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All data is stored locally on your device (SwiftData). Only if you turn on syncing under Settings → iCloud Sync is it also synced via Apple CloudKit with your own iCloud account; it is off by default. There is no HotelDesk server and no account with us. Invoice data is only transmitted to fiskaly when signing (TSE/RKSV) is enabled, without guest data.

Yes, the core features work without an internet connection. HotelDesk only needs a connection for iCloud Sync (when turned on), for invoice signing (TSE/RKSV, when enabled), for calendar feeds from booking portals you have entered and for sending email.

HotelDesk runs on any iPhone and iPad with iOS 17 or later and on Macs with Apple silicon. The interface adapts automatically: compact tab navigation on iPhone, a two-column layout with sidebar on iPad and Mac.

Yes. Turn on “Use iCloud Sync” under Settings → iCloud Sync on each device – first on the device that holds your data – and restart the app. Existing data is merged, so reset any other device that already has data of its own first, with sync turned off. If several devices issue invoices, turn on multi-device mode with its own numbering series on each of them.

Yes. In multi-user mode an administrator creates profiles under Settings → Staff members, each with a role (administrator, manager, front desk, housekeeping, accounting) and a password; every role only sees its own areas. If you work alone, choose single-user mode without login. If the administrator forgets the password, “Forgot password?” with the recovery code helps.

Yes. Enter the portal's iCal address for the room. HotelDesk imports the bookings as blocks in the room plan so that no double booking occurs.

You choose your preferred language the first time you launch the app. After that, you can change the language at any time under More → Settings → Language. German, English, Spanish, French, Italian, Portuguese and Turkish are available.

Open a reservation and tap Check-out. HotelDesk automatically calculates the total based on the number of nights and the room rate. You can save the invoice as a PDF or send it directly by email.

Yes. Once an invoice is locked, it can no longer be modified retroactively — to make a correction, you instead create a correction invoice that references the original invoice number without altering the original. Under More → Settings → GoBD Audit Package, a single tap exports a combined invoice PDF, a DATEV-compatible CSV file, and a SHA-256 checksum for integrity verification — handy for your accountant or a tax audit. The corresponding process documentation can be viewed and printed directly in the app under Settings → Process Documentation.

Yes. Simply paste the text of a booking confirmation, e.g. from Booking.com or similar platforms, into HotelDesk — the reservation details (guest, dates, room, price) are automatically recognized and created as a new reservation, with no manual entry required.

Yes. Under More → Settings, you can set the hotel name, star rating, address, check-in and check-out times, and currency. This information appears on the generated invoices.

Under More → Settings → Backup, HotelDesk offers its own backup and restore feature: it lets you export all data as a file (optionally AES-256 encrypted with your own password) and restore it whenever needed — even on a different device. We also continue to recommend Apple's regular iCloud device backup (Settings → Your Name → iCloud → iCloud Backup) for a complete device backup.

Yes. You can use HotelDesk for 14 days after the first launch without buying anything. After that you choose a subscription (€9.99 per month or €99 per year); it renews automatically and can be cancelled at any time in your App Store settings.

Just send us an email at heinrich.beutler@googlemail.com — we appreciate every bit of feedback and will get back to you as quickly as possible.