Read offline
Chapters you saved with "Save for offline" can be opened here even without a connection.
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Install like an app
You can add Saving The Gut to your home screen: choose "Add to home screen" or "Install app" in your browser menu. On iPhone, use "Share" in Safari.
Saved chapters stay in your browser only. The server does not learn what you save. You can delete them here or in your browser settings.