Weinzierl IT- & Softwaresolutions

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Manage appointments without two customers getting the same time slot.

The resource calendar for practices, trade businesses, coaches and room renters — with automatic conflict checking, distance-based travel time buffer and direct integration with Rechnungs.BauKastl and Web.BauKastl. GDPR-compliant, hosted in Germany.

Start for just €4.90/month

Sooner or later, Excel spreadsheets and paper calendars lead to double bookings. Off-the-shelf booking tools usually only offer "one calendar per employee" — but what about rooms, guest rooms, or vehicles? And what about travel time between two customer appointments?

Termin.BauKastl thinks in terms of resources rather than people: every resource — whether employee, treatment room, hotel room, or company car — gets its own, filterable calendar. Appointments can be booked by time slot or by day, including automatic conflict and buffer checking that never double-books, even with parallel web bookings.

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Resource Calendar

  • Fixed meeting link per resource (Zoom, Teams, Google Meet)

  • Automatically included in appointment invitation & calendar entry (ICS)

  • Appointment location freely selectable: at the provider, at the customer, or online — can also be combined per time slot

Travel Time Buffer & Travel Fee

  • For "At the customer's" appointments, the actual travel time to the neighboring appointment is calculated — not just a flat buffer

  • Self-hosted map service (OSRM/Nominatim) — no addresses shared with third parties

  • Travel fee automatically calculated based on kilometers driven, added directly as a second invoice item

  • "Find next available appointment" takes the actual route between two customer addresses into account

Online Appointments

  • Fixed meeting link per resource (Zoom, Teams, Google Meet)

  • Automatically included in appointment invitation & calendar entry (ICS)

  • Appointment location freely selectable: at the provider, at the customer, or online — can also be combined per time slot

Rechnungs.BauKastl & Web.BauKastl

  • With one click, directly from the linked RBK modules

  • Consolidated invoice/quote for multiple appointments of a customer at once

  • Online booking block for your own website (with a booked Web.BauKastl) — including optional confirmation link against fake bookings

  • Also works standalone, completely without RBK/WBK

Calendar Synchronization

One-way iCal feed for any calendar provider (including Google/Outlook) for display purposes

True two-way synchronization (CalDAV) for Apple/iCloud and Nextcloud

Conflicts are detected, flagged, and reported by email — never silently overbooked

Employee Access

Individual logins for employees — with access to selected or all calendars

Forced password change on first login

Login credentials & sign-in link can be sent directly from the admin panel by email

Overnight Stay Mode

  • Occupancy calendar instead of time slots — two-click selection of arrival and departure

  • Number of persons & meal options (overnight stay, breakfast, half board, …) per room

  • Automatic room assignment based on availability and capacity

Data Protection & Traceability

  • Self-populating contact book — no duplicate data maintenance

  • Complete audit log of all appointment changes

  • Hosting in Germany, TLS 1.2+, bcrypt for passwords

  • SSO login via Mein.BauKastl — one password for all modules

Medical Practice & Healthcare

Appointment scheduling per treatment room

Self-filling patient contact book

Online appointment booking for the practice website

Tradespeople & Field Service

Real travel time instead of a flat buffer between customer appointments

Travel fee automatically billed by kilometers

"Next available appointment" based on the actual route

Coaching & Consulting

Online appointments with automatic meeting link

Time-slot-based booking for your own website

Direct link to quote/invoice in Rechnungs.BauKastl

Hotel & Accommodation

  • Occupancy calendar instead of rigid time slots

  • Number of guests and meal options per room

  • Automatic room assignment based on availability

€4.90 /month

Standard · all-inclusive

For businesses with one or more bookable resources.

Unlimited resource calendars

Travel time buffer + distance-based travel surcharge

Online booking block (with Web.BauKastl booked)

Appointment → invoice/quote (with Rechnungs.BauKastl booked)

Calendar sync (iCal + CalDAV)

Employee access at no extra cost

Own subdomain {yourname}.termin.baukastl.de

Hosting and backup in Germany

Frequently Asked Questions

Brauche ich Rechnungs.BauKastl oder Web.BauKastl dafür?

Nein. Termin.BauKastl funktioniert komplett eigenständig als Terminverwaltung. Mit gebuchtem Rechnungs.BauKastl können Sie Termine direkt zu Rechnung/Angebot machen, mit gebuchtem Web.BauKastl bekommt Ihre Website einen Online-Buchungs-Block — beides ist optional.

Funktioniert die Fahrzeit-Berechnung auch ohne Adressen an Google zu schicken?

Ja. Die Routenberechnung läuft über einen selbst gehosteten Kartendienst (OSRM/Nominatim, Open-Street-Map-Daten) — Ihre Kundenadressen verlassen zu keinem Zeitpunkt unsere eigene Infrastruktur.

Neue Kann ich meinen Google- oder Outlook-Kalender vollständig zwei-seitig synchronisieren??

Google und Microsoft erlauben Drittanbietern technisch keine echte CalDAV-Zwei-Wege-Anbindung. Termin.BauKastl bietet dafür einen Einweg-iCal-Feed: Ihre TBK-Termine erscheinen zuverlässig in Google/Outlook, umgekehrt sehen Sie externe Termine als Blocker im TBK-Kalender. Für Apple/iCloud und Nextcloud funktioniert die echte Zwei-Wege-Synchronisation.

Wie viele Mitarbeiter-Zugänge sind enthalten?

Beliebig viele, ohne Aufpreis. Jeder Mitarbeiter kann auf ausgewählte oder alle Kalender zugreifen, meldet sich mit eigenem Passwort an und wird beim ersten Login zum Passwort-Wechsel aufgefordert.

Was, wenn ich das System verlasse?

Nach Kündigung: 30 Tage Gnadenfrist zum Datenexport. Danach werden die Daten Ihrer Instanz vollständig gelöscht.

Wo liegen meine Daten?

Rechenzentrum Hetzner in Deutschland (Falkenstein oder Nürnberg), ISO 27001 zertifiziert. Ihre Instanz läuft in einer eigenen Datenbank und einem eigenen Prozess — keine Vermischung mit anderen Mandanten.


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