SyncCal (Powered by SyncWix) · Wix Bookings Staff Availability Utility

One-Way Google Calendar to Wix Bookings Staff Availability Synchronization

SyncCal connects a staff member’s Google Calendar in strictly read-only mode to their assigned Wix Bookings schedule. When a staff member is busy on Google Calendar, SyncCal blocks that time window on Wix Bookings as a generic "Busy" slot—preventing double-bookings without exposing private event details or overwriting confirmed customer appointments.

Release Status Notice: SyncCal is currently in pre-launch preparation and platform verification for the Wix App Market and Google OAuth review. The application is not yet publicly available for general merchant installation while cloud runtime provisioning and final live production checks are being completed.

How One-Way Synchronization Works

Designed specifically for salons, studios, clinics, and service businesses running Wix Bookings.

Step 1 · Read-Only OAuth

Connect Staff Google Calendar

A merchant or staff member authorizes read-only Google Calendar access (https://www.googleapis.com/auth/calendar.readonly) and maps that connection to a specific Wix Bookings staff resource.

Step 2 · Availability Evaluation

Detect Busy Time Windows

SyncCal evaluates event timing, status (confirmed, tentative, cancelled), transparency (opaque vs. transparent), and whether the connected user declined the event.

Step 3 · Safe Wix Block Updates

Write Generic “Busy” Slots

SyncCal creates, updates, or cancels corresponding DEFAULT blocked-time events titled "Busy" on the assigned Wix Bookings staff schedule after checking for existing customer appointments.

Strictly One-Way & Privacy-Preserving: SyncCal never requests write access to Google Calendar, never modifies or deletes Google Calendar events, and does not write Google Calendar event titles, descriptions, meeting links, or attendee lists to Wix Bookings or Firestore mapping records.

Key Architecture & Safety Features

Built with explicit safeguards for live merchant schedules and staff privacy.

Confirmed Booking Protection

Before creating or moving a blocked-time slot on Wix, SyncCal queries Wix Calendar V3 and Wix Bookings V2 in that time window. If a confirmed customer booking (APPOINTMENT, CLASS, or COURSE) overlaps, SyncCal skips the block and never modifies or cancels customer appointments.

6-Invariant Ownership Ledger

SyncCal tracks every DEFAULT blocked-time event it creates in its Firestore ownership ledger and verifies six invariants (id, scheduleId, externalScheduleId, type === "DEFAULT", createdDate, and revision) before any update or cancellation.

Quarantine Diagnostics

If an upstream API returns an ambiguous response or a Wix event’s ownership invariants no longer match the ledger, SyncCal places that mapping into a QUARANTINED state rather than risking unintended edits to a merchant’s schedule.

Encrypted OAuth Credentials

Google OAuth 2.0 tokens and Wix site tokens are encrypted in application memory prior to Firestore storage using AES-256-GCM with keys derived via HKDF-SHA256 and bound via Additional Authenticated Data (AAD) to the specific tenant, Wix site, and credential ID.

Incremental Sync & Manual Trigger

SyncCal uses Google Calendar incremental sync tokens (nextSyncToken) alongside background polling and an on-demand Sync Now dashboard action, protected by per-connection concurrency locks to prevent overlapping runs.

Clean Disconnect & Uninstall

Disconnecting a calendar attempts best-effort Google token revocation, immediately overwrites stored Google token ciphertexts with null (status: "PURGED"), and optionally cancels future verified SyncCal-owned "Busy" blocks on Wix Bookings.

Subscription Plans

Simple monthly plans billed through Wix App Market Billing once publicly released.

SyncCal Starter
$9 / month (USD)
Wix Vendor Product ID: starter
  • Up to 1 connected staff Google Calendar
  • Automated background sync every 15 minutes
  • On-demand manual Sync Now button
  • Pre-write customer appointment conflict protection (APPOINTMENT, CLASS, COURSE)
  • 6-invariant Wix event ownership verification & safe disconnect cleanup
SyncCal Pro
$19 / month (USD)
Wix Vendor Product ID: pro
  • Up to 10 connected staff Google Calendars
  • Automated background sync every 5 minutes
  • On-demand manual Sync Now button
  • Pre-write customer appointment conflict protection (APPOINTMENT, CLASS, COURSE)
  • Quarantine inspection & safe recovery controls in the merchant dashboard

Google API Services User Data Policy & Support Contact

SyncCal’s use and transfer to any other app of information received from Google APIs adheres to the Google API Services User Data Policy, including the Limited Use requirements. SyncCal does not sell user data to third parties and does not use Google Calendar data to train, fine-tune, or prompt AI or LLM models.

Support & Privacy Contact: seancg2.me@gmail.com  ·  Read the SyncCal Privacy Policy  ·  Read the SyncCal Terms of Service