Unified Calendar
Complete view of all appointments by day, week, or month. Filter by specialist, location, or service type and always have a clear picture of availability. Changes are reflected instantly for all account users.
4appointments solutions · Online Booking
24/7 online booking — unified calendar, self-service and automatic sync
Let clients book anytime, from any device, without phone calls. Your calendar stays current, synced with Google and Outlook, with full support for recurring series.
A good online booking system eliminates calendar chaos and replaces repetitive calls with autonomous reservations. In 4appointments, clients see real-time availability, choose their preferred date and time, and receive instant confirmation — no manual effort from your team. You get complete visibility by day, week, or month, with all appointments centralized in one place.
Four components that fully automate your calendar
Self-service Booking
Clients access your booking link, see available slots in real time, and confirm their reservation in seconds. No calls, no messages, no manually managed waiting lists. The booking page is fully customizable with your business branding.
Google / Outlook Sync
Two-way sync with Google Calendar and Microsoft Outlook. Appointments from 4appointments appear automatically in each specialist's personal calendar — and blocked time in Google is respected automatically, no duplicates.
Recurring Appointments
Set it once — weekly, biweekly, or a custom interval — and the system automatically generates the entire series. Clients receive confirmation for each, with the option to modify a single occurrence or the whole series.
Advantages
- Clients book themselves 24/7 — no phone calls and no need for front-desk coverage.
- Two-way Google and Outlook sync — time blocked in a personal calendar is honored automatically, with no double bookings.
- The booking page is customizable with your logo and brand colors, no code required.
- Recurring appointments generated from a single setup (weekly, biweekly, custom interval).
- Setup takes around 10 minutes, with import of existing data.
Limitations
- Google/Outlook sync has a few-minute latency on the two-way refresh — it is not second-by-second instant.
- Advanced availability logic (complex per-resource rules) requires the higher plan.
- Apple (iCloud) calendar sync is read-only via iCal subscription, not two-way.
- For very high volumes of concurrent slots, we recommend load-testing in advance.
Who it is for
A good fit for any appointment-based business that wants self-service booking and a calendar synced with Google/Outlook. Less suitable if you work exclusively in the Apple ecosystem and need two-way iCloud sync.
Specifications — online booking
| Booking availability | 24/7, self-service, real-time |
|---|---|
| Calendar sync | Google Calendar and Microsoft Outlook (two-way) |
| Calendar views | Day / week / month, filter by specialist, location, service |
| Recurring appointments | Yes — weekly, biweekly or custom interval |
| Booking page customization | Logo, colors, own branding, no code |
| Setup time | ~10 minutes, with existing-data import |
| Devices | Responsive web — desktop, tablet, phone |
4appointments vs. Calendly vs. Acuity
| 4appointments | Calendly | Acuity Scheduling | |
|---|---|---|---|
| Unified multi-specialist calendar | Built in, native | Limited to Teams plans | Yes, but more complex |
| Google + Outlook sync | Two-way, included | Yes | Yes |
| Recurring appointments | Yes, full series | Limited | Yes |
| Romanian-language UI and support | Yes, fully | No | No |
| Integrated ecosystem (CRM, invoicing, HR) | Yes, native | Only via third-party integrations | Only via third-party integrations |
Frequently asked questions about online booking
Can I accept bookings without answering the phone?
Yes. Clients open your booking link, see free slots in real time, and confirm themselves. You get a notification and the appointment appears automatically in your calendar.
Does it sync with Google Calendar and Outlook?
Yes, two-way. Appointments from 4appointments appear in the specialist's personal calendar, and time blocked in Google or Outlook is honored automatically, with no double bookings.
Can I create appointments that repeat automatically?
Yes. You set the interval once (weekly, biweekly, or custom) and the system generates the whole series, with the option to edit a single occurrence or all of them.
How long does setup take?
About 10 minutes. No code is required; you can import existing data and immediately get a booking link ready to share.
Can I customize the booking page with my brand?
Yes. You add your logo and brand colors so the booking page looks like an extension of your own website.
Set up your online calendar in 10 minutes
Simple configuration, no code. Import existing data, booking link ready to share.