hello@threennovate.com Talk to us

Custom software,
designed and built
by the people
you talk to.

We're a small design and engineering studio in Zagreb. We build backend systems, web and mobile apps, cloud platforms and practical AI.

Hire us to own a whole project, to build one part of a larger system, or to work inside your team as external engineers.

See the work Start a conversation

What have you actually built?

Software people use every day to do their job.

Automotive service centre · Croatia

Booking software with an AI assistant that takes bookings at any hour.

13,000+ bookings a year go through the platform

Service staff and call-centre operators run the day in one calendar: a column per service, 30-minute slots, breaks and closed days. Customers can also write on web chat or WhatsApp, and the assistant books them into that same calendar.

We built
Scheduling and capacity rules, customer and service history, SMS automation, analytics, the AI assistant
Stack
.NET, Angular, LLM integration
Read the case study

Restaurant · Croatia

One order, followed on three screens: the app, the kitchen board and the pickup display.

Customers order and pay in the app, then watch the order go from received to ready. Kitchen staff move that same order across a board, stage by stage, and a screen in the restaurant shows which numbers are ready to pick up. One status change reaches all three at once.

Used by
Customers, kitchen staff and front-of-house
We built
The mobile app, the kitchen board, the pickup screen, checkout and payments, push notifications, Live Activities on iOS
Stack
Flutter, React, TypeScript, Supabase, Stripe, Cloudflare Workers
Read the case study
A phone stands on the deck of a small fishing boat, open on the Submania permit portal for 2026 sport fishing permits. In front of it lies a KŠRM Submania membership card marked as active.

KŠRM & RK Submania · Fishing and diving clubs

Permits, payments and membership cards for a fishing and diving club.

Anyone can apply for a permit online. The system adds up the permit, club and federation fees, emails a payment slip, and confirms the payment from the bank's daily statement. Members carry a card whose QR code shows their status at that moment.

.NET, Umbraco, Angular, SQL Server

Read the case study
On a desk in front of a frosted glass wall, a laptop shows the AssetLens asset list and an asset's history, a phone scans an asset's barcode during an inventory count, and a handheld barcode scanner stands beside them. Behind the glass, a blurred figure scans items on a shelf.

AssetLens · Asset tracking

Asset tracking with a scan, from a phone or a barcode scanner.

Staff scan equipment with a phone camera or a Bluetooth or USB scanner, and the platform shows where each asset is and where it has been.

.NET, Angular

Read the case study
A tablet on the reception counter of a car workshop shows the CRM dashboard with open work orders, unpaid invoices, open offers and low stock. A car key with a tag numbered 14 lies in front of it; behind, a mechanic works under a car on a lift.

Car workshops · Croatia

Workshop software from intake to a fiscalized invoice.

Clients and vehicles, appointments, work orders, parts, offers and invoices, across the workshop's branches.

React, TypeScript, Supabase

Read the case study

How much of it do you build yourselves?

End to end, by the same team.

Some systems we start from an empty repository. Others we take over and keep developing, or we own one part of something larger.

What can your team cover?

, , , and .

Most projects need several of these at once. Pick one to see where it shows up in our work.

The rules, data and automation underneath. Users never see it, and they notice straight away when it's wrong.

Usually built with.NET, SQL Server, Supabase, Cloudflare Workers

  • Scheduling with capacity per service, breaks and closed daysAutomotive service
  • Bank statements read from email and matched to payments, with duplicate protectionSports association
  • Invoices fiscalized under Croatian tax rulesCar workshop
  • SMS reminders, transactional email and PDF membership cardsSeveral projects

Do you build websites too?

Yes. We design the experience, build the site and make the CMS easy to live with.

Structure, design, frontend and CMS, made as one piece. The site looks like you, loads fast, and stays easy for your own people to update long after launch.

MedExpertMedical equipment , opens medexpert.hr in a new tab Kristina KebetMusic artist , opens kristinakebetozturker.com in a new tab SO DOCultural association , opens so-do.hr in a new tab Entrada ProjektResidential project , opens entradaprojekt.hr in a new tab Grounded SerenityWellness retreat , opens groundedserenityretreats.com in a new tab KodexDigital media portal , opens kodex.hr in a new tab EventfulEvent agency , opens eventful.hr in a new tab REEDUTherapeutic services , opens reedu.hr in a new tab OPG ZečevićAgricultural producer , opens opgzecevic.hr in a new tab SalviaHoliday homes , opens salviahomes.com in a new tab Volim voduWeb shop , opens volimvodu.hr in a new tab Demax ProjektConstruction company , opens demaxprojekt.hr in a new tab

You'll know everyone on your project by name.

There's no account manager between you and the code. The people on the first call are the people who design and build your system, and the ones you talk to when something needs to change.

  • Nino

    Engineering

  • Martin

    Engineering

  • Ivan

    Engineering

  • Luka

    Engineering

  • Dorotea

    Design

  • Valentina

    Finance

Working with us

Bring us in for the whole system, or for the part you need.

  1. A complete project

    You bring the problem and the people who know it. We design, build and launch the system, and stay on after launch if you want us to.

  2. One part of a system

    A booking engine, a payment integration, a mobile app for an existing platform. We build that piece and fit it to what you already run.

  3. An existing product

    To extend it or take it over. We start by reading and running the code, fix what's fragile, then build what's next.

  4. An external engineering team

    Engineers who work in your repository, your tools and your planning, next to your own people, for as long as you need them.

Contact

Tell us what you're building.

A few lines is enough to start. Your message goes straight to the team.

Rather write your own email?

hello@threennovate.com

Hi Threennovate,

we need help with

Nothing here is required except a way to reply. No newsletter, no sales sequence. How we handle your message.