> For the complete documentation index, see [llms.txt](https://documentation.soulver.app/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://documentation.soulver.app/documentation/sheets-and-files/sheetbooks-and-syncing.md).

# Sheetbooks

Soulver saves your sheets into a single library file called a "sheetbook" (with the .sheetbook file extension).

### Syncing a sheetbook between devices

Soulver uses iCloud to keep your sheets up to date across your Mac, iPad, and iPhone. Make sure each device is signed into the same iCloud account so that changes made on one device are synced to the others.

On Mac, iPad, or iPhone, open **Settings > General** and enable **Sync sheets across your devices**.

{% hint style="info" %}
If you don’t see this option, check that Soulver has access to iCloud in your system settings.
{% endhint %}

### **Opening a different sheetbook**

Soulver can only open one sheetbook file at a time, so if you open another sheetbook file, your previously open sheetbook will be closed.

You can open a sheetbook by double-clicking a sheetbook file in Finder, or through the Open dialog.

### Sheetbook Backups

Soulver makes daily backups of your sheetbook, just in case. To restore from a backup, go `File > Backups`, select a backup and click "Restore from Backup".

{% hint style="info" %}
You can manually create a backup from the backups window by clicking "Make Backup Now"
{% endhint %}