A custom ERP for a service-based small or mid-sized business combines scheduling, finance, and access control modules with 380+ configurable workflows. It handles time zone conversion and recurring billing automatically, without depending on monthly per-user licenses.
| Module | Generic Off-the-Shelf ERP | Custom ERP for Services |
|---|---|---|
| Scheduling | Static, with no time zone detection | Dynamic, with overlap prevention |
| Billing and Integrations | Requires expensive third-party modules | Native, with MercadoPago and local payment gateways |
| Multi-Tenant Architecture | Unavailable or very expensive | Native isolation by location or client |
| Calendar Sync | Manual or through unreliable plugins | Native two-way sync with Google Calendar |
It needs three key modules: a scheduling and itinerary module with conflict detection, a finance module with invoicing and automatic billing, and a user control module with specific roles and permissions for the team. To go deeper into unified customer management, read how to automate scheduling, billing, and customer management.
The database stores every timestamp in standardized UTC format. The application automatically converts each appointment to the local time zone of both the client and the professional when booking and when sending reminders.
For a service-based SMB, custom modules make sense when the business logic does not fit the rigid structures of traditional ERPs. To evaluate whether to build your own system or pay for commercial licenses, see our guide on how to choose between custom software and SaaS licenses.
The modules use a decoupled architecture: real-time scheduling synced with Google Calendar, a MercadoPago payment gateway, and per-tenant RBAC access control to keep each client isolated and secure.
Every query to the PostgreSQL database includes a unique tenant identifier that is verified in the middleware layer. This prevents any cross-leakage of financial or scheduling data between different clients or business locations.
Proprietary solution built with Next.js, Prisma, PostgreSQL, and Docker for end-to-end management of scheduling, finance, and per-tenant access control.
We analyze your current processes and design the technical architecture with a clear ROI.
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