Prolink develops business applications that fully adapt to the structure, working methods and goals of your organisation. Unlike off-the-shelf software that forces you to adjust your processes to fit the tool, Prolink builds applications around your existing workflows — meaning your team continues working the way it knows, but with a tool that makes that work faster, more transparent and less prone to errors. Every project starts with analysis, not a proposal, because without understanding how an organisation actually functions it is not possible to define what the application needs to do.
For companies in Western and Northern Europe evaluating development partners, the practical advantages of working with a Zagreb-based EU studio are straightforward: full GDPR compliance by default, Central European timezone with no meaningful gap for clients in the UK, the Netherlands, Belgium, France, Norway or Sweden, fluent communication in English and German, and competitive rates compared to Western European agencies. Zagreb is under two hours from most Western European capitals — project kickoffs and milestone reviews in person are a realistic option, not a logistical challenge.
Business process analysis and planning
The initial phase involves detailed analysis of existing procedures, communication flows and user requirements. Based on the information gathered, functional modules are defined that collectively support business processes and reduce operational costs. The result is a precise technical specification and development plan that guarantee efficient implementation, optimised resource use and straightforward maintenance. This phase is not a formality — it is where the majority of decisions that determine the quality and cost of the final system are made, and skipping it is the single most common reason business application projects run over budget and over time.
System development and architecture
The technical foundation of every business application is established through carefully planned architecture. Backend systems are built using proven technologies that ensure stability and scalability, while user interfaces are shaped according to responsive design principles. Applications are developed and tested on a development server, enabling simulation of real conditions and performance control across different devices before deployment to the production environment. This controlled approach means that by the time the system goes live, every edge case has already been identified and resolved.
Technologies and security standards
Mobile applications are built using the Ionic framework, enabling the development of fast and responsive solutions for Android and iOS from a single codebase. The server side is based on a custom PHP backend that exposes a JSON API interface for secure data exchange between client applications and the server. Security is addressed through authentication methods, data transmission encryption and role-based access control.
| Feature | Prolink custom app | Off-the-shelf software |
|---|---|---|
| Adapts to your processes | Fully | Partially or not at all |
| ERP/CRM integration | Custom, bidirectional | Limited or paid add-on |
| User roles and access control | Granular, per requirement | Fixed tiers |
| Mobile access | Android and iOS, native feel | Often web-only |
| GDPR compliance | Built in from day one | Varies by vendor |
| Ongoing development | According to your roadmap | Vendor's roadmap |
| Total cost of ownership | Predictable, fixed-price | Licence fees accumulate |
UI/UX design
Regardless of the complexity of the business logic, interface intuitiveness is critical for user adoption. The UI/UX design phase focuses on information clarity, logical element layout and optimisation for different screen sizes. This approach reduces the need for additional training and increases productivity in day-to-day use. A system that people actually use is worth more than a technically superior one that people avoid because it feels cumbersome.
Integrations with existing systems
Business applications built by Prolink can be fully integrated with ERP, CRM, accounting, warehouse and HR systems. Rather than replacing what already works, integrations connect new functionality to existing infrastructure through custom API layers that enable secure bidirectional communication without changes to the existing setup.
| Integration type | What it enables |
|---|---|
| ERP | Real-time updates of orders, inventory and financial flows |
| CRM | Automatic sync of contacts, offers and sales opportunities |
| Accounting (Synesis, Pantheon, e-računi, 4D Wand) | Automatic invoice generation, cost transfer, financial record sync |
| WMS | Inventory tracking, serial numbers, expiry dates, dispatch notes |
| HR systems | Working hours, payroll, shift planning, leave approval |
Security and access rights
Multi-level authentication systems, user role control and data transmission encryption are implemented as standard. Every activity within the system is logged in audit trails, enabling complete transparency and access tracking. Regular security reviews and updates keep the system stable and resilient against new threats.
Testing and implementation
Before production deployment every application goes through performance, security and cross-device testing. Only after all functionality is confirmed does the application move to the production environment, accompanied by full technical documentation and user training.
Maintenance and long-term support
Prolink provides continuous technical support and regular maintenance of delivered solutions. Systems are upgraded in line with business development and technological changes, and the team monitors application performance and provides timely assistance. This is not a support contract in the traditional sense — it is an ongoing technical partnership where Prolink remains accountable for the system it built.
Applications built for organisations that cannot afford downtime
The clearest way to understand what Prolink builds is to look at who uses it.
AVIS Rent a Car, one of the world's most recognised vehicle rental brands, uses a Prolink-built business application to manage its fleet operations. The application connects vehicle availability, reservation management and branch-level administration in a single system, replacing manual coordination across locations with a unified operational tool. When a business operates across multiple locations and depends on real-time data accuracy, the margin for error in the underlying system is zero — and that is the standard the application was built to.
Institut IGH is one of Croatia's largest and most established engineering and consulting organisations, with decades of experience in infrastructure, construction and technical inspection across the region. For an organisation of that complexity — multiple departments, field teams, large volumes of technical documentation and strict regulatory requirements — a generic project management tool is not a realistic option. Prolink developed a business application that maps to IGH's actual operational structure, supporting field work coordination, documentation workflows and internal reporting in a way that a standard SaaS product cannot.
Skipper4you, a platform connecting boat owners and skippers across the Mediterranean, uses a Prolink-built application to manage the operational layer of its marketplace — crew scheduling, booking coordination and communication between platform participants. The application handles the complexity of a two-sided market where reliability is not optional: a skipper who does not show up is not an inconvenience, it is a direct commercial problem for everyone involved.
For a national courier network Prolink developed a system that connects dispatch, drivers and recipients in real time, covering everything from order intake and route assignment to proof of delivery and customer notification. For a company managing sales representatives across multiple regions, Prolink built a mobile-first application that gives field teams access to product catalogues, order entry and visit reporting without requiring an office connection. For a large retail operation Prolink developed a QR-based inventory system that replaced a manual counting process prone to errors with a fast, accurate and auditable digital workflow.
What these projects have in common is not the industry or the size of the organisation — it is that each of them had a specific operational problem that a generic tool could not solve, and each of them needed a development partner who would still be available two years after delivery.
Why companies across Europe choose a nearshore EU development partner
Western European development agencies charge Western European rates. Offshore teams outside the EU introduce GDPR complexity, timezone friction and communication overhead that erodes the cost advantage over time. Prolink offers a third option: competitive Central European pricing, full EU jurisdiction, no data sovereignty concerns and a team with over a decade of production application experience.
Fixed-price contracts mean the budget agreed at the start is the budget at delivery. Full IP transfer means the application belongs entirely to the client. Long-term technical support is agreed according to actual needs, without subscriptions or lock-in. If you are evaluating development partners for your next business application project and want a realistic estimate based on actual scope, contact us — the first conversation commits you to nothing.
What is the difference between a custom business application and off-the-shelf software?
Off-the-shelf software is built for the broadest possible market, which means it covers common use cases well but rarely maps precisely to how a specific organisation works. A custom business application is built around your actual processes, user roles and data flows — which means no workarounds, no unused modules and no licence fees for functionality you will never use. The upfront investment is higher, but the total cost of ownership over three to five years is typically lower, and the operational fit is incomparably better.
How long does business application development take?
A focused application covering a clearly defined set of processes can be delivered in two to four months. Mid-complexity systems with multiple integrations typically require four to eight months. Large platforms with complex business logic, multiple user roles and extensive integrations can take eight to twelve months or more. The timeline depends primarily on the clarity of requirements at the start of the project — well-defined scope delivers on time, vague scope does not.
Can the application integrate with our existing ERP or CRM?
Yes. Prolink develops custom API integrations with ERP, CRM, accounting, WMS and HR systems. The integration approach is tailored to the technical specifications of your existing systems, which means no changes are required to your current infrastructure. Bidirectional data sync, real-time updates and role-based access across integrated systems are standard capabilities.
Is the pricing fixed or time-and-materials?
Prolink works exclusively with fixed-price contracts. The scope is precisely defined before development begins, and the price agreed at the start is the price at delivery. The only situation in which the price changes is when the client requests functionality outside the original scope — that is then defined as a separate requirement with its own price and timeline.
Who owns the application after delivery?
The client owns the application in full — all source code, assets and documentation are transferred to the client upon project completion. There are no licensing fees, no vendor lock-in and no dependency on Prolink for the application to continue operating. Long-term technical support and maintenance are available as a separate agreement based on actual needs.
How is GDPR compliance handled?
Prolink is based in Croatia, an EU member state, which means GDPR compliance is not an add-on — it is the default operating framework. Data handling, storage, access control and transmission encryption are designed to meet GDPR requirements from the first line of code. For clients in regulated industries or with specific data residency requirements, these constraints are factored into the architecture at the planning stage.
What happens after the application is delivered?
Delivery is not the end of the engagement. Prolink provides ongoing technical support, security updates and compatibility maintenance as a separate service with a clearly agreed scope and price. As the business evolves, new functionality can be added through the same fixed-price process used for the original development. The goal is a long-term technical partnership, not a one-time transaction.
Can the application work on mobile devices?
Yes. Business applications developed by Prolink are built with mobile access as a standard requirement, not an afterthought. Mobile interfaces are developed using the Ionic framework, which delivers a native-quality experience on both Android and iOS from a single codebase. Field teams, sales representatives and managers on the move have the same access to the system as office-based users.
