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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

No have been added yet...

    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 perceived as providing excellent value for cost, with many clients noting competitive pricing and high-quality deliverables. Specific project costs range from $5,000 to over $192,000. Clients frequently highlight their strong communication, adaptability, and ability to meet deadlines effectively.

    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 is recognized for its deep technical knowledge across various frameworks and technologies, including React Native, Vue.js, and Flutter. Clients value their ability to tackle complex technical challenges effectively.

    • High-Quality Design and UI/UX

      The design capabilities of Onix-Systems are frequently praised, with clients highlighting their ability to create visually appealing and user-friendly interfaces that enhance user engagement and satisfaction.

    • Flexibility and Adaptability

      Clients appreciate Onix-Systems' flexibility in adapting to changing project requirements and their ability to scale resources as needed. This adaptability contributes to successful project outcomes.

    • Proficient in Custom Software Development

      Onix-Systems is praised for its expertise in developing tailored software and web applications across industries like wellness, virtual reality, and fintech. Clients appreciate their ability to deliver customized solutions that meet specific business needs.

    • Successful Long-Term Partnerships

      Onix-Systems has established long-term partnerships with several clients, who continue to rely on their services for ongoing development and support due to their reliable performance and expertise.

    • Challenges with Communication

      Some clients reported communication issues, citing language barriers and misunderstandings as challenges. This highlights an area for improvement to ensure smoother collaboration and clearer expectations.

    Onix-Systems Reviews

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    Services
    Project Cost
    Industry
    Location

    Custom Software Dev for Wellness Company

    • Custom Software Development Other Application Development Web Development
    • $10,000 to $49,999
    • Aug. 2025 - Feb. 2026
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "The overall quality of work, communication, and technical expertise clearly exceeded our expectations."

    Feb 9, 2026
    CEO, MyWellness Südtirol
    A. K.
    Verified
    • Other industries
    • Bolzano, Italy
    • 1-10 Employees
    • Online Review
    • Verified

    Onix-Systems developed a web platform using a Next.js template as the technical foundation for a wellness company. The team customized the template, created the frontend and backend, and integrated a CMS.

    UX/UI Design for VR App Dev Company

    • AR/VR Development Application Testing UX/UI Design
    • $10,000 to $49,999
    • Feb. - Apr. 2025
    5.0
    Quality
    5.0
    Schedule
    4.5
    Cost
    5.0
    Willing to Refer
    5.0

    "Everything was always on time and within budget with consistently exceptional communication."

    May 8, 2025
    Founder & Director, Livelens
    James McAllister
    Verified
    • Arts, entertainment & music
    • United Kingdom
    • 1-10 Employees
    • Online Review
    • Verified

    Onix-Systems developed a virtual reality app's MVP. The team worked on the app's user flow, UI, user journey, onboarding, event booking, and more.

    Custom Software Dev for Stock Market Solutions Company

    • API Development Custom Software Development DevOps Managed Services
    • $200,000 to $999,999
    • Nov. 2023 - Ongoing
    1.0
    Quality
    0.5
    Schedule
    0.5
    Cost
    2.5
    Willing to Refer
    0.5

    "We would strongly caution others against engaging with this firm based on our experience."

    Apr 24, 2025
    Co-Founder, Stock Market Solutions Company
    Anonymous
    Verified
    • Other industries
    • Hollywood, Florida
    • 11-50 Employees
    • Online Review
    • Verified

    Onix-Systems has been hired by a software company to develop a feature-rich, real-time stock market solution. The team has been tasked with delivering a stable, scalable backend and stable frontend code.

    Branding & UX/UI Design for Sneaker Marketplace

    • Branding UX/UI Design
    • Less than $10,000
    • Nov. 2024 - Jan. 2025
    4.5
    Quality
    5.0
    Schedule
    5.0
    Cost
    4.0
    Willing to Refer
    5.0

    "They are very professional, deliver work to a high standard, and are of great value for money."

    Mar 26, 2025
    Executive, The Sole Supplier
    Anonymous
    Verified
    • Media
    • United Kingdom
    • 11-50 Employees
    • Online Review
    • Verified

    Onix-Systems provided UI/UX design and branding services for a sneaker marketplace. The team designed a user flow and wireframes for the client's product and created brand guidelines and identity.

    Web Development for Flight Deal Source Co

    • Web Development
    • Confidential
    • Feb. 2024 - Feb. 2025
    4.0
    Quality
    4.0
    Schedule
    4.0
    Cost
    4.0
    Willing to Refer
    4.0

    "They consistently address challenges with efficiency and professionalism."

    Mar 25, 2025
    Founder, Secret Flights Ltd
    Yaneev Lanis
    Verified
    • Other industries
    • Tel Aviv, Israel
    • 1-10 Employees
    • Online Review
    • Verified

    Onix-Systems developed a WordPress frontend for a flight deal source company. The team updated and modified plug-ins, themes, and integrations, fixed bugs, and performed maintenance.

    DevOps Services for Software Company

    • Custom Software Development DevOps Managed Services
    • Confidential
    • May 2014 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "They have an amazing culture of continuous improvement and an obsession with customer success!"

    Mar 12, 2025
    Head of Product, Software Company
    Anonymous
    Verified
    • Other industries
    • San Francisco, California
    • 51-200 Employees
    • Online Review
    • Verified

    Onix-Systems provides DevOps services for a software company. The team handles CI/CD, cloud infrastructure, and app development, primarily in Python. They manage the client's DevOps function and organization.

    Website Development for Design Agency

    • Application Testing Custom Software Development Web Development
    • Less than $10,000
    • Nov. - Dec. 2024
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "Onix-Systems’ technical expertise and commitment to delivering a high-quality product were truly impressive."

    Dec 19, 2024
    Project Manager, Gapsy Studio
    Anonymous
    Verified
    • Other industries
    • Ukraine
    • 11-50 Employees
    • Online Review
    • Verified

    Onix-Systems developed a website for a creative design agency. The team created a responsive site with a CMS, integrated custom animations, and optimized the site's performance to ensure fast loading times.

    VR Development for Creative Agency

    • AR/VR Development
    • Confidential
    • Sep. - Nov. 2024
    5.0
    Quality
    5.0
    Schedule
    4.5
    Cost
    5.0
    Willing to Refer
    5.0

    "Onix-Systems was able to touch on the essence of our question and interpret our needs well."

    Nov 26, 2024
    Owner, Director & Photographer, First on Mars
    Herman Poppelaars
    Verified
    • Other industries
    • Amsterdam, Netherlands
    • 1-10 Employees
    • Phone Interview
    • Verified

    Onix-Systems provided VR development services for a creative agency's end client's product presentation. The team was responsible for designing 60 seconds of 360-degree animations for a two-minute video.

    Web & Mobile App Dev for Event Marketing & Production Firm

    • Mobile App Development UX/UI Design Web Development
    • $50,000 to $199,999
    • Feb. 2024 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "The level of communication felt as though they were an extension of our team."

    Nov 19, 2024
    CEO, Bar Crawl Nation LLC
    Peter Altholz
    Verified
    • Arts, entertainment & music
    • Boca Raton, Florida
    • 1-10 Employees
    • Online Review
    • Verified

    Onix-Systems provides website and mobile app development for iOS and Android for an event marketing and production firm. The team has fixed bugs, added new features, and improved the UI/UX design.

    Showing 1-10 of 51 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
    45
    Overall Review Rating
    4.8
    Source
    Clutch
    Last Updated
    February 12, 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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    Onix-Systems

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    Onix-Systems Logotype

    Tatiana Kermach

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