How we developed a SaaS booking platform
Date Published

1. Initial situation: Many have a website - but no online booking
2. Everyday Life Without a System: Notebook, Excel & WhatsApp - and Why It Doesn't Scale
3. From plan to reality: Our MVP took 5 months - and that was an important lesson
4. Why SaaS instead of a CMS plugin: Independence, scalability, and seamless integrations
5. We develop SaaS products for your business
Initial situation: Many have a website - but no online booking
In conversations with operators of gyms, clubs, and medical facilities, we repeatedly encountered the same pattern: Either there's no website at all - or it's more of a digital business card without any real functionality in daily operations. Information is available, perhaps even a contact form, but the most important process still takes place outside the website.
This is a noticeable problem, especially with appointment-based services: Potential customers don't want to call, wait, or exchange messages; they want to find and book a suitable slot directly. Without this option, unnecessary hurdles arise - and many inquiries disappear before a conversation even takes place.
For the organization, this also means additional work: Appointments are coordinated manually, follow-up questions take time, and changes are prone to errors. We quickly realized: It's not just about "a nice website," but about a booking process that works reliably and integrates seamlessly into daily operations.
Everyday Life Without a System: Notebook, Excel & WhatsApp - and Why It Doesn't Scale
Despite this, many businesses still operate this way: appointments are jotted down in a notebook, maintained in Excel spreadsheets, or coordinated on the side via WhatsApp, Instagram DMs, and phone. Initially, this seems pragmatic - especially if the team is small or the workload remains manageable.
However, as soon as more than one person accepts appointments, multiple rooms or trainers need to be coordinated, or last-minute changes occur, things quickly become chaotic. Double bookings happen, available slots are unclear, customers ask for confirmations, and cancellations create gaps that no one can fill in time. The workload doesn't increase linearly, but rather exponentially - because suddenly every step requires follow-up questions and coordination.
This is precisely where we wanted to make a difference: with a solution that simplifies the booking process so much that it's actually used in everyday practice. Book online, confirm automatically, and clearly display availability - without anyone having to maintain lists or search through message chains. The idea for our booking platform arose from this need.
From plan to reality: Our MVP took 5 months and that was an important lesson.
Our first MVP took us about five months to develop. To be honest, we initially thought it would be quicker. "A calendar, a form, a few rules" - sounds simple on paper. But in practice, the booking process is full of details that only become apparent when real-world workflows are in place.
Even basic questions have consequences: What exactly constitutes a resource - a room, a trainer, equipment? How do we manage recurring availability, breaks, buffer times, holidays, and spontaneous exceptions? What happens with cancellations, rebookings, or no-shows? And how do we ensure the system remains clear for both employees and customers - without feeling like "software"?
These five months were therefore not purely development time, but primarily product work: understanding processes, finding simplifications, resolving edge cases effectively, and building a foundation stable enough to build upon. The result is an MVP that can not only "display" appointments, but also maps real booking logic - and is therefore ready for the next step.
Why SaaS instead of a CMS plugin: Independence, scalability, and seamless integrations
Relatively early on, we faced a fundamental question: Should we build this as a plugin for a common CMS - or as a standalone SaaS platform? A plugin initially seemed like the obvious choice, since many companies already use WordPress or another system. However, this very dependency is also the biggest limitation: As soon as bookings are "only" possible within a specific CMS environment, the platform defines the product's boundaries - technically, organizationally, and in the long term.
We deliberately wanted to develop a solution that could be integrated into any website - whether WordPress, Webflow, Shopware, or a completely custom-built site. A SaaS platform allows us to do exactly that: Integration via widget/embed or a clean API, without the customer having to commit to a specific tech setup. At the same time, we can develop the platform independently and roll out new features centrally, without creating plugin versions, conflicts, or update chains for each customer.
We can continue to develop the platform independently and roll out new features centrally, without each customer having to deal with different plugin versions, conflicts, or update chains. Another point that's often underestimated in practice is that booking is rarely "just a calendar." It involves roles and permissions (who can change what), separate data for each location or organization, traceable changes, notifications, integrations (e.g., calendar, email/SMS, payment), and stable performance - even when multiple employees are working simultaneously. As a SaaS solution, we can consistently address these requirements: a single security standard, a single release process, a clear data model, and an architecture that can grow with your needs, rather than adapting to the limitations of a plugin ecosystem.
In short, SaaS gives us the freedom to build a product that works everywhere, can be quickly improved, and remains scalable in the long term - without the typical limitations and maintenance headaches of traditional CMS plugins.
We develop SaaS products for your business
If you're looking to scale your business or invest in a new area, let's talk. We develop more than just websites; we build complete SaaS platforms and web applications that simulate real-world business processes: from initial concept and UX design to integrations, roles/permissions, and stable operation.
Whether you want to integrate a ready-made booking solution into your existing website or plan your own digital product, we'll help you structure your requirements, choose the right architecture, and develop a system that works in real-world scenarios, not just demos. Contact us, and together we'll figure out how you can quickly transition from manual coordination to a scalable, automated process.