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We Provide Full Scope Mobile Development Expertise

Onix is a full-cycle software development company that builds well-suited solutions to drive company outcomes for startups, small and medium-sized businesses.

1100+  Successfully delivered projects
23+  Years of experience in software development
55+ Countries represented by clients
370+ Talented multi‑dimensional experts

  • Min project size
    $10,000+
  • Hourly rate
    $25 - $49 / hr
  • Employees
    250 - 999
  • Locations
    Kropyvnytskyi, Ukraine
  • Year founded
    Founded 2000
  • Languages
  • Timezones

2 Languages that we service

  • English
  • Ukrainian

38 Timezones that we service

ACT
Australia Central Time (ACT)
AGT
Argentina Standard Time (AGT)
AKST
Alaska Standard Time (AKST)
ART
(Arabic) Egypt Standard Time (ART)
AST
Arabia Standard Time (AST)
AET
Australia Eastern Time (AET)
BST
Bangladesh Standard Time (BST)
BET
Brazil Eastern Time (BET)
CAT
Central African Time (CAT)
CET
Central European Time (CET)
CNT
Canada Newfoundland Time (CNT)
COT
Colombia Time (COT)
CST
Central Standard Time (CST)
CTT
China Taiwan Time (CTT)
EAT
Eastern African Time (EAT)
EST
Eastern Standard Time (EST)
EET
Eastern European Time (EET)
GMT
Greenwich Mean Time (GMT)
GST
Gulf Standard Time (GST)
HST
Hawaii Standard Time (HST)
IDT
Israel Daylight Time (IDT)
IET
Indiana Eastern Standard Time (IET)
IST
India Standard Time (IST)
JST
Japan Standard Time (JST)
MET
Middle East Time (MET)
MIT
Midway Islands Time (MIT)
MST
Mountain Standard Time (MST)
NET
Near East Time (NET)
NST
New Zealand Standard Time (NST)
PNT
Phoenix Standard Time (PNT)
PRT
Puerto Rico and US Virgin Islands Time (PRT)
PST
Pacific Standard Time (PST)
PLT
Pakistan Lahore Time (PLT)
SAST
South African Standard Time (SAST)
SGT
Singapore Standard Time (SGT)
SST
Solomon Standard Time (SST)
UTC
Universal Coordinated Time (UTC)
VST
Vietnam Standard Time (VST)

3 Locations

  • Kropyvnytskyi , Ukraine
  • Poznań , Poland
  • Bratislava , Slovakia

Select Focus Area
Application Platforms
Linux server
40%
Amazon Application Development Framework
20%
Heroku
20%
Windows server
20%
AI Technologies & Models
Open AI GPT-3
40%
GPT-Neox
20%
AI2
10%
Deepmind Gopher
10%
Facebook OPT
10%
Hugging Face Bloom
10%
AR/VR Development Focus
DevOps Focus
DevOps CI/CD Services
20%
DevOps Consulting
20%
DevOps Maturity Audits
20%
Devops Assessment & Strategy Planning
20%
Release & Version Management
20%
Frameworks and CMS
Programming & Scripting
Objective C
10%
PHP
10%
Python
10%
Redux
10%
Ruby
10%
SQL
10%
Typescript
5%
Industries
Medical
25%
Financial services
15%
Education
10%
Hospitality & leisure
10%
Other industries
10%
Real estate
10%
Sports
10%
eCommerce
10%
Clients
Midmarket ($10M - $1B)
40%
Enterprise (>$1B)
30%
Small Business (<$10M)
30%

Pricing Snapshot

Min. project size $10,000+
Avg. hourly rate $25 - $49 /hr
Rating for cost 4.8 /5

What Clients Have Said

Onix-Systems is often praised for their good value for cost, with project investments ranging from $5,000 to over $192,000. Clients appreciate their transparency, responsiveness, and ability to deliver quality work on budget, though some noted occasional miscommunication.

This summary is based on verified Clutch reviews.

Most Common Project Size

$10,000 - $49,999 based on 40 reviews
< $10,000 $10,000 - $49,999 $50,000 - $199,999 > $200,000

Select a service to see pricing information

Onix-Systems Review Insights

Overall Review Rating

4.8
  • Quality 4.8
  • Schedule 4.8
  • Cost 4.8
  • Willing to Refer 4.8

Top Mentions

Review Highlights

  • Strong Technical Expertise

    Onix-Systems demonstrates strong technical skills across multiple frameworks and languages, including Java, Vue.js, and React Native. Their ability to solve complex technical challenges and innovate is widely recognized and praised by clients.

  • Innovative Solutions to Complex Challenges

    Onix-Systems' ability to deliver innovative solutions to complex challenges is highly regarded. Their technical prowess and problem-solving skills are key factors in their successful project delivery.

  • Effective Project Management

    Clients commend Onix-Systems for their organized project management, clear communication, and timely delivery. They maintain regular updates and are responsive to client needs, fostering a collaborative environment that enhances project success.

  • Challenges with Language and Communication

    Some clients have experienced language barriers and communication issues, leading to misunderstandings and project delays. This indicates an area where Onix-Systems could improve to ensure clearer and more effective communication.

  • Commitment to Customer Success

    Onix-Systems is praised for their dedication to customer success, with a culture of continuous improvement and a focus on delivering value. This commitment helps build strong client relationships and drives project success.

  • Diverse Industry Experience

    Onix-Systems has worked with a wide range of industries, including fintech, education, and healthcare. Their ability to adapt solutions to different sectors and understand specific business needs is a strong asset.

Onix-Systems Reviews

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Services
Project Cost
Industry
Location

Mobile App Dev for Educational Apps Company

  • Mobile App Development
  • $10,000 to $49,999
  • Mar. 2020 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"They never treat me as just another client; there’s a real effort being put into our relationship and into the work."

May 19, 2022
Founder & Director, Educational Apps Company
Anonymous
Verified
  • Education
  • United Kingdom
  • 1-10 Employees
  • Phone Interview
  • Verified

An educational apps company partnered with Onix Systems to rebuild one of their existing applications. The team has now developed two different iOS and Android apps.

UI/UX Design for Data Analytics Company

  • UX/UI Design
  • $10,000 to $49,999
  • Jan. - Mar. 2022
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"They provided us with amazing UI/UX design — it was exactly what we had envisioned."

Apr 10, 2022
Business Analyst, QoreNext
Gary Kwan
Verified
  • Other industries
  • Singapore
  • 11-50 Employees
  • Online Review
  • Verified

Onix-Systems designed the UI/UX of a data analytics company’s collaboration platform. After a thorough explanation of the client’s product, they created wireframes and the app’s prototype using Figma. 

 

Front End App Dev & UI/UX Design for Fin Tech Company

  • Mobile App Development UX/UI Design Web Development
  • $50,000 to $199,999
  • Mar. 2021 - Ongoing
4.5
Quality
4.5
Schedule
4.0
Cost
5.0
Willing to Refer
4.5

"Beyond their competency and straightforward execution of tasks, I like their flexibility." 

Apr 5, 2022
Head of Product, Fin Tech Company
Anonymous
Verified
  • Other industries
  • Zuerich, Switzerland
  • 1-10 Employees
  • Phone Interview
  • Verified

Onix-Systems provides ongoing software development, including UI/UX creation and frontend application development. They work in React Native and have delivered iOS and Android solutions as well. 

Software Development for Learning Software Company

  • Custom Software Development
  • Confidential
  • Oct. 2019 - Ongoing
4.5
Quality
4.5
Schedule
4.0
Cost
4.0
Willing to Refer
5.0

"They’ve been diligent and have good technical individuals in their team."

Feb 2, 2022
Executive, Learning Software Company
Anonymous
Verified
  • Other industries
  • United Kingdom
  • 201-500 Employees
  • Phone Interview
  • Verified

A learning software company hired Onix-Systems to provide software development. Their efforts involve front- and backend development, along with data aggregation for multiple training platforms.

UI/UX Design for Data Science & PostgreSQL Company

  • UX/UI Design
  • $50,000 to $199,999
  • Feb. 2020 - Feb. 2021
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"The project was very well treated by the team."

Jan 31, 2022
PostgreSQL Expert, CYBERTEC
Pavlo Golub
Verified
  • Other industries
  • Austria
  • 51-200 Employees
  • Online Review
  • Verified

A PostgreSQL database company hired Onix-Systems to design the UI/UX of their platform. The team used React.js on the frontend and Node.js on the middleware, designing and implementing the UI section by section.

Website & App Redesign for Gaming Platform

  • Web Development
  • $50,000 to $199,999
  • June - Dec. 2021
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"They always went above and beyond and really viewed themselves as an extension of our company's team."

Jan 12, 2022
CEO, Bracketology, LLC
Jonah Fialkow
Verified
  • Gaming
  • Chicago, Illinois
  • 1-10 Employees
  • Online Review
  • Verified

A fantasy gaming platform hired Onix-Systems, LLC to redevelop their website and application. The team did large-scale work on AWS and delivered a completely repackaged design for the project.

iOS App Development for Beauty Company

  • Mobile App Development
  • Confidential
  • Feb. 2020 - Mar. 2021
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"We value their availability, flexibility, and eagerness to do their best in what they do."

Dec 3, 2021
CTO, Beauty Company
Anonymous
Verified
  • Other industries
  • San Diego, California
  • 11-50 Employees
  • Online Review
  • Verified

Onix-Systems, LLC developed an iOS app for a beauty company. Their goal was to develop the app as fast as possible while keeping it reliable and bug-free.

Web Dev & UI/UX Design for Alcohol Brand

  • UX/UI Design Web Development
  • Less than $10,000
  • Feb. - Apr. 2021
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"Onix-Systems was already helping me out with different problems without me even paying them."

Jun 3, 2021
Owner, SQEEZ
LaRoy Richardson
Verified
  • Other industries
  • Washington, District of Columbia
  • 11-50 Employees
  • Phone Interview
  • Verified

An alcohol brand hired Onix-Systems, LLC to build and develop a user-friendly website. They were also responsible for designing the layout and logo of the company.

Web Dev for Paddle Tennis Education Platform

  • Web Development
  • $10,000 to $49,999
  • June 2020 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"We are impressed with their professionalism and transparency in their work."

Feb 9, 2021
CEO, MiPaddle
Mark Innes
Verified
  • Education
  • New York City, New York
  • 1-10 Employees
  • Online Review
  • Verified

Onix-Systems, LLC was hired by a paddle tennis educational platform to produce a website and maintain it after. The main objective is to manage end users and continuously update the content of the site.

UI/UX Design Projects for IT Outsourcing Company

  • Other Design UX/UI Design
  • $50,000 to $199,999
  • Jan. 2020 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"The fact that we continue to send work their way speaks volumes about their quality of work."

Feb 4, 2021
Strategist, Aloa
David Pawlan
Verified
  • Other industries
  • Chicago, Illinois
  • 1-10 Employees
  • Online Review
  • Verified

Onix-Systems, LLC was hired by an outsourcing company to collaborate with them on several software development projects. The team is tasked to generate applications using UI/UX designs and existing templates.

Showing 21-30 of 53 Reviews

Our Story

Onix was founded in 2000 by three technology enthusiasts: Roman Serebryakov, Edward Prykhodkin, and Dmitry Durach.

Onix has always focused on building honest, transparent relationships with customers. We prioritize the evolving, unique customer nee

The executives’ goal is to secure Onix’s membership in the global business community and our status as a reliable and profitable partner. The executive team guides Onix with a focus on consistent excellent customer experience and continuous education.

What Sets Us Apart

Openness

Transparent, client-first partnership. We keep the process open, guard your IP, adapt to evolving needs, and work comfortably across time zones—so delivery stays clear, flexible, and aligned from discovery to release.

Support

Learning-led excellence since 2000. From 8 engineers to 370+ specialists, we’ve grown profitably and steadily. We invest in continuous education and emerging tech, so your product benefits from proven craft and fresh ideas.

Uniqueness

Values you can feel. We embrace new ideas, appreciate creativity, respect every voice, and support growth. That culture—plus global experience—creates teams that care, stay reliable, and build long-term results with you.

Clutch verification provides an additional layer of data to help you make the right purchasing decision of business services.

Learn More
Verified Client Reviews
46
Overall Review Rating
4.8
Source
Clutch
Last Updated
June 22, 2026

Business Entity

Business Entity Name Onix-Systems Limited Liability Company
Source Youcontrol
Jurisdiction of Formation Ukraine
Date of Formation December 25, 2001
Status Active
Last Updated March 31, 2022
ID 31774976

Credit Report Results

Clutch was unable to obtain a credit report for this company. However, Clutch performed additional verification on this company and confirmed that there are no negative legal filings or large outstanding debts. This company has also received 3 or more verified reviews on our platform.

Learn More About The Clutch Verification Process

Locations (3)

Tarasa Karpy St, 76 KropyvnytskyiUkraine 25000

301 - 400

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