Best Appointment Reminder Software

Cal.com is the best fit for teams that want reminders and scheduling in one place. You can send email, text, and WhatsApp reminders, give clients an easy way to change their appointments, and take payment upfront or charge a no-show fee. That makes it a strong option for clinics, agencies, coaches, and other teams that want more control over their appointment process.

We compared Cal.com with nine other appointment reminder software. We looked at:

• Reminder channels: Which ways can you reach clients?

• Custom reminders: Can you customize the message and when it goes out?

• Payments and no-show protection: Can you collect payment upfront or charge cancellation and no-show fees?

The comparison table near the end summarizes how all 10 tools stack up against these criteria and shows which ones offer a free plan.

TL;DR: the 10 best appointment reminder software

1. Cal.com: best for combining scheduling and reminders

2. GReminders: best for adding reminders to Google Calendar or Outlook

3. Apptoto: best for two-way texting with clients

4. Calendly: best for fast setup

5. Acuity Scheduling: best for intake forms and packages

6. Square Appointments: best for in-person businesses that take card payments

7. Setmore: best free option for small teams

8. GoReminders: best for simple appointment-based businesses

9. SimplyBook.me: best for multilingual, multi-provider businesses

10. Weave: best for healthcare practices

What is appointment reminder software?

Appointment reminder software helps you keep clients informed before and after their appointments. After someone books, it can send a confirmation, one or more reminders, and a follow-up after the appointment.

Reminders can go out by SMS, email, WhatsApp, or automated voice call. Some tools also let clients confirm, cancel, or reschedule from the message, with the change reflected on the calendar automatically.

There are two main types of appointment reminder software:

Dedicated reminder tools connect to a calendar or scheduling system you already use and handle the reminders for you.

Scheduling platforms with built-in reminders handle both the booking and the reminders in one place.

If you're happy with your current scheduling system but its reminder features are lacking, a dedicated reminder tool may be all you need. If you want to manage bookings and reminders in one place, a scheduling platform with built-in reminders is a better fit.

What to look for in appointment reminder software

The best option depends on how your business books appointments, communicates with clients, and handles no-shows. 

These are the features worth comparing before you choose:

1. Reminder channels: Email is cheap but easy to miss. SMS tends to get noticed faster, while WhatsApp can be useful for international clients and voice calls for people who don't text. Check which channels are included and which require an upgrade or credits.

2. Message and timing: You should be able to change the reminder message and decide when it goes out. Some entry-level plans limit you to one reminder or a default template.

3. Payments and no-show fees: If missed appointments cost your business money, look for upfront payments, deposits, or card-on-file options. Some tools also let you charge a fee for late cancellations or no-shows.

4. Replies that update the booking: Clients should be able to confirm, cancel, or reschedule from the reminder without calling your staff. The change should also update your calendar automatically.

5. Healthcare compliance: If reminders contain protected health information (PHI), healthcare businesses may need a Business Associate Agreement (BAA) with the software provider. Check which plan includes a BAA and whether there are minimum user requirements.

6. Total cost: Look beyond the subscription price. Check for per-user or per-location fees, message credits, payment fees, and reminder add-ons. For healthcare, compare the price of the plan that includes the required BAA.

7. Integrations: Calendar sync is the starting point. An application programming interface (API) and webhooks matter more when you have custom booking flows, multiple locations, or a customer relationship management (CRM) system that manages your appointments.

The 10 best appointment reminder software

1. Cal.com: best for combining scheduling and reminders

What it is: Cal.com combines appointment scheduling and reminders in one platform. You can send reminders when someone books, cancels, or reschedules, or at a set time before or after an appointment.

Messages can go out by email, text, or WhatsApp. Clients can also cancel or reschedule through links in their reminders, and the changes update the booking automatically. This makes Cal.com a solid choice for teams that want to manage bookings and reminders in one place.

Why it ranks first: Cal.com suits teams that need more than a single reminder before an appointment. You can schedule several messages, choose different channels, and trigger actions when someone books, cancels, or reschedules. Its API and webhooks also support custom integrations, making it useful for businesses that need scheduling to work with their existing systems or customer-facing products.

Key features: 

• Multiple scheduling options: Support one-on-one meetings, round-robin scheduling, collective scheduling, and group bookings with multiple seats.

• Recurring events: Let clients book repeating appointments, such as weekly meetings or regular sessions.

• Flexible reminder timing: Send messages at a set time before or after an appointment, or when someone books, cancels, or reschedules.

• Multiple channels: Combine email, SMS, and WhatsApp in the same reminder sequence.

• Booking links: Include links in reminders that let clients change or cancel their appointments themselves.

• Monthly message credits: Get monthly credits for text and WhatsApp messages, with additional credits available to purchase.

• Email fallback: When message credits run out, reminders can fall back to email so clients can still receive appointment notifications.

• Cal.ai phone calls: Cal.ai can call attendees to confirm appointments, send reminders, or follow up after a missed appointment.

• Automatic translation: Attendee emails and texts can be translated into the recipient’s language, making it easier to communicate with clients across countries.

• Two-way calendar sync: Sync Google Calendar, Outlook, Apple Calendar, and Zoho Calendar to keep your availability and appointments up to date.

• Payments and no-show fees: Accept payments through Stripe or PayPal, or use Stripe to charge no-show and late-cancellation fees.

• HIPAA support: Offers HIPAA-compliant scheduling on Organizations and Enterprise plans for healthcare teams that need to protect patient information, with a Business Associate Agreement (BAA) available.

Pricing: Cal.com offers a free plan for one user, with unlimited event types and calendar connections, email and SMS notifications, and Stripe or PayPal payments. Paid plans start at $16/user/month ($12 with annual billing) and add customizable email and SMS notifications and team scheduling features.

A small business owner’s review of Cal.com

Best for: Teams that want appointment scheduling and reminders in one platform, from small businesses to companies building scheduling into their own products.

Verdict: Cal.com is a good fit for teams that want to manage bookings and reminders in one place. Clients can cancel or reschedule directly from reminder messages, and Cal.com updates the appointment automatically.

Get started with Cal.com’s free plan or request a demo for your team.

2. GReminders: best for adding reminders to Google Calendar or Outlook

What it is: GReminders adds appointment reminders to your existing Google or Microsoft calendar. It sends reminders for appointments on those calendars, so you can keep using the calendars you already rely on. Clients can confirm, reschedule, or cancel by text, and GReminders updates the appointment based on their replies. SMS credits cost extra, and HIPAA compliance with a signed BAA requires a higher-priced plan.

Key features:

• Flexible scheduling: Supports one-on-one and group appointments, round-robin scheduling, and collective scheduling.

• Calendar integrations: Send reminders for appointments in Google Calendar, Outlook, Microsoft 365, and Exchange. 

• SMS, email, and voice: Send reminders by text, email, or automated phone call, with timing set in minutes, hours, or days before an appointment. 

• Text replies: Let clients confirm, reschedule, or cancel by replying to a reminder. GReminders can update the appointment based on their response. 

• Dedicated number: Use your own local number for reminder texts instead of a shared number.

Limitations:

• Each plan limits the number of email reminders and SMS or phone reminders you can send.

• Unlimited event types and recurring event types are only available on the highest individual plan.

• Its scheduling features are more limited than those of a dedicated scheduling platform.

Pricing: GReminders offers a free Basic plan with one calendar, one event type, and 100 monthly email reminders. Standard costs $10/month for one user, five calendars, 10 event types, and 320 email reminders. Professional costs $47/month for one user, 10 calendars, unlimited event types, 640 email reminders, and 320 SMS or phone reminder credits. Additional users cost $10/month on Standard and $18/month on Professional.

Best for: Financial advisors, accountants, attorneys, therapists, and other professionals who already run their schedules through Google Calendar or Outlook.

Verdict (vs. Cal.com): Choose GReminders if you want to keep using your existing calendar and automate appointment reminders by text, email, or phone. Cal.com offers the same reminder channels alongside more flexible booking tools, making it a stronger fit for teams that need round-robin scheduling, meetings with multiple hosts, group bookings, and recurring appointments.

3. Apptoto: best for two-way texting with clients

What it is: Apptoto connects to your existing calendar and sends appointment reminders by text, email, or phone. Clients can reply to reminders to confirm appointments, cancel, or request changes without paying for incoming messages. However, each automated message Apptoto sends, including appointment confirmations, uses one credit. Pricing depends on the number of calendars, users, and messages you need.

Key features:

• Text, email, and voice reminders: Send SMS messages up to 300 characters, voice calls up to two minutes, or email reminders. 

• Free incoming replies: Clients can confirm, cancel, or request rescheduling without using your message credits. Automated messages Apptoto sends still use credits. 

• Calendar and CRM integrations: Sync appointments with Google, Outlook, Office 365, iCloud, CalDAV, Clio, and Redtail. 

• Follow-ups and campaigns: Send automatic messages after appointments or contact past clients to encourage repeat bookings. 

• Review requests: Automatically ask clients to leave reviews after appointments through an optional reputation management add-on.

Limitations:

• A small practice that needs a BAA must pay for a plan with a minimum of 16 users.

• Apptoto’s reputation management feature costs an extra $39/month.

• Lacks advanced team scheduling features like collective scheduling and routing forms.

Pricing: Apptoto has no free plan but offers a 14-day trial. Paid plans start at $39/month for three users and calendars, unlimited booking pages, and 450 automated message credits.

Best for: Law firms, tax practices, auto shops, and multi-provider clinics that need two-way client communication and already have a calendar they want to keep.

Verdict (vs. Cal.com): Apptoto is a good fit if you want clients to confirm, cancel, or discuss appointments by text. Cal.com also supports reminders and lets clients book, reschedule, or cancel appointments through booking links, with more options for team scheduling and custom reminder workflows.

4. Calendly: best for fast setup

What it is: Calendly is quick to set up and lets you automate confirmations, reminders, and follow-ups for different types of meetings. You can customize messages and set when they go out for each event type, so a sales call and a client consultation can follow different reminder schedules. Clients can book through your Calendly page, and the platform handles the reminders without you having to send each message manually. However, automated reminder workflows aren't available on the free plan.

Key features:

• Automated reminders and follow-ups: Send confirmation emails, reminders, attendance checks, and follow-up messages before or after meetings.

• Conflict checks: Connect multiple calendars so Calendly can check your availability and avoid double bookings.

• Integrations: Connect Calendly to tools like HubSpot, PayPal, and Stripe to manage customer records and collect payments.

• Round robin scheduling: Distribute bookings among team members based on availability or priority.

• SMS reminders: Let invitees provide their phone number to receive text reminders, helping them keep upcoming meetings in mind.

Limitations:

• The free plan doesn't include automated reminders.

• Non-Enterprise plans are limited to 250 SMS credits per seat per month.

• SMS credits can't be purchased separately.

Pricing: Calendly's free plan includes one event type, one calendar connection, and no automated reminders. Paid plans start at $12/seat/month, and include unlimited event types, multiple calendar connections, automated reminders, and 250 monthly SMS credits per seat.

Best for: Consultants, recruiters, and sales reps who need professional booking pages and a simple way to send meeting confirmations and reminders.

Verdict (vs. Cal.com): Calendly and Cal.com support automated email and SMS reminders. Cal.com also supports WhatsApp and offers more flexibility for customizing reminder triggers, collecting booking payments, routing appointments, and connecting scheduling to other tools through its API and webhooks.

5. Acuity Scheduling: best for intake forms and packages

What it is: Acuity combines appointment booking with tools for managing client details, payments, and repeat bookings. You can collect information through intake forms, sell packages and memberships, accept payments upfront, and send appointment reminders from the same platform. Clients can book their own appointments, while you manage their bookings and services in one place.

Key features:

• Intake forms: Collect client details and get clients to agree to terms and cancellation policies when booking. 

• Email reminders on every plan: Customize appointment confirmations, reminders, updates, and follow-up emails 

• SMS reminders: Send automated text reminders before appointments to help reduce no-shows. 

• Packages and memberships: Sell bundles of appointments, recurring subscriptions, and gift certificates clients can redeem when booking. 

• Payments and deposits: Accept full payments or deposits through Stripe, Square, PayPal, or Venmo. 

Limitations:

• SMS reminders and selling memberships and packages aren't available on the entry plan.

• Clients can't reply directly to SMS reminders.

• HIPAA compliance requires the highest paid plan.

Pricing: Acuity has no free plan but offers a 7-day free trial. Starter costs $20/month for one calendar, custom client forms, email reminders, and payments. Standard costs $34/month and adds text reminders, packages, memberships, and up to six calendars. Premium costs $69/month and supports up to 36 calendars, HIPAA compliance, and a signed BAA.

Best for: Coaches, therapists, photographers, wellness providers, and other service businesses that need intake forms and sell packages or memberships.

Verdict (vs. Cal.com): Acuity combines scheduling with client intake forms, packages, memberships, and payments, making it useful for businesses that sell recurring service packages. Cal.com also supports payments and automated reminders, but adds WhatsApp messaging, more reminder triggers, and the ability to combine different channels in one workflow.

6. Square Appointments: best for in-person businesses that take card payments

What it is: Square Appointments combines booking, payment processing, and customer records for businesses that sell services in person or online. It sends text and email reminders, and customers can use Square Assistant to confirm, reschedule, or cancel by text without contacting your staff. You can also collect payment details when clients book and charge no-show or late-cancellation fees, helping you manage appointments and payments in one place.

Key features:

• Automatic reminders: Send text and email reminders before appointments, with customizable timing and messages.

• Square Assistant: Let clients confirm, reschedule, or cancel by text, with changes reflected automatically in your calendar.

• No-show protection: Require a card at booking and charge eligible late-cancellation or no-show fees under your stated policy.

• Deposits: Collect part of the appointment cost upfront to help reduce last-minute cancellations.

• Google Calendar sync: Sync appointments and block busy periods to help prevent double bookings.

Limitations:

• Costs rise as you add locations, since paid subscriptions are charged per location.

• You're limited to using Square to process appointment payments and no-show fees.

• Lacks round-robin scheduling, collective scheduling, and routing forms to direct clients to the right team member.

Pricing: Square has a free plan for one location, unlimited connected calendars, and custom email reminders. Paid plans start at $49/location/month and add no-show fees, waitlists, multi-staff booking, and text reminders.

Best for: Salons, barbershops, spas, tattoo studios, and other in-person businesses already using Square for payments.

Verdict (vs. Cal.com): Square suits service businesses that already use its payment processing and need bookings, reminders, and checkout in one place. Cal.com is a better fit for remote teams that need round robin bookings, collective scheduling, routing forms, and payment options through Stripe or PayPal.

7. Setmore: best free option for small teams

What it is: Setmore lets businesses manage appointments through an online booking page, with a free plan that supports up to four users. You can accept unlimited appointments and payments, and send email reminders without paying for a subscription. Paid plans add SMS reminders, two-way calendar sync, and other scheduling options. You can customize text reminders and choose when clients receive them, giving you more control over appointment notifications.

Key features:

• Free booking page: Let clients book appointments online, with support for up to four users, unlimited appointments, and email reminders. 

• SMS reminders: Send automated text reminders before appointments to help reduce no-shows.

• Calendar sync: Sync appointments with Google Calendar or Outlook in one or both directions to keep schedules aligned.

• Online payments: Accept payments through integrations such as Square, Stripe, PayPal, and LawPay, without Setmore taking a cut.

• Team scheduling: Give each staff member their own profile, calendar, availability, and booking page so clients can book with the right person.

Limitations:

• The free plan has no text reminders and no two-way calendar sync.

• Lacks advanced scheduling features like routing forms, collective, and round robin scheduling.

Pricing: Setmore has a free plan that covers up to four users, unlimited appointments, payments, and email reminders. The Pro plan costs $12/user/month and adds SMS reminders, recurring appointments, and removes Setmore branding.

Best for: Small teams and solo professionals who want free online booking, basic reminders, and payment processing without a complex setup.

Verdict (vs. Cal.com): Setmore suits businesses that need online booking, basic reminders, and payment processing in one place. Cal.com offers more control over reminder timing and triggers, supports WhatsApp alongside email and SMS, and lets you automate messages when appointments change.

8. GoReminders: best for simple appointment-based businesses

What it is: GoReminders helps small service businesses schedule appointments, keep track of clients, and send automatic text and email reminders to reduce no-shows. It keeps booking and reminder management simple, without the extra tools found in larger scheduling platforms. You can start with a limited number of appointments each month and expand as you take on more clients or staff.

Key features:

• Customizable reminders: Send automatic text and email reminders with personalized messages and timing.

• Client replies: Let clients confirm appointments by text or email and respond to questions or change requests.

• Staff and calendar management: Manage appointments across staff and calendars, with Google Calendar and Outlook sync.

• Online booking: Let clients book available slots directly or submit appointment requests for your approval.

• Payments and deposits: Collect appointment payments or deposits through Stripe, and send payment requests to clients.

Limitations:

• Online booking, two-way messaging, and review management are paid add-ons.

• No HIPAA compliance or Business Associate Agreement (BAA) support.

• Higher plans are capped at three reminders per appointment, while entry plans allow only one.

Pricing: GoReminders has no free plan but offers a 14-day free trial. It offers separate solo and team plans. Solo plans start at $9/month for one provider, unlimited appointments, text and email reminders, and one reminder per appointment. Team plans start at $9/month for unlimited providers and 25 monthly appointments, with pricing that scales based on appointment volume.

Best for: Salons, pet groomers, repair businesses, tutors, and other small service businesses that want simple scheduling and automated reminders to reduce no-shows.

Verdict (vs. Cal.com): Choose GoReminders if you mainly need to manage appointments and send reminders. Cal.com is better suited to businesses that need custom scheduling workflows, API integrations, or more control over how bookings are assigned.

9. SimplyBook.me: best for multilingual, multi-provider businesses

What it is: SimplyBook.me helps service businesses manage bookings for multiple providers and locations, including customers who speak different languages. You can offer a multilingual booking site, accept payments and deposits, sell memberships, and send appointment reminders. Pricing depends on your booking volume, number of providers, and the additional tools you choose, while SMS and WhatsApp reminders may incur extra credit costs.

Key features:

• Multiple providers: Let clients choose from different providers and their available appointment times, with support for up to 30 providers on Premium plan.

• Multilingual booking site: Offer a booking page in over 20 built-in languages, including French, Spanish, Arabic, and Japanese.

• Email notifications: Send automatic booking confirmations, reminders, cancellation notices, and rescheduling updates.

• SMS and WhatsApp reminders: Send appointment updates through text or WhatsApp using separately purchased credits.

• Payments and deposits: Accept online payments and deposits, and collect tips through supported payment features.

Limitations:

• All plans cap bookings; extra packs cost $4 per 100 bookings.

• SMS and WhatsApp cost $8 per 100 credits, with no free credits included in paid plans.

Pricing: SimplyBook.me's free plan covers one provider and 50 bookings a month. Paid plans start at $13.90/month for five providers, 100 bookings, and automatic email reminders. You’ll have to pay for SMS and WhatsApp reminders separately.

Best for: Multi-provider studios and international service businesses that serve customers in different languages.

Verdict (vs. Cal.com): SimplyBook.me suits service businesses that need multilingual booking pages. Cal.com is better for teams that want to customize reminder timing and messages, automate follow-ups, and connect reminders to cancellation and rescheduling workflows.

10. Weave: best for healthcare practices

What it is: Weave is an all-in-one patient communication platform built for healthcare practices. It combines phone calls, two-way texting, appointment reminders, online scheduling, and payments in one place. It also connects with existing practice management software, allowing staff to coordinate patient communications with their appointment schedules. This makes it a good fit for practices that want to automate reminders and manage patient interactions without juggling separate communication tools.

Key features:

• Practice management integrations: Sync with your existing practice management software to coordinate reminders with your appointment schedule.

• Two-way texting: Send texts from your practice's phone number and let patients reply with questions, appointment updates, or requests to reschedule.

• Appointment reminders and confirmations: Automatically remind patients about upcoming visits by text, phone, or email and track their responses.

• Recall and reactivation: Identify patients who haven't booked their next visit and send personalized texts or emails to encourage them to book again.

• Text to Pay: Send payment requests directly to patients by text so they can pay their bills remotely without calling the practice or paying in person.

Limitations:

• Adding appointment reminders brings the starting cost to about $348/month, which may be expensive for smaller practices.

• It’s primarily built for healthcare practices, making it less suitable for businesses in other industries.

Pricing: Weave offers no free plan or trial. The base plan starts at $199/month, and the Coordinate bundle that adds online booking, appointment confirmations, and reminders is another $149/month. 

Best for: Dental, optometry, veterinary, and small medical practices that want to bring patient calls, texts, reminders, and follow-ups together in one platform.

Verdict (vs. Cal.com): Weave is built for healthcare practices that want to manage patient calls, texts, reminders, and payments in one platform. Cal.com costs less and is better suited to businesses that need flexible appointment scheduling and reminders without Weave's healthcare-specific tools.

Appointment reminder software: quick comparison table

Here’s how the 10 appointment reminder software stack up on key features and free plans:

Final verdict

Think about how you handle appointments today. Do you need reminders built into your booking system, two-way texting, or a simple way to notify clients before they arrive?

Cal.com is the best fit if you want reminders connected directly to your individual and team scheduling workflows. It supports email, SMS, and WhatsApp reminders, with options to automate messages around booking changes and connect scheduling to other tools through its API, webhooks, and Zapier integration.

If you already use Google Calendar or Outlook, look at GReminders or Apptoto. Calendly and Acuity Scheduling pair booking with reminders, while Square Appointments and Setmore cover everyday scheduling needs for service businesses. GoReminders and SimplyBook.me are alternatives for simpler appointment workflows, and SimplyBook.me supports multiple languages. Weave is worth considering if your healthcare practice also needs patient communication and practice management features.

Get started with Cal.com’s free plan or request a demo for your team.

Frequently asked questions

1. Is there free appointment reminder software? Yes. Cal.com’s free plan supports one user and includes email and SMS notifications, unlimited event types, and calendar connections. Other free options include Setmore, which supports up to four users and unlimited appointments with email reminders; GReminders, which includes 100 email reminders per month; and SimplyBook.me, which covers 50 bookings per month. Square Appointments also has a free plan for one location, but text reminders require a paid plan.

2. How much does appointment reminder software cost? Prices vary by provider, team size, and message volume. GoReminders starts at $9/month, GReminders at $10/month, Acuity Scheduling at $20/month, and Apptoto at $39/month. Cal.com starts at $16/user/month, or $12 with annual billing. Healthcare practices considering Weave should budget $199/month for the base plan, plus $149/month for online booking and reminders.

3. How much does Cal.com cost for text reminders? Cal.com’s free plan includes basic email and SMS notifications, while paid plans start at $16/user/month ($12 with annual billing) and add customizable email and SMS notifications and team scheduling. Text and WhatsApp messages use monthly credits, including texts to US and Canadian numbers. You can purchase additional credits when needed.

4. What is the best appointment reminder software for small business? Cal.com is a good fit if you want to combine scheduling with customizable reminders and booking-change workflows. Setmore suits small teams that need free online booking and email reminders. Square Appointments is worth considering if you run an in-person business that uses Square for payments, while GoReminders offers a simpler option for appointment-based businesses.

5. Can clients reschedule appointments through reminder messages? Yes, if your software supports it. Cal.com lets clients cancel or reschedule through links in reminder messages, while tools like GReminders and Apptoto let clients request changes by text. This saves your team from handling every change manually.