Your calendar already knows what matters.
Calendar Force makes sure people show up.
Schedule SMS reminders directly from Google Calendar using reusable templates, automated delivery queues, and full reminder visibility. Stop manual follow-ups.
Installed in minutes. Works with your existing calendar immediately.
Calendar Force
Extension Panel
Dental Cleaning - Dr. Martinez
Tomorrow at 10:30
SMS Delivered
2 minutes ago
How it works
Three simple steps to automated SMS reminders. No technical setup required.
Connect your calendar
Install the extension and sync events instantly. One-click authorization with your Google account.
Attach reminder templates
Choose reusable offsets like 1 day before, 2 hours before, or 15 minutes before. Define once, apply everywhere.
Send automatically
Calendar Force queues and delivers SMS reminders exactly on schedule. Full delivery visibility included.
Product architecture
Three integrated surfaces for complete reminder management.
Extension Panel
Google Calendar native
Landscaping Service
Today, 09:00
HVAC Maintenance
Tomorrow, 14:00
Web Dashboard
Manage all reminders
24
Scheduled
156
Sent
3
Failed
Delivery Logs
Full audit trail
Roof Inspection
Orthodontist Appt
Pool Cleaning
Built for real operations
Not manual follow-up chaos. Infrastructure-grade reliability for businesses that depend on attendance.
Delivery Pipeline
Scheduled queue processing
Enterprise-grade job scheduler ensures reminders fire precisely when configured.
Delivery retries
Automatic retry logic with exponential backoff for failed deliveries.
Reminder status tracking
Real-time visibility into pending, sent, and failed reminder states.
Observability-ready logs
Structured logs ready for your monitoring and alerting infrastructure.
Billing-safe ownership
Clear event ownership model prevents duplicate charges and confusion.
Event-level metadata
Complete delivery metadata attached to every event for audit trails.
Reusable reminder templates
Define reminder logic once and apply it across all your events. No more manual scheduling for every appointment.
Flexible time offsets
Configure any combination: 1 day, 2 hours, 30 minutes before the event.
Template reuse
Apply the same template to multiple events with one click.
Missing phone detection
Automatic warnings when events lack phone numbers for SMS delivery.
Template Configuration
Reminder: Your meeting "Q1 Review" starts tomorrow at 14:00. Reply STOP to unsubscribe.
Missing phone number
2 events in this batch have no phone number attached.
Built for professionals who need reliability
From healthcare to field services, Calendar Force helps teams reduce no-shows and save time.
Medical clinics
Reduce no-shows with automated appointment reminders. Patients receive timely SMS notifications before their scheduled visits.
Consultants
Never chase clients for meeting confirmations again. Automated reminders keep your calendar running smoothly.
Field teams
Coordinate site visits and service appointments across distributed teams with reliable delivery.
Service businesses
Handle high appointment volumes without manual follow-up. Scale your operations with automated reminders.
Buy credits, send reminders
No subscriptions. Credits never expire. Track your balance and usage in real-time.
Your credit balance
Starter
Perfect for testing or low volume
50 credits
$0.20/credit
- 50 reminder credits
- Never expires
- All templates included
- Full delivery logs
- Email support
Standard
For small practices and solo businesses
200 credits
$0.125/credit
- 200 reminder credits
- Never expires
- All templates included
- Full delivery logs
- Priority support
Pro
Best value for growing businesses
500 credits
$0.10/credit
- 500 reminder credits
- Never expires
- All templates included
- Full delivery logs
- Priority support
- Team collaboration
Business
For high-volume operations
1,000 credits
$0.08/credit
- 1,000 reminder credits
- Never expires
- All templates included
- Full delivery logs
- Dedicated support
- Team collaboration
- API access
Frequently asked questions
Everything you need to know about Calendar Force.
Your calendar already contains the schedule.
Add the reliability layer.
Stop chasing people manually. Let Calendar Force handle automated reminders while you focus on what matters most.