The verdict in three sentences
A custom medical appointment platform, GDPR-compliant and compliantly hosted, costs between 25,000 and 55,000 EUR net in 2026 for a group of practices in Berlin, over a 4-to-6-month timeline. SMS reminders and anti no-show logic cut absences by 20 to 25%, which translates directly into recovered, billable slots. Against a commission platform, custom software removes the monthly per-practitioner fee and makes you the owner of your patient relationship and your data.
What a custom medical booking module costs
The budget depends on practitioner count, specialties and integrations (existing calendar, SMS, teleconsultation). 2026 orders of magnitude for a group of practices.
| Item | Scope | 2026 range (EUR net) | Timeline |
|---|---|---|---|
| Discovery & UX | Patient journey, mockups | 4,000 - 8,000 | 2-4 weeks |
| Booking engine | Multi-practitioner, rules, rooms | 10,000 - 22,000 | 6-9 weeks |
| SMS/email reminders + anti no-show | Confirmations, waitlists | 5,000 - 11,000 | 3-5 weeks |
| GDPR patient portal | Consent, history, cancellation | 4,000 - 9,000 | 3-5 weeks |
| Compliant hosting | Certified, encryption | 4,000 - 9,000 / yr | ongoing |
| Maintenance | Fixes + evolutions | 400 - 900 / mo | ongoing |
A full module with reminders and patient portal typically sits between 32,000 and 48,000 EUR net, first-year compliant hosting included.
Custom vs commission platform
Booking platforms charge a per-practitioner subscription. Across a multi-practice group, this recurring cost quickly exceeds the investment in an owned solution.
| Criterion | Custom software | Subscription platform | Impact |
|---|---|---|---|
| Upfront cost | 32,000 - 48,000 EUR | 0 - 2,000 EUR | Platform nearly free at start |
| Recurring cost | 400 - 900 EUR/mo (support) | 130 - 180 EUR/mo/practitioner | Platform balloons with headcount |
| Annual cost (10 practitioners) | 5,000 - 11,000 EUR | 15,600 - 21,600 EUR | Custom ~2x cheaper/yr |
| Patient data ownership | Full | Shared/platform | Strategic stake |
| Journey customization | Unlimited | Standard only | Differentiation |
| No-show reduction | -20 to -25% (own rules) | -10 to -15% | Recovered slots |
From 8 to 10 practitioners, custom becomes cheaper within 3 years while making you the owner of your data.
Mini case study
Dr. Lucie Marin coordinates a group of 3 practices in Berlin, 11 practitioners. On a platform at 150 EUR/mo/practitioner, the group pays 19,800 EUR/year. The no-show rate is 14%, about 4,500 lost slots/year across 32,000 appointments. She invests 44,000 EUR net in a custom module (5-month timeline, hosting included). SMS reminders and automatic waitlist bring no-show down to 10%, recovering ~1,300 slots valued at 30 EUR net, i.e. 39,000 EUR/year. Combining subscription savings (~15,000 EUR/year) and recovered slots, payback lands in under 12 months.
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FAQ
Must medical booking software use compliant hosting?
Yes, as soon as it stores health data (reason, history). Expect 4,000 to 9,000 EUR/year in 2026 depending on volume. A pure calendar with no medical data may avoid it, but that is rarely the case in practice.
Do SMS reminders really cut absences?
Yes. A day-before reminder combined with an automatic waitlist lowers no-show by 20 to 25% on average. Each recovered slot is worth 25 to 40 EUR net depending on specialty.
Can we migrate off a platform without losing patients?
Yes, via a data export and a gradual switch. Patient communication (SMS, email, in-practice signage) is key: done well, retention exceeds 90% after 2 months.
What is the 3-year cost difference vs a platform?
For 10 practitioners, a platform costs about 47,000 to 65,000 EUR over 3 years. Custom software amortizes its upfront cost and only charges maintenance, often totaling less by year 3.
Should teleconsultation be included from the start?
Not necessarily. Teleconsultation adds 6,000 to 12,000 EUR. Many groups ship booking + reminders first, then add teleconsultation in phase 2 based on actual demand.
Let's scope your project. Tell us your practitioner count, specialties and current solution for a precise GDPR-compliant estimate. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
