Mobile app partner for leading software companies

DECODE is a professional services firm specialized in developing mobile apps for iOS and Android - native and React Native - a vibrant group of highly skilled engineers, with years of experience in various domains, such as telco, fintech, IoT, etc.

We are a mobile software consultancy, developing tailor-made apps for Android and iOS.
We add value by creativity, engineering expertise and reliable delivery.
We build long-term partnerships, working with our customers, not for them.
The way we work is by providing self-managed, dedicated teams.

$25 - $49 / hr
10 - 49
Show all +
Zagreb, Croatia


Key clients: 
Metaswith ( - DECODE is the key partner for their unified communication mobile clients Assecco ( - they handpicked DECODE as a partner on their mobile banking app development project Kiën ( - We developed sleek native Android and iOS apps that allow users to control the Kiën lights in their home according to their mood


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App Development for Vitamin Company

"Their communication was highly responsive, they were proactive and had that youthful zeal."

Willing to refer: 
The Project
$10,000 to $49,999
July 2016 - Oct. 2017
Project summary: 

DECODE HQ developed a mobile app for a vitamin company. Their team created native versions of both iOS and Android apps as well as the backend web system. 

The Reviewer
1-10 Employees
Zagreb, Croatia
Dean Vranić
CEO, Vitastiq d.o.o.
The Review
Feedback summary: 

The earliest version of the app attracted clients, tech experts, and journalists, and the subsequent version has been downloaded thousands of times. DECODE HQ is responsive and adaptable, prioritizing the relationship with their client. Their team goes above and beyond to deliver quality results.

The client submitted this review online.


Please describe your company and your position there.

I am the founder and CEO of Vitastiq Inc, an Indiegogo-backed lifestyle product startup from Zagreb, Croatia. Vitastiq is a company behind the world's first personal gadget that helps track your vitamin and mineral trend using a smartphone. Vitastiq provides information about 26 vitamins and minerals and their natural sources.


For what projects/services did your company hire DECODE HQ?

A companion mobile application is a crucial part of our product that is based on the vitamin tracking device. As a consumer product startup, we didn’t have the needed software engineering capabilities in house, so we hired DECODE to build the mobile application for us.

What were your goals for this project?

As a startup, we wanted our innovative product to grow fast. A mobile app is the only way to consume the device’s readings and derive value from them, so it was of utmost importance for us to be simple, intuitive and superb in usability and UX. The mobile app development project had a major impact on our company’s overall business, right next to the device itself.


How did you select this vendor?

We found ourselves in a position where we had to disengage from our initial app vendor on account of their inability to deliver such a demanding project. DECODE came highly recommended from our hardware platform vendor, who had done business with them before and were convinced in their capability. It was DECODE’s agility, overall technical expertise and previous experience with mobile-connected devices that made our core team decide to go with them.

Describe the project in detail.

We had the hardware figured out but we were looking for a dependable partner to develop the app that would sync with the hardware pen that scans vitamin and mineral levels. The goal of the app was to display and track the data from the vitamin checks and help their users make educated decisions about their health.

Accurate and reliable communication between the mobile phone (app) and the pen was one of the key technical requirements. In addition to implementing native mobile applications for iOS and Android, 3 different versions for each platform, DECODE also worked with our team on the backend web system. DECODE also provided consultancy on all technical aspects of the product.

What was the team composition?

DECODE’s team consisted of 1 Android, 1 iOS developer and a technical lead that managed the project.


Can you share any outcomes from the project that demonstrate progress or success?

The first app versions were more than good enough to attract early adopters, technology enthusiast, and journalists - WIred named us “the coolest thing in their office” at the time. Based on that initial feedback and learnings, we worked with DECODE on quickly releasing subsequent versions with improvements and new features, which led to thousands of downloads in the first months.

How effective was the workflow between your team and theirs?

Working with DECODE was no different than working with our own staff. The communication was very open, both ways, which enabled us all to be very efficient. Our offices are literally “across the street”, so most of our meetings and workshops were face to face. DECODE delivered on their promises, making set deadlines with no exceptions and being much more than “just” a vendor, a true partner.

What did you find most impressive about this company?

While working on Vitastiq, DECODE pulled all the stops. Of course, they delivered the project, but what’s also important is the relationship with us and the way they work. Their communication was highly responsive, they were proactive and had that youthful zeal. I don’t know how they did it, but the whole time we were working together, we felt like we were their only client!

Are there any areas for improvement?

The only thing I “regret” about working with DECODE was not knowing them earlier so we could have hired them from the very beginning. 

Overall Score
  • 5.0 Scheduling
  • 4.5 Cost
    Value / within estimates
  • 5.0 Quality
    Service & deliverables
  • 5.0 NPS
    Willing to refer