You have an idea

to develop your own app, but not sure where to start? Contact us to help you realize your idea.

Development of applications is a process that consists of several necessary steps. It starts with analyzing and specifying the requirements when we go through your idea together to determine the purpose of the application and its functionality. After that, we start with the development of a conceptual solution that defines the structure and interactions of users with the application. The third step involves the application design process based on the sketch. The sketch contains everything you need to make your application look recognizable. After confirming the design, we move on to the programming part of the job, which is the very essence of application development. This is followed by application integration and testing to confirm the overall connectivity of the application components. Finally, a user guide is created and the application is introduced into the business system.

In our offer of services you can find several different solutions depending on your business needs. You just need to customize the website for a specific task or software that will connect your entire business. Maybe you just need to customize some of the existing applications you use, let us know so we can work out your idea together. After we create the application specification, we will make you an offer for our service.
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creating CSS 3 web applications
development of PHP web applications
creation of Wordpress web applications

Web application development

We create business applications in languages ​​and technologies: PHP, Javascript, jQuery, Node JS, HTML, CSS, Wordpress, WooCommerce and Bitrix24 . Our application provides you with business on the go, mobility and flexibility, and the production technology provides you with a top design that will meet all your business needs. Your app is used on a web browser (e.g. Google Chrome) and you don't need any additional installation. Your application is available to you wherever you really need it through various devices: laptop, mobile phone, tablet or desktop computer. Our applications are completely individual and tailored to your business. Through the web application you can significantly simplify, facilitate and speed up your business, so contact us to implement your business processes in the appropriate web application.

Practical example: eRačun.pro

The best indicator of our capabilities is the application we designed and developed ourselves — eRačun.pro, a web application for searching for KPD codes for Croatian fiscalization 2.0.

The application enables fast searching through 3,359 KPD codes with advanced filtering by NKD categories, table and card views, bilingual support (Croatian and English), and instant code copying. A standout feature is the AI assistant, which analyzes a product or service description and independently suggests the correct KPD code — saving users time and reducing the chance of errors when creating e-invoices.

Through this project, we covered the entire development cycle: analyzing regulations, designing a database with thousands of codes, building a fast search engine, integrating artificial intelligence, and deploying and maintaining the application in real-world use.

Aplikacija e.račun.pro
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Database development

If you need database development, feel free to get in touch so we can define your business needs for more efficient data management. We will carefully analyze your requirements and business processes to identify the key elements of your business.

During the analysis phase, we will conduct an in-depth analysis of the identified needs and prepare a detailed plan for database development.
Once the analysis is approved, we will begin implementing the database using technologies suited to your needs:
MariaDB, MySQL, SQL Server or MS Access . This phase includes the creation of tables, implementation of security measures and access rights.

Additional services
Database integration with your existing systems, staff training for effective database use, maintenance and post-implementation support.
Price
The price depends on the scope of the project and specific requirements. After the initial meeting and analysis, we will provide you with the exact price and production deadlines.
Why choose us?
Freestyle is dedicated to providing high quality solutions tailored to your needs. We have experience working with different database technologies and always strive to achieve long-term partnerships with our clients.
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Web development

Customizing web and desktop programs

We offer customization and expansion of the functionality of the MS Office suite of applications: Excel, Word, Access using the VBA programming language. If you work with Google applications, we offer you the creation and customization of documents, tables and forms using Google Apps Script. In your day-to-day business, you work with spreadsheet applications such as MS Excel or Google Sheets, and you probably use only a small fraction of their capabilities. Through various educations, you also learn things that you rarely or never use in business, and they can be a time burden for your employees. Therefore, we offer you the service of adapting desktop applications to the needs of your business in such a way as to automate certain business tasks so that you have more time to devote to selling services or products.

Frequently asked questions about web application development

1What are the steps in developing a web application?

Web application development is a structured process in which each step builds the foundation for the next:

  1. Requirements analysis — through a conversation, we get to know your business processes in detail and define what the application should do, who the users are, and what problems it solves.
  2. Specification and architecture — we create a technical specification, choose technologies and plan the structure of the application and database design adapted to your needs.
  3. Interface design (UI/UX) — we design a clear and simple user interface that makes it easier for your users to work.
  4. Programming — we develop the application in stages, regularly show you the progress and adjust the solution according to your feedback.
  5. Testing — we thoroughly check functionality, security, and performance to eliminate errors before going live.
  6. Deployment and support — we deploy the application on the server, train you on how to use it, and provide maintenance and technical support after launch.

Application development is a collaborative process — we stay in touch throughout to ensure the final solution is exactly the right fit for your business.

2What technologies do you use to build web applications?
We work with trusted technologies: PHP and JavaScript, MySQL, MS SQL Server and PostgreSQL databases, modern frameworks including Laravel and Next.js, and WordPress for content management. We select the best technology stack for your specific project.
3Can you customize an existing application to our needs?
Yes, we specialize in customizing existing web and desktop applications to fit specific business processes.
4Do you build databases?
Yes, we design and build databases optimized for your business needs, with a focus on security and performance.
5What is the KPD Search Tool?
The KPD Search Tool helps you quickly find the correct product classification codes (KPD) required for e-invoices under Croatian fiscalization law.
6How can the AI Assistant help me with KPD codes?
The AI Assistant analyzes your product or service description and recommends the most suitable KPD code — saving time and minimizing errors in your e-invoicing process.