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Calendesk appointment software, $22K MRR: one workflow
Calendesk is booking and client-management software for service businesses. Its $22K MRR is verified through the payment provider's API by TrustMRR (Stripe), as of September 30, 2026.
What it actually sells
Calendesk brings scheduling, payments, invoicing, notifications, CRM, and analytics into one place. It automates bookings, payments, reminders, subscriptions, invoicing, and client management across the workflow from first contact to final invoice.
The product supports subscription packages, group bookings, recurring appointments, and passes. It also provides a RESTful API for custom integrations, white-label booking experiences, and connections with calendars, payment services, and video-conferencing platforms.
How it charges
The official site shows its pricing as follows: Standard costs $79/mo billed annually or $97/mo billed monthly; Pro costs $117/mo annually or $147/mo monthly; Enterprise pricing is by individual contract. Prices are as shown on the site on 2026-10-01 and may change.
Month by month
Monthly revenue as read from the payment provider by TrustMRR, in US dollars, as of September 30, 2026.
| Month | Revenue (USD) |
|---|---|
| 2025-10 | $28,314 |
| 2025-11 | $28,210 |
| 2025-12 | $27,782 |
| 2026-01 | $34,188 |
| 2026-02 | $27,882 |
| 2026-03 | $30,084 |
| 2026-04 | $35,159 |
| 2026-05 | $28,024 |
| 2026-06 | $27,449 |
| 2026-07 | $29,412 |
| 2026-08 | $33,293 |
| 2026-09 | $35,871 |
Where customers come from
Visible site signals include API access, Zapier integration, connections with Zoom, Google Meet, WhatsApp, and Microsoft Teams, an employee mobile app, and a newsletter.
What stands out
It reports serving more than 380 businesses, with over 1,000,000+ successful meetings booked and $25M+ in payments processed.
The stated audience covers therapy, education, law, psychology, coaching, dietetics, fitness, and beauty. Its API supports custom integrations and white-label booking experiences, while its app connections span video meetings, calendars, payments, and communication tools.
From the official site
Our solution serves therapy, education, law, psychology, coaching, dietetics, fitness, and beauty industries.
Subscription packages, group bookings, recurring appointments, and passes designed for your business model.
Excerpts from the official website, fetched October 1, 2026.
Where it sits in the data
Calendesk's $22K MRR is higher than 96% of the 5,602 projects with payment-verified revenue in our dataset; the median across them is $150. Within the “Legal” category (40 projects) it is higher than 98% (category median $334). Snapshot: 2026-09-02 to 2026-09-30. The dataset only covers founders who chose to publish their numbers, so it leans toward businesses that work; use it for scale, not as an average.
Currency
All figures are in US dollars as published. A rough yuan or euro conversion is not applied here because prices, taxes and acquisition costs differ by country.
Could you build something like this?
In my view, the addressable buyer is a service business in one of the categories Calendesk names. A founder would need to identify where those businesses already discover software, then earn attention through that channel rather than assume integrations alone generate customers.
Building this would need real work. Payments, calendars, reminders, subscriptions, client information, and external services must work together reliably, while failed bookings and payment issues create support load. Regulation, data handling, security, integrations, and competing scheduling products are general obstacles for any business entering this category.
Verdict: Needs real work.
One thing to take from it
The main product lesson is breadth: Calendesk packages booking with payments, subscriptions, invoicing, notifications, CRM, and analytics. A new entrant would still need a clearly defined route to buyers, dependable core operations, and support for the failure points that come with connected business software.
Sources
- Calendesk official website, fetched October 1, 2026
- Calendesk pricing page, fetched October 1, 2026
- Calendesk about page, fetched October 1, 2026
- TrustMRR: revenue verified through the payment provider's API by TrustMRR (Stripe), as of September 30, 2026
Revenue, team and start-cost figures are what the founder reported at the interview date, not current figures and not a prediction of what you will earn. Product and pricing facts come from the business's own website as checked on 30 September 2026. Method & sources · Disclosure