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A structured, machine-readable invoice per EN 16931. ZUGFeRD is a PDF with embedded data, XRechnung a pure XML file for public authorities. You export either with one tap.
Up to 3 finalised invoices per month with full functionality. Unlimited with Rechnio Pro.
By default only on your device. Optionally via your private iCloud. We store nothing ourselves.
With iCloud sync on it happens by itself. Otherwise write a backup in Settings and restore it on the new device.
Usually a mandatory field is missing, such as the routing ID for public authorities or the VAT ID for reverse charge. Rechnio checks this before export and names the missing field; send us the message if it stays unclear.
Via your App Store settings: Settings → [your name] → Subscriptions → Rechnio Pro → Cancel.