Acuity Scheduling vs Kalender Sync
Acuity Scheduling and Kalender Sync are both scheduling & calendar tools aimed at freelancers and small businesses. Only Kalender Sync has a free plan.
Acuity Scheduling
Appointment scheduling for service businesses
Kalender Sync
German-hosted calendar sync across providers, with AI assistant access
| Pricing | Paid · $20 | Freemium |
| Starting price | $20/mo | Not published |
| Free plan | No | Yes |
| Free trial | 7 days | 7 days |
| Built for | Freelancers, Small businesses | Freelancers, Small businesses |
| Platforms | web, ios, android | web |
| Country | US · 2006 | DE |
| Rating | — | — |
Choose Acuity Scheduling if
Service businesses booking clients.
- Built for service businesses
- Payments and packages
- Customizable forms
Look elsewhere if: B2B sales scheduling (Calendly).
Choose Kalender Sync if
Freelancers and consultants in Europe who need GDPR-compliant sync across Google, Outlook, iCloud and German mail providers.
- Covers German providers that most sync tools ignore
- Privacy-friendly default shares busy time only
- GDPR DPA included even on the Free plan
Look elsewhere if: Teams wanting AI task scheduling or central admin for many users (Reclaim, Ridian).
Acuity Scheduling vs Kalender Sync pricing
Acuity Scheduling
- Starter$20/mo$16/mo billed annually; 1 calendar
- Standard$34/mo$27/mo billed annually; up to 6 calendars
- Premium$69/mo$55/mo billed annually; up to 36 calendars, HIPAA BAA
Kalender Sync
- Free€02 accounts, 1 sharing, Google and Outlook only, 100 AI credits
- Basic€5/mo3 accounts, 5 syncs, all providers; 2 months free yearly
- Professional€12/moUnlimited accounts and syncs, 18 months ahead, 2,000 credits
Acuity Scheduling · Key features
- Client self-booking
- Intake forms
- Packages, gift certificates, memberships
- Payments and deposits
- Reminders via email and SMS
- Multi-staff and locations
Cons
- Interface dated
- Team features cost more
- Less suited to sales routing
Kalender Sync · Key features
- One-way or two-way sync between calendars at different providers
- Supports Google, Outlook, iCloud, GMX, WEB.DE, mailbox.org and kSuite
- Busy-only, title and time, or full-detail visibility per sync
- Real-time webhooks for Google and Outlook, 5-minute polling for others
- MCP server for Claude, ChatGPT, Cursor, Zapier and n8n
- Per-calendar AI permissions with a logged history of actions
Cons
- Prices listed only in euros
- Free plan cannot sync your own calendars with each other
- Non-Google, non-Outlook providers update about every five minutes
Acuity Scheduling vs Kalender Sync: FAQ
Do Acuity Scheduling and Kalender Sync have a free plan?
Acuity Scheduling has no free plan, a 7-day free trial. Kalender Sync has a free plan.