As of Infuse 6, libraries and other info can be synced via iCloud and Trakt.

iCloud Sync

Requirements

• Logged into the same Apple ID on all devices*
• iCloud Drive enabled on all devices (details here)
• iCloud Sync enabled in Infuse > Settings

* Note: It's possible to login using separate IDs for iCloud and the App Store. To use iCloud Sync you will need to use the same ID for iCloud on all devices. The App Store IDs can be different, if needed.

What is synced (free + Pro)

• Saved networks shares (address, username, password, etc...)
• Saved Favorites
• Direct URLs added via ‘Add Files’ on iOS

What is synced (Pro only)

• Up Next list (in-progress and recently added items)
• Saved homescreen Lists
• Textual metadata
• Artwork (coming soon)
• Manual metadata corrections (corrections for mismatched titles)
• File specific playback settings (selected audio/subtitle track, zoom setting, etc...)
• General settings (iOS device backups only)
• Watched history 
• Playback position for in-progress items
• Downloaded subtitles
• Playlists
• Ratings

Trakt Sync

Requirements

• A free Trakt.tv account (sign up here)
• Logged into Trakt on all devices (login via Infuse > Settings)
• Scrobbling enabled

What is synced (free + Pro)

• Watched history 
• Playback position for in-progress items
• Ratings and comments

Note: Sending data to your Trakt account (scrobbling) is available for both free + Pro, but syncing data from your account to other devices (2-way sync) is only available in Infuse Pro.

Remove iCloud Data (iOS Only)

Follow the steps below to remove the data synced to iCloud.

1. On iOS, navigate to Settings > [your name] > iCloud > Manage Storage
2. Scroll down and locate the entry for Infuse
3. Tap it to reveal the option to Delete Data