K 7 T E C H


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Top Mobile App Development Agency in Serbia, ranked #1 on Clutch

Get in touch

About Us

K7 Tech Agency is a mobile and web development agency. We offer full support and a range of professional services to carry out your project - from market research to branding and finally, deployment.

Kick-start your project and put it on the right path by making sure you have the best team possible working on it - get to know our team better.

Get 30 min consultation


Call Recorder - Recording Mobile App

iOS mobile app development

Utility mobile application enabling call recording on iOS phones. Beautiful UI, seamless UX.

Visit Call Recorder page
K7 Tech Call Recorder Mobile Preview
K7 Tech Trainers App App preview on monitor

Trainers App

Web app development, Website Development

Enterprise Web Application connecting trainers with their customers.

Visit Trainers App page
K7 tech News app preview on mobile phone

Mobile App Development

Our expertise

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Android Development

We create every Android mobile application using the latest technology, including Kotlin and Java.

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iOS Development

With the programming language Swift, we make top iOS mobile apps that perfectly suit our clients' vision.

K7 Tech Web Services Deployment Service

Web Development

Collaboration within our team of professionals - developers, UI/UX designers, and project managers - results in creating the best possible mobile and web applications that our clients have in mind.

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Creative services

We create products from the ground up, including user experience research, user interface design and branding. We will take care of your project and provide everything you need to build a successful mobile application.

K7 Tech GoodFirms, appfutura, Clutch and Upwork badges


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"K7 Tech provided front and backend web development. They had delivered against a rather fluid brief very quickly. They were reliable and the workflow was seamless. "

Karl M. CEO, Consulting Business

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"There is a reason they're rated 100%. They understand your needs, accommodate them, and meet your requirements. It was a pleasure working with K7 Tech. I have worked with different freelancers and agencies, but they're absolutely one of the best. Thank you!"

Gbengus O.

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"They were always on hand, communication so easy, and I could not speak more highly of them all. Now, the MVP has successfully launched. Agile development will continue, and the client is pleased with the results so far. K7 Tech maintains a well-organized task management style. They're a deadline-oriented, accessible team that excels at explaining technical concepts."

Sorcha F. CEO, TrainedIn

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"Communication was top-notch - definitely one of the best teams we worked with.From a technical and design standpoint, the team is very strong. Ultimately the project was delivered very close to original estimates, which is rare."

David J. - Co-Founder

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"Petar and his team are hands down the BEST freelancers I have worked with on this website! He was able to complete this project quickly and with very little guidance! His excellent communication and dedication to this project made every interaction a pleasure."

Alex M.

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"K7 Tech developed a responsive website along with technical solutions to help the company scale. They also provided consulting services. The business jumped from 15 customers to 90 thanks in part to K7 Tech's website."

Mike P. CTO, Data Aggregation Platform

Have an idea for an app? Let's talk about your project.

Contact Us

Office Address
Cara Lazara 5-7, 11000 Belgrade
Email us at:
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Successful cooperation with K7 Tech Agency means exchanging knowledge and experience to ensure we deliver the best possible products. We pay attention to every detail, from development to testing, taking into account every request you have before the final product goes onto your platform.

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