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Mobile development services

Thanks to our vast experience in mobile app development, our team provides productive and innovative digital solutions. To create cost-effective and modern applications, we use React Native and Flutter. These technologies allow us to provide our customers with flawless and scalable products.

Our Values

With our mobile development services, we create a custom application. Owing to a well-designed architecture, the application can easily handle a growing user base without sacrificing performance or the quality of the user experience.
Our first-class developers provide a highly stable product. Through the use of quality assurance and DevOps services, all applications are sustainable.
We conduct compatibility, usability, performance, security, and speed testing to deliver lightweight and fast mobile digital solutions that retain users and drive revenue.
Thoughtful architecture
Thoughtful architecture
Highly skilled architects create a well-designed infrastructure that will handle the scaling, traffic load, and advanced functionality of your mobile solution perfectly.
Small bundle size
Small bundle size
A professional team delivers a digital product of a reasonable size so that users can easily download and view your app. This will enhance user experience and reduce the rate of failures.
Yojji builds mobile solutions according to the requirements that the Google Play Store and Apple App Store provide. Therefore, all applications go through moderation seamlessly.

React Native is a perfect option for building various types of mobile applications.

We have deep expertise in JavaScript, so in many cases, we use React Native in mobile development. Using React Native, we are in our element. Our specialists combine this technology with back-end development based on Node.js, front-end development, product design, and testing to develop applications based on React Native.

When is it reasonable to use React Native in mobile development? There is no one-fits-all solution, and the decision to use one or another technology is made on a case-by-case basis. Therefore, you can contact our mobile development company directly. We will study in detail your requirements and the specifics of the project, and answer all your questions. However, some clear React Native winners include:

Cross-platform development


Streamlined UI

Native APIs

Are you still not sure if it is React Native that you need?

Contact our seniors so that you can get detailed advice on how to proceed with your project

We also use Flutter

For our company, Flutter is a great choice when it comes to crafting highly functional applications with a custom user interface of any complexity. Flutter is completely free and offers open-source code. Therefore, this framework reduces product development time and time to market. Besides, Flutter-based applications have perfect performance and are fast, so this framework is a win-win option for startups that want to test their business model.

However, note that Flutter is not a magic bullet for all problems, so only a professional company will be able to help you choose the right technology for each specific case.

Apps Built with Flutter:

Google Pay


Google Ads






Team involved: Project manager, Business analyst, Software architect

This phase involves creating a business strategy and a plan of use cases, analyzing business risks and functional requirements to prevent any issues and inconsistencies that may occur during development and while scaling. Our developers plan and implement an efficient digital solution. As a result, an interactive mockup of a mobile app is created, and the final UX/UI is approved by the client with the participation of our specialists.
  • All-round business analysis
  • Identifying the technology stack for an app development initiative
  • Budget allocation for better results
  • Demonstration of what a future app will look like
  • Building a solid basis for further scaling

Web Design & Front-end Development

Web Back-end Development

Manual and Automated QA


Our mobile development solutions

Creating a Cross-platform Application

Yojji leverages various tools to deliver software that can be compiled for each platform. Our professional team pays special attention to platform-specific attributes and device-specific features to deliver a mobile application that expands your business, builds more user engagement, and drives a new revenue stream.

App Conversion to Another Platform

We gather all the necessary requirements, optimize an existing app, and use highly effective tools to port a mobile app from one platform to another. Then we test the application to eliminate all drawbacks before a mobile solution will be transported to an operational system. Thus, our professional team provides easy conversion from one target platform to another.

App Enhancement Services

Yojji integrates app enhancement services to manage, streamline, improve system performance and boost app stability and continuity. Our company enhances an application by expanding the functionality and refining the user interface. Therefore, you get upgraded and effective solutions as soon as possible.

App Support

Our highly professional team ensures that the application functions properly on specific platforms and supports all the necessary features. With each update, we make inherent changes that improve stability, security, privacy, and user interaction with the system.

How we work

Custom development

Our cutting-edge services add value to your company, help automate processes, and increase productivity and revenue. Besides, we partner with startups and bring their ideas to life.
QA testing

Dedicated team

Yojji has a diverse pool of talents with deep technical expertise that focuses on the business’s goals and requirements. Our team provides high-quality deliverables on time and within budget and increases performance.
The pool of the best talents
Full-time dedication
Fast start
Work in team

Staff augmentation

If you require additional skillful resources to cooperate with your in-house development team, our highly experienced professionals are ready to bring their skills to the table and fill certain skill gaps.
The pool of the best talents
Full-time dedication
Fast start

Grow your Business

We provide a full range of mobile app development services

You can get comprehensive information about the business and technical aspects of cooperation by ordering a free call with our client relationship manager. We are always open to dialogue, so don’t hesitate to contact us to share your ideas, business vision, and requirements. We will digitize your business, attract new customers, and help you launch innovative products.


Investment application

Mobile development • UI/UX

Workforce Management Solution

Web development • QA

Social Network App

Web development • Mobile development

Clients testimonials

We do our best to ensure that the client is always satisfied with the results we deliver.

The client considers Yojji a fully integrated part of their team. Their resources show a high level of skill, professionalism, and organization. They participate in daily meetings, are able to work independently, and can offer input on project scopes when asked.

Noam Nevo
Co-founder of OSU

Yojji has delivered an accessible product with thorough consideration for the client's requirements. Users have commented on the platform's user-friendliness and speed. Moreover, the team is easy to communicate with and provides frequent updates. Their development and design skills are impressive.

Lisa Ross
VP of Experience & Tech, Avenue
full starfull starfull starfull starfull star

Yojji was an instrumental part of the client’s team, working closely with them to achieve the product’s success. The team was very collaborative and timely, and their performance was amazing. Additionally, their resources were experienced, professional, and enjoyable to work with.

Alon Zion
Former Co-Founder
full starfull starfull starfull starfull half


Cloud-based solution for small, mid-sized, and large companies to manage payroll around the world.



We have extensive experience in building secure and client-friendly mobile banking software, custom payment solutions, and digital solutions for fintech enterprises that make them recognizable in the Fintech industry.
Health care

Health care

We develop effective healthcare applications that simplify personal healthcare management, optimize various operations, increase workload efficiency, and improve customer service.


Success-driven specialists build various e-learning platforms with lean design, excellent functionality, and an emphasis on learners. All solutions are scalable, advanced, and intuitive.


Yojji develops leading-edge digital products that cater to the unique needs of legal practice. By leveraging innovative solutions, legal specialists can productively manage various stages of litigation.


Yojji implements travel projects that are designed to improve service quality and streamline workflow. Whether it’s navigation, trip planning, or handy tools for tour operators, Yojji will bring any idea to life.

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Yojji has a diverse pool of talents with deep technical expertise that focuses on the business’s goals and requirements. Our team provides high-quality deliverables on time and within budget.
Test Documentation


We can provide you with front-end & back-end developers, QA specialists, designers, and managers who will integrate into your SDLC and support your

Frequently asked questions

If any of the questions haven’t been covered yet, in this section, you may probably find the answers.

How long does the web development process last?
The development time for a web application depends on the customer’s requirements, the complexity of the application, the number of required functions, and the testing process. Contact us, tell us about the goals of your business project, and we will provide you with information about the duration of the development process.
How much does it cost to make an application?
The cost of an application depends on its complexity, type, requirements, and feature set. Upon request, we will provide you with information on the approximate cost of development.
Why should I choose Yojji web development services?
We think big and work hard to deliver top-notch web solutions that help your business grow. Here is a brief explanation of why you should partner with Yojji if your ultimate goal is to get a highly functional and scalable web product.

  • - We are flexible and are always ready to tailor the entire process to your business requirements.
  • - We ensure that the product has high performance and is highly secure.
  • - We offer customized web development. Besides, we offer an option to pay only for those functions that you require so that you do not exceed your budget.
  • - Thanks to the Agile approach, we work as effectively as possible.
Do you need more information?
We are always open to discussion, so if you have any questions, don’t hesitate to contact us.

Have an idea?
Let’s work together


Fill out contact form or call us. We’ll set a call or in person meeting for free consultation

Let’s do a first step


We discuss your project even if you have just an raw idea


We choose a model and approach that are suitable for your case and budget

Meet up in person

NL, Amsterdam

Ildar Kulmuhametov
Ildar Kulmuhametov
CEO, Co-Founder

USA, Austin

Yevhen Piotrovskyi
Yevhen Piotrovskyi
CTO, Co-Founder

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About Yojji Software Development Company

Do you want to outsource software development? It’s a great idea. Here are the reasons why.

Profitable business solution

The main point of outsourcing is that you pay less for similar services. You can find excellent specialists in Ukraine who offer excellent quality at a competitive cost. Therefore, a startup can save a lot of money. Yojji can take over the development of your startup and create a first-class product in the shortest possible time.

Fast product launch

If you distribute your time and workload correctly, you will have the necessary amount of time to work on strategic product development and marketing, while the technical part of the project will be handled by a third party.

Talent pool

Sometimes a startup faces a shortage of qualified staff, so you can hire a top-notch specialist from a country that offers some of the largest IT hubs. According to statistics, over 192,000 IT professionals and 1,600+ IT companies are located in Ukraine. Cooperating with developers from Ukraine, you can be 100% sure of the quality of work.

High quality of the finished product

One of the undeniable advantages of cooperating with a reliable team is their experience in launching startups and professionalism in terms of hard skills and soft skills. When you work with a reliable company like Yojji, you can be sure of the quality of the final product.