You can export the products to a CSV file that is compatible with any spreadsheet program such as Excel, Apple Numbers or the free LibreOffice suite.
To export the products:
Tap the Import/Export
Tap Export Inventory or Export Inventory & Images
Choose Sent To Email to send the CSV file to your email as an attachment, Send To Dropbox to upload the CSV file to the default Dropbox documents folder, or Send to Shared Folder to send it to the device shared folder (use iTunes to transfer the file to your computer.)