Custom Accounting Software Development

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Overview

Custom accounting software development when standard programs do not fit

Custom accounting software development makes sense when off-the-shelf programs cannot handle your invoicing, pricing or B2B terms. In Tallinn, we build unique accounting programs and integrate online shops with accounting software, so orders, invoices and payments flow automatically and manual data entry is kept to a minimum.

Unique accounting programs

If your business logic is unusual – complex pricing agreements, several legal entities, project-based billing or industry specifics – we build a program that follows exactly those rules. It can be connected to your orders, quotes and work-time data.

Shop and accounting integration

We connect your online shop to accounting software, for example Merit Aktiva or Directo, so orders, customers, invoices and payments arrive there automatically. We do the same for B2B sales, where prices, credit limits and payment terms differ per client.

Web and software development

B2B and e-commerce

Accounting connected to your whole business platform

We have integrated online shops with accounting software and built B2B platforms. We would gladly publish data, mockups and the business logic we built, but we are bound by NDAs. On request, we can share phone contacts of clients who used our services and were satisfied.

  • Custom accounting programs
  • Online shop and accounting software integration
  • Automatic invoice and payment sync
  • B2B price lists and client-specific terms
  • Order and stock reconciliation
  • Management reports
  • Links to quote and work-time modules

Frequently asked questions

Which niches have you worked in?

We have built order-processing, work-time and quote platforms for sport, logistics, online and offline shops, ship servicing, sale of ship equipment, retail and B2B sale of electrical equipment. Accounting integration is often a key part of these platforms.

Can we see your previous solutions?

We would gladly show data, mockups and the business logic we built, but we are bound by NDAs. On request, we can share phone contacts of satisfied clients so you can ask them directly how the cooperation went.

Which accounting programs can an online shop be connected to?

Estonian companies often use, for example, Merit Aktiva or Directo. Integration options depend on the program's interface (API), so before development we check which data can be exchanged automatically.

Do we have to replace our current accounting program?

Usually not. In many cases it is enough to connect your shop or business platform to the program you already use. We recommend a unique accounting program only when a standard one cannot reasonably cover your rules and workflow.

Is the solution suitable for B2B sales?

Yes. We have built platforms for B2B sale of electrical equipment, among others. Client-specific prices, payment terms and invoicing can be set up so that they reach your accounting correctly and automatically.

Which accounting programs do you integrate with?

We have integrated stores and platforms with Merit Aktiva, Directo and other accounting software common in Estonia. For a new program we study its API and propose a solution.

Our stack

Tools and technologies that we use in our work

We combine expertise, technology, and AI to create solutions that bring real value to your business.
Our work isn’t just about code or design — it’s about growth, efficiency, and measurable results.

Design

We create 100% UI/UX-friendly interfaces that help businesses grow.
AI accelerates creativity and ensures every design aligns perfectly with client goals.

Figma
Adobe Illustrator
Adobe Photoshop
Adobe XD
Midjourney
Recraft AI

Development

We build reliable, scalable, and user-friendly digital products that drive results.
AI tools help us work faster and maintain top quality at every stage.

HTML5
CSS3
JavaScript
PHP
Laravel
Python

9+ technologies

Integration

We connect systems, services, and platforms into one seamless ecosystem.
You get smoother operations, fewer manual tasks, and smarter automation.

WordPress
WooCommerce
Klaviyo
Mailchimp
Montonio
PayPal

20+ services

Testimonials

Our clients
about working
with us

Our clients about working with us

Start your project today

If you are looking for a reliable partner for your business,
fill out the form and we will contact you as soon as possible

If you are looking for a reliable partner for your business, fill out the form and we will contact you as soon as possible