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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 praised for providing good value for cost, with competitive pricing and effective project management. Clients report satisfaction with deliverables, responsive communication, and flexibility, though some projects experienced minor miscommunications. Overall, they are viewed as a reliable partner for various development needs.

    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

    • Impressive Project Management

      Onix-Systems is commended for their strong project management skills. Clients highlight their transparency, flexibility, and ability to deliver projects on time and within budget. Their effective communication and proactive approach to managing projects ensure smooth workflows and timely updates.

    • Successful Launches and Market Impact

      Clients report successful product launches and positive market impact as a result of Onix-Systems' work. Products developed by Onix-Systems have received high ratings and positive user feedback, contributing to business growth and user engagement.

    • Strong Technical Competence

      Reviews frequently mention Onix-Systems' deep technical expertise across various domains, including front-end and back-end development, DevOps, and mobile app development. Their ability to tackle complex technical challenges and deliver innovative solutions is highly valued by clients.

    • High Customer Satisfaction

      Many clients express satisfaction with Onix-Systems' work, noting that they meet or exceed expectations. The company is praised for delivering high-quality products and maintaining strong client relationships, which leads to repeat business and long-term partnerships.

    • Flexibility and Adaptability

      Onix-Systems is praised for their flexibility in adapting to changing project requirements and client needs. They are willing to adjust their resources and timelines to accommodate new requests, ensuring that projects remain on track and meet client expectations.

    • Challenges with Language and Communication

      Some clients have experienced language barriers and communication challenges with Onix-Systems. While project managers are generally fluent in English, there have been instances where technical team members struggled with language, leading to misunderstandings and delays.

    Onix-Systems Reviews

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    iOS Mobile App Dev. for Messaging Service Platform

    • Custom Software Development
    • $50,000 to $199,999
    • Dec. 2016 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    “Their outstanding ability to solve extreme technical challenges distinguishes them from their competitors.”

    Mar 30, 2018
    CEO, messageLOUD
    Garin Toren
    Verified
    • Arts, entertainment & music
    • Albany, New York
    • 11-50 Employees
    • Phone Interview
    • Verified

    Onix-Systems used an existing wireframe to create an iOS app that reads aloud messages as they’re received. They’ve developed the backend of the app. Currently, they’re building a public beta version.

    Coding for Fitness Startup

    • Web Development
    • $10,000 to $49,999
    • Jan. 2016 - Ongoing
    4.0
    Quality
    4.0
    Schedule
    4.5
    Cost
    3.5
    Willing to Refer
    4.5

    "From what I've seen, the code produced by Onix was very clean and efficient."

    Sep 13, 2016
    Co-owner, Fitness Startup
    Anonymous
    Verified
    • Other industries
    • Montreal, Quebec
    • 1-10 Employees
    • Phone Interview
    • Verified

    Onix-Systems is engaged to create a strong coding base for the client's core platform allowing users to access videos and information.

    Coding for Web Application Company

    • Web Development
    • $200,000 to $999,999
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "We receive Onix's full attention even on smaller projects, where they're not making much profit. Onix has a very consistent approach and responsiveness."

    Sep 13, 2016
    Owner, Web Application Company
    Anonymous
    Verified
    • Other industries
    • Los Angeles, California
    • 11-50 Employees
    • Phone Interview
    • Verified

    Onix-Systems is currently partnering with a software company long-term to develop custom software products that are as profitable as possible.

    Custom App Development for Wine Business

    • Mobile App Development
    • $10,000 to $49,999
    • Sep. 2015 - Ongoing
    4.5
    Quality
    5.0
    Schedule
    4.5
    Cost
    4.0
    Willing to Refer
    5.0

    "We are satisfied with Onix's work ... They were able to review issues and provide feedback, instead of simply doing what we asked for."

    Sep 7, 2016
    Owner, Wine Retailer
    Anonymous
    Verified
    • Other industries
    • United Kingdom
    • 1-10 Employees
    • Phone Interview
    • Verified

    Onix-Systems partnered with a small wine retailer in the UK to develop the core mobile application to grow the firm's user base and revenue.

    Offshore Development for Canadian Agency

    • Mobile App Development
    • $10,000 to $49,999
    • Mar. - May 2016
    5.0
    Quality
    4.5
    Schedule
    4.5
    Cost
    5.0
    Willing to Refer
    4.5

    "We were satisfied with Onix's performance, and would consider hiring them again."

    Sep 2, 2016
    CTO, Canadian Agency
    Anonymous
    Verified
    • Other industries
    • Montreal, Quebec
    • 1-10 Employees
    • Phone Interview
    • Verified

    Onix-Systems was engaged by a development agency to deliver a non-native mobile application for the end client using AngularJS and PHP technologies.

    Platform Development for Software Startup

    • Custom Software Development
    • $50,000 to $199,999
    • Aug. 2013 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "On a scale from 1 to 10, I would give Onix a 15. I'm very happy with their work."

    Aug 30, 2016
    Founder, CEO, Software Startup
    Anonymous
    Verified
    • Advertising & marketing
    • Israel
    • 11-50 Employees
    • Online Review
    • Verified

    Onix-Systems was engaged by an Isreaeli online marketing agency to develop their website architecture with the goal of growing their incoming business.

    Software Development for Online Marketing Platform

    • Custom Software Development
    • $200,000 to $999,999
    • Sep. 2007 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "Onix-Systems is extremely reliable, hard working, and intelligent."

    Sep 14, 2015
    CEO, ROI Genius
    Anonymous
    Verified
    • Information technology
    • San Francisco, California
    • 11-50 Employees
    • Phone Interview
    • Verified

    Onix-Systems partners with an IT company to work on complex projects in two development areas: enterprise business system platforms and creating a standard development kit for social robotics.

    Web App Development & Design for Tour Operator Company

    • Other Application Development UX/UI Design Web Development
    • Confidential
    • Apr. 2025 - Feb. 2026
    5.0
    Quality
    4.5
    Schedule
    5.0
    Cost
    4.0
    Willing to Refer
    5.0

    "Their ability to quickly understand our needs and translate them into effective solutions was impressive."

    Feb 12, 2026
    Executive, Exit Reizen
    Anonymous
    Verified
    • Other industries
    • Netherlands
    • 11-50 Employees
    • Online Review
    • Verified

    Onix-Systems designed and developed a web app for a tour operator company. The team built a solution to streamline operations across departments, improve workflow efficiency, and centralize reporting.

    Comprehensive UI/UX Design for Healthcare AI Tools Co

    • UX/UI Design
    • Confidential
    • Apr. - Sep. 2025
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "We were impressed with Onix-Systems' designs."

    Sep 23, 2025
    Manager, AI Driven HC Solutions, LLC
    Anonymous
    • Other industries
    • Atlanta, Georgia
    • 1-10 Employees
    • Online Review

    Onix-Systems provided UI/UX design services for a healthcare AI tools company. The team designed web and mobile screens for eight main user flows, including the login, onboarding, and registration processes.

    Custom Software Development for Software Engineering Company

    • AI Development Custom Software Development
    • Confidential
    • Nov. 2024 - Feb. 2025
    5.0
    Quality
    4.5
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "The company masters a wide range of programming frameworks and languages."

    Mar 27, 2025
    Founder & AI Engineer, Software Engineering Company
    Anonymous
    Verified
    • Other industries
    • Montreal, Quebec
    • 1-10 Employees
    • Online Review
    • Verified

    Onix-Systems provided custom software development for a software engineering company. The team customized a Laravel AI template to add some AI agents functionality and deployed the application to production.

    Showing 31-40 of 52 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
    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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