Same price. Same Google Calendar sync. But Remindly reaches clients on WhatsApp — where open rates are 98% and replies come in seconds, not hours.
Why WhatsApp beats SMS for reminders
Remindly vs Appointment Reminder — side by side
WhatsApp reminders (automated)
SMS reminders
Voice call reminders
Email reminders
Confirm / Cancel / Reschedule
Google Calendar integration
Calendly integration
Acuity Scheduling integration
Square Appointments integration
Free plan
Starting price
Online booking page
Reschedule flow (client picks new time)
Multi-language reminders
Appointment Reminder sends via SMS, email, and voice — but has no WhatsApp. In most of the world, clients check WhatsApp 23 times a day on average. SMS gets read once — if at all. Remindly sends reminders where clients actually respond.
Appointment Reminder lets clients confirm or cancel. Remindly goes further — when a client wants to reschedule, they reply with their preferred time and get a booking link automatically. No manual calls, no back-and-forth messages for you.
Remindly connects natively to Google Calendar, Calendly, Acuity Scheduling, and Square Appointments. Appointment Reminder covers Google Calendar and Office 365 — but misses Calendly and Acuity, which are the most popular scheduling tools for coaches and freelancers.
Appointment Reminder has no free plan — the cheapest option is $29/month. Remindly offers a free plan with 30 reminders per month so you can see results before spending anything. When you're ready to scale, Pro is also $29/month but includes WhatsApp.
Same price — but Remindly includes WhatsApp and a free plan
No. Appointment Reminder (appointmentreminder.com) sends reminders via SMS, email, and voice calls only. WhatsApp is not supported. For businesses serving clients who primarily use WhatsApp — which is the majority of users in Europe, Latin America, the Middle East, and beyond — this means reminders that often go unread.
Both Remindly Pro and Appointment Reminder's Starter plan are $29/month. But Remindly includes WhatsApp reminders, while Appointment Reminder does not. Remindly also has a free plan with 30 reminders per month — Appointment Reminder charges from day one.
Yes. If you use Google Calendar, Calendly, Acuity, or Square Appointments, Remindly connects in minutes. Your calendar stays unchanged — Remindly reads it and handles reminders automatically. No import needed.
Yes. Remindly supports automated voice call reminders on the Business plan. If the client does not answer, the system retries and falls back to SMS automatically. Voice is one channel among many — not the only option.
Remindly sends reminders in English, Spanish, Portuguese (Brazil), French, German, Italian, and Hebrew. Appointment Reminder does not offer multi-language reminder templates. For businesses with international or multilingual clientele, this matters.
Connect your Google Calendar and start sending WhatsApp reminders in minutes. Free plan available — no credit card required.
Start for freeRemindly is not affiliated with Appointment Reminder. All trademarks belong to their respective owners. Pricing information accurate as of April 2026.