Simple pricing that grows with you
Start free with a booking page on your primary Google Calendar, plus 25 reminders to get going. Upgrade as you grow, and get 2 months free with annual billing.
- SMS open rates significantly outperform email; messages are typically read within minutes
- Customers report fewer no-shows after switching to SMS reminders
- Clients reply to confirm or cancel — two-way texting, no app to download
- Free plan available; paid plans from $19/mo USD, cancel any time, with a 30-day money-back guarantee on new subscriptions
Kalama (formerly SMS Reminder) pricing plans
Start free. Upgrade as you grow. Get 2 months free with annual billing.
- Booking page on your primary calendar
- Your logo and brand colour on your booking page
- 1 user
- 25 reminders, one time — not monthly
Once the 25 are used, your booking page keeps working. Reminders start again when you upgrade.
No card needed to start. You only add one when you choose a paid plan.
Need reminders every month
Plans differ only in number of reminders, calendars, and users. No features are paywalled.
All prices in USD. Local pricing available in EUR, CAD, AUD, BRL and GBP.
Trusted by small businesses that run on appointments
- 2,000+Businesses
- 5M+Reminders sent
- 786K+Installs on Google Workspace
- 100+Countries supported
- ★★★★★
“It syncs seamlessly with Google Calendar and sends automatic text message reminders. The setup is fast and easy, even for people who aren't very tech-oriented.”
- ★★★★★
“Game changer for my patients and I. It automatically sends out reminders for upcoming sessions, which has greatly reduced missed appointments and last-minute cancellations.”
- ★★★★★
“I've completed my own testing of this app and it does exactly what it says it does. I am so impressed that I will be subscribing to the paid version.”
Reviews verified on the Google Workspace Marketplace
Set it up once
Choose when reminders go out, edit the message, and connect your calendar. Every appointment with a phone number gets its reminder automatically.
Which plan fits?
Each SMS segment counts as one reminder, so a short text (up to 160 standard characters) uses one. Most businesses send a confirmation and one reminder per appointment, so a plan covers about half its reminder count in appointments.
Not sure? Start free and see how many reminders you use. You can change plans any time.
A few fewer missed appointments can make a difference.
According to an internal SMS Reminder customer survey, the median estimated cost of a missed appointment was $175.1 For some businesses, reducing even a few missed appointments may help offset the cost of SMS reminders. Actual results vary.
Text messages get seen
Every paid plan includes the core features
Paid plans differ only in number of reminders, calendars, and users. No features are paywalled. The free plan covers booking on your primary calendar for 1 user, with 25 reminders to get started.
Billing questions
Click any question to expand the answer.
Is there a free plan?
Yes. You get a booking page on your primary Google Calendar for one user, plus 25 SMS reminders — a one-time allowance, not a monthly one. Paid plans add monthly reminders, more calendars and more users.
Do I need a credit card to start?
No. You can create your account and use the free plan without entering any card details. You only add a payment method when you choose a paid plan.
What happens when my 25 reminders run out?
Your booking page, calendar sync and dashboard keep working exactly as before. Only the reminders pause, and they resume as soon as you pick a plan.
Which plan should I choose?
Pick by volume. Each SMS segment counts as one reminder, so a short text (up to 160 standard characters) uses one, and most businesses send a confirmation plus one reminder per appointment. Basic covers about 25 appointments a month, Starter about 50, Business about 125, Enterprise about 250 and Premium about 500.
Which SMS appointment service is most reliable for a 5 person team?
For a five-person team, Kalama's Enterprise plan includes 5 users and 500 SMS reminders a month for $75/month. Business covers 2 users and 250 reminders for $45/month. Each team member's appointments can sit on their own Google Calendar.
Most affordable SMS notification tools for small service businesses
Compare the price per reminder at the volume you'll actually send. Kalama's paid plans run from $19/month for 50 reminders to $125/month for 1,000, annual billing gives 2 months free, and the free plan includes a booking page plus 25 reminders one time. Most businesses send a confirmation plus one reminder per appointment, so 50 reminders covers about 25 appointments a month.
Can I cancel any time?
Yes. Cancel from your dashboard at any time with no fees or lock-in.
What if a paid plan is not right for me?
New subscriptions come with a 30-day money-back guarantee. See the terms of service for the details.
Can clients reply to reminders?
Yes. With two-way texting, clients can reply in plain language to confirm, cancel, or ask to reschedule, and Kalama (formerly SMS Reminder) responds automatically — or they can tap the confirm/cancel link in the message.
What counts as a reminder?
Each SMS segment counts as one reminder. A standard text of up to 160 characters is one segment; longer messages, emoji or some accented characters can use more than one.
What if I exceed my monthly limit?
Reminders stop sending until the next billing period. You can upgrade any time.
Do you offer annual billing?
Yes. Switch to annual billing using the toggle above and you get 2 months free — you pay for 10 months instead of 12.
What currencies do you support?
USD, with local pricing also available in EUR, CAD, AUD, BRL, and GBP.
Can I change plans?
Yes, you can upgrade or downgrade any time. Changes apply at the next billing cycle.
What is a calendar?
A Google Calendar connected to Kalama (formerly SMS Reminder). The free plan syncs your primary Google Calendar only; each paid plan includes a set number.
Ready to reduce no-shows?
Start free today.
No setup fees, cancel any time.
All prices in USD · EUR, CAD, AUD, BRL, GBP also available
- Source: SMS Reminder customer survey, August 2025. Question: "On average, how much does it cost your business when a customer doesn't show up for an appointment?" 30 of 34 respondents answered. Median: $175; mean: $178; range: $0–$500; standard deviation: $131.11. Self-reported data; results may not be representative of all appointment-based businesses.
- Source: SimpleTexting, "Email vs. SMS Marketing Statistics," simpletexting.com/blog/email-vs-sms-marketing. Open rate and read-time figures are industry averages reported by SimpleTexting and may vary.