Sales

Relations

Scheduling

Management

Built for you

Knowledge that works for your business. Help Centre Step-by-step guidance. From setup to automation. API API Webhooks Custom integrations. r/Zencal Join the Zencal community. Ask questions, share ideas and learn from other service businesses.
Product

Sales

Paid appointments Events Bundles Subscriptions

Relations

Clients Reminders Reviews

Scheduling

Smart Booking Calendar sync Booking module

Management

Team scheduling Analytics
Solutions

Built for you

Coaches Dietitians Financial advisors Personal trainers Therapists Lawyers Tax advisors Physiotherapists Real estate agents Psychologists Tutors Career counsellors Accountants Speech therapists Business coaches Consultants Architects Notaries
Learn

Learn with Zencal

Reddit Blog Help Centre API
Pricing Log in

Calendar sync

Keep every calendar perfectly in sync.

Connect Google Calendar, Outlook or iCloud and manage one reliable availability across all of them. Busy times block automatically, new bookings appear in seconds and clients only see slots that are genuinely free.

What is Calendar synchronisation in Zencal?

Calendar synchronisation in Zencal connects Google Calendar, Microsoft Outlook and iCloud calendars to one availability engine. Existing events block time and every confirmed Zencal booking returns to the connected calendar.

Best for
Specialists who work across one or several calendars
Replaces
Copying events and checking conflicts by hand
Core outcome
One reliable view of bookable time

The problem it solves

Separate work and personal calendars can make the same time look free in one place and busy in another. Zencal checks them together before presenting availability to a client.

How Calendar synchronisation works

  1. 01

    Connect your calendars

    Authorize the calendars Zencal should read for conflicts and update with bookings.

  2. 02

    Set availability rules

    Define working hours, buffers, limits and which calendar receives new appointments.

  3. 03

    Keep every calendar current

    Busy periods disappear from booking pages and confirmed appointments sync automatically.

What Zencal handles automatically

  • Two-way booking updates
  • Conflict and buffer checks
  • Time-zone-safe availability

What's next

Your calendars are connected. Clients still need a way in. What comes next?

Zencal also gives clients a self-service booking path built on that real availability.

From availability to booking

Your calendars agree. Now let clients book the right time themselves.

Turn reliable availability into a self-serve booking flow. Clients see genuinely free slots, choose one and receive an immediate confirmation while your calendars stay protected.

  • Only real availability shown
  • No scheduling back-and-forth
  • Every booking confirmed
Explore Smart Booking
Connected growth path Next step
  1. 01
    What works nowCalendars in sync

    Conflicts removed

  2. 02
    Add nextBooking page

    Real slots shown live

  3. 03
    Business resultCalendar fills itself

    Less coordination

Less coordination.
More time for clients.

See how specialists and service teams use Zencal to reduce manual work, deliver a professional buying experience and focus on the people they serve.

Zencal review5.0/5
“For coaches, it’s a great product — much more than a calendar for sessions and appointments.”
—Mira KarpCoach using Zencal
G25.0/5
“Creating the calendar and page is super straightforward. The customer support literally guides you by the hand.”
—Marta J.Growth Marketer
Zencal review5.0/5
“We configured everything once, then the system handled bookings, rescheduling and reminders on its own.”
—Marta HainMDgroup Accounting Office
G24.5/5
“A highly functional tool, on par with the best in the industry. Direct contact and speed are a real plus.”
—M.Enterprise Administrator
Zencal review5.0/5
“Full integration with Fakturownia and Google Calendar, plus complete customization of content and packages.”
—JoannaZencal client for almost 3 years
G25.0/5
“Easy and transparent registration, strong customer service and an open system that supports integrations through API.”
—Grzesiek z F.CEO
G25.0/5
“Clear design, easy access to the most important reports and simple appointment scheduling.”
—Natalia M.Operations Manager
Zencal review5.0/5
“This one tool made my life much easier and saved me many hours.”
—SylwiaZencal client
Zencal review5.0/5
“Communication is clear, transparent and effortless. Zencal support solves every issue as it comes up.”
—KrzysztofZencal client
Zencal review5.0/5
“My technical issue was solved immediately by a real support person.”
—Katarzyna Bawolak-TokarczykZencal client
Zencal review5.0/5
“Very efficient contact and a concrete approach to the problem, without dragging things out.”
—KamilZencal client
4.9/5 average rating
See every Zencal review on G2

Legal, data and technical detailsbefore moving to Zencal.

Review data processing terms, infrastructure location, available integrations and the technical conditions of migration before implementation begins.

01

Do I have to move my entire calendar?

No. Connect your current Google, Outlook or iCloud calendar and keep using it as before. Zencal checks for conflicts and adds new bookings to the connected calendar.

02

Which calendar and payment integrations are supported?

Zencal connects with Google Calendar, Outlook and iCloud. Supported payment providers include Stripe, PayU, Przelewy24, tPay, PayPal and AutoPay. Each connection can be introduced without replacing the rest of your technical setup.

03

How can existing client data be migrated or exported?

Connecting a calendar does not require rebuilding it. Client data can be imported and exported, and our team can help plan a larger migration before making any client-facing changes.

04

Where is the core Zencal infrastructure hosted?

Core cloud infrastructure is hosted in Frankfurt, Germany, within the European Union.

05

How is personal data protected?

Zencal processes entrusted data under a GDPR data processing agreement and applies appropriate technical and organisational safeguards. The intended data scope, retention rules and access model should be confirmed as part of your implementation.

Read the DPA and sub-processor list
06

Is a data processing agreement available?

Yes. An Article 28 data processing agreement forms part of the service terms and documents the roles and responsibilities involved in processing entrusted personal data.

Read the DPA and sub-processor list
07

How are transfers involving non-EEA sub-processors protected?

Where processing involves a sub-processor outside the European Economic Area, safeguards such as Standard Contractual Clauses are used in accordance with the applicable data processing terms.

See the sub-processor list

GDPR

Documented roles and rules for processing entrusted personal data.

Data processing agreement

An Article 28 DPA forms part of the service terms.

EU infrastructure

Core cloud hosting is located in Frankfurt, Germany.

Secure payment providers

Payments run through providers such as Stripe, PayU and Przelewy24.