We help you create



Our Mission Your profit and satisfaction guide us together with quality and mobile technologies. Our goal is to make app development easy and simple for you


We help you conquer and dominate the world by creating high-quality native apps for iOS and Android. To establish your app’s positions we also do breathtaking UI/UX designs and web-based backends as solid as a rock.


Our developers have been working on mobile apps since the very beginning of the iPhone era. Altogether we have successfully created over 60 apps.


We enjoy creating quality apps. Our company embraces the philosophy of ROWE (result-oriented working environment). Results are always rewarded no matter how much time was spent in the office.


We are good at establishing and maintaining good communication with our customers. We believe in honesty. If we make a mistake, we own up to it and make up for it.

Apps by Us Concentration of ideas, tons of energy and hard work for users to love and enjoy


NPS Places

A tourist guide in a series of apps for the US National Parks with maps, geolocation, extensive information and an exciting on-site game.


Holocaust Memorial
Miami Beach

Application for the visitors of Holocaust Memorial in Miami Beach landmark. Works with iBeacons installed on-site, contains lots of interactive materials and supports mutiple languages.



One of the apps we are most proud of, Beat is a mobile client for a large Norwegian subscription-based music streaming service with rich UI animations and incredible numbers of songs and artists, which can even be used as a remote control for other Beat-devices.



Amusing app for learning English, which is one of the top apps in Education category on App Store. It features around 20 mini-games, a lot of customizable and shareable content and has social networks integration.

Our Clients Say Your feedback is precious and you will always be heard


Ray Bhandari

Neem Labs Inc.

I recommend working with Factorial Complexity to all my friends. They were a dedicated partner on the project, anticipating problems and recommending solutions. Also, communication during the project was clear, direct and effective. The quality of our apps not only surpassed our expectations but also were innovative in ways we couldn't have thought of on our own and we have Vitaliy and his team to thank for that.


Mila Servantes

Alligator Apps

Working with Vitaliy and his team has been a great experience. I have developed over 20+ iOS apps with Factorial Complexity and continue to work with them on an ongoing basis. I have tried many teams from all over the world and Factorial Complexity is the best in terms of delivering high quality on time and on budget. Vitaliy is very professional and a great communicator. One of the best development teams I have had the pleasure of working with.


Thomas Prestgaard

Afternorth Ltd.

Factorial Complexity has been an integral part of the development of our business. They always deliver work beyond expectations in a timely manner. Communication is easy because they are fluent in English. One of my favorite things about them is that they don't just deliver what we order; they also contribute with ideas and care about creating great apps.


Michael Lapico

Touch Village

Thanks for all your hard work! The project went smoothly and up to our standards. Your technical skills are excellent and I look forward to working with you in the future!


Helmer Wieringa


Factorial Complexity is full heartedly recommended, they combine many high level skills: visual and interaction design, project management and they go for maximal usability. Are up-to-date regarding the constantly changing app technology, a pleasure to work with!


Karen Brown

Shiznay Creative Pty Ltd

We would definitely recommend working with Factorial Complexity. They are professional, competent and reliable. Work was completed to a high standard, and the team helped guide us through parts of the process that were new to us. Communication is key in the development process and the whole team at Factorial Complexity are excellent with communicating. We will continue working with Factorial Complexity for future projects.


Sallycast Incorporated

We can highly recommend working with Factorial Complexity. They are reliable and do very high quality development work. From project kickoff all the way through completion, we always felt like Factorial Complexity was interested in helping us achieve our goals. This included thorough communication to understand our needs, as well as making recommendations to improve the process that we would not have come up with on our own.

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