users with a separate voice pack can still use Import Audio Library folder from Files. A pack stored only in iCloud must finish downloading before import; allow storage for both the source pack and the installed library.
On Mac
Use the audio library supplied for your Mac build and its supported installation flow. Keep the app and library together as directed by the release instructions; moving or renaming individual audio files can make chapters unavailable.
After installation
Play a short passage before relying on offline listening. Downloaded or imported recordings play from your device, without a remote audio-generation API. Keep a copy of an imported source pack if you may need to reinstall it later.
If a download or import fails
For a download, check your connection and free storage, then use Retry or Resume; completed chapters stay saved. For a Files import, confirm the pack is fully available on the device and intended for your app version. Keep the original source pack and contact support with the error message. Avoid changing files inside the pack.