Install and update
Choose your system, architecture and release channel.
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Choose an official package
The download page detects your device and also lets you choose manually. Check Apple Silicon or Intel on macOS and the architecture on Windows and Linux. Android commonly uses arm64; consult your device specifications if unsure.
iPhone and iPad
Use the App Store link on the download page. A test channel, when offered, is separate from the stable release. Use only the links currently listed. The file picker accesses the book files you choose.
Keep your data during updates
Create a recoverable backup, then update your existing installation. Uninstalling or clearing app data is not a normal update step. If installation fails, report your system version, package name and error through Feedback.
Check version and integrity
Releases lists versions, channels and SHA-256 hashes. If a file is damaged, download it again and compare its hash with that exact package. Website download counts measure requests, not completed installations.
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