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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 offering good value for cost, with several clients noting that their pricing fits budgets while delivering quality work. Specific project costs range from $5,000 to over $192,000, indicating flexibility for different client sizes and needs.

    This summary is based on verified Clutch reviews.

    Most Common Project Size

    $10,000 - $49,999 based on 39 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 Client Recommendations

      Clients frequently recommend Onix-Systems for their expertise, reliability, and the value they provide. Their ability to integrate into client teams and deliver high-quality work is often highlighted.

    • Communication Challenges

      While many clients appreciate Onix-Systems' communication, a few noted language barriers and occasional miscommunications. Improving English proficiency, especially among developers, could enhance client interactions.

    • Strong Project Management

      Onix-Systems is consistently praised for their project management skills, with clients noting their responsiveness, ability to meet deadlines, and clear communication. They often go above and beyond to ensure project success, adapting to changes and providing regular updates.

    • Strong Adaptability to Client Needs

      Onix-Systems is noted for their adaptability, often tailoring their approach to meet specific client needs and project requirements. This flexibility is a key factor in their successful client engagements.

    • Dependable and Flexible

      Onix-Systems is recognized for their reliability and flexibility, often adjusting team composition and project scope to meet client needs. Their willingness to innovate and adapt is frequently highlighted as a key strength.

    • Effective Use of Agile Methodologies

      The company effectively employs Agile methodologies, allowing for flexibility and iterative progress. This approach aligns well with client goals and accommodates necessary changes efficiently.

    Onix-Systems Reviews

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    Services
    Project cost

    Web Development for Media Content Company

    • Web Development
    • Less than $10,000
    • Jan. 2023 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "Their depth of knowledge and ability to place the correct expert into the project as required are impressive."

    Aug 21, 2023
    Director of Operations, Media Content Company
    Anonymous
    Verified
    • Media
    • St. Louis, Missouri
    • 1-10 Employees
    • Online Review
    • Verified

    Onix-Systems has redesigned and redeveloped a website for a media content company. The project's goal is to refactor, update, and make the website more efficient.

    Web Dev & Design for Sports Video Production Company

    • Web Design
    • $10,000 to $49,999
    • July 2022 - Jan. 2023
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "Top company for a competitive price. Great people to work with."

    Feb 27, 2023
    President, Colorado Sports Video
    Heberto Limas-Villers
    Verified
    • Media
    • Denver, Colorado
    • 11-50 Employees
    • Online Review
    • Verified

    Onix-Systems was hired by a sports video production company to develop a new website that would automate most of their backend tasks. The team handled the design flow of the site and execution.

    Web App Dev for Fitness Company

    • Mobile App Development Web Development
    • $50,000 to $199,999
    • July 2022 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    “I’ve been most impressed by their level of communication and timelines.”

    Feb 7, 2023
    CEO, Eric Roberts Fitness
    Eric Roberts
    Verified
    • Other industries
    • Highland, Maryland
    • 1-10 Employees
    • Phone Interview
    • Verified


    Onix-Systems has built a mobile web app for a fitness company. They’ve used Figma and Vue.js to design and build the app from scratch, which allows users to complete workouts and log data points.

    Mobile App Dev & UI/UX Design for Fintech Startup Company

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

    “Everything Onix-Systems does is impressive, but their English level is their best asset.”

    Oct 11, 2022
    Co-Founder, COO & CPO, Fintech Startup Company
    Anonymous
    Verified
    • Business services
    • Makati City, Philippines
    • 1-10 Employees
    • Phone Interview
    • Verified

    Onix-Systems is the development partner of a fintech startup. They’ve helped them design and develop their banking app and admin portal using Java, Sprint Boot, Flutter, and Vue.js as the main technologies.

    E-Learning App Development for Software Development Firm

    • Custom Software Development Mobile App Development UX/UI Design
    • $50,000 to $199,999
    • May 2021 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0
    Jul 19, 2022
    CEO, Shmonster
    Michal Finegold
    Verified
    • Other industries
    • Greenwich, Connecticut
    • 1-10 Employees
    • Online Review
    • Verified

    Onix-Systems developed an e-learning app for a software development firm, incorporating data analytics, a backend for user registration, and web-based access. 

    Mobile App Dev for SaaS Company

    • Mobile App Development
    • $50,000 to $199,999
    • Jan. 2022 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    4.0
    Willing to Refer
    5.0

    "Their clear communication and quick response have resulted in efficient project management and completion."

    Jun 30, 2022
    Co-Founder, Penny
    Mary-Catherine McRoskey
    Verified
    • Advertising & marketing
    • San Diego, California
    • 1-10 Employees
    • Online Review
    • Verified

    Onix-Systems is helping a SaaS firm develop an iOS and Android mobile app based on the codes, app designs, and front- and backend logic they provided. The app features camera integration and third-party APIs.

    VR & AR Development for Web & VR Development Company

    • Custom Software Development
    • $10,000 to $49,999
    • Jan. - July 2022
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    4.5
    Willing to Refer
    5.0

    "They always have an elegant way of achieving the desired results."

    Jun 14, 2022
    Engineering Manager, Immersion 360
    Olivier Leprohon
    Verified
    • Other industries
    • Montreal, Quebec
    • 1-10 Employees
    • Online Review
    • Verified

    A VR firm has hired Onix-Systems for their dedicated VR and AR development resources. They provide customer projects for Onix-Systems to complete, split into tasks that are then executed in several revisions. 

    VR Development for Consulting Company

    • AR/VR Development Mobile App Development Web Development
    • Less than $10,000
    • June 2021 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    ''They’ve been doing everything right.''

    Jun 13, 2022
    Executive, Consulting Company
    Anonymous
    Verified
    • Other industries
    • Gaithersburg, Maryland
    • 1-10 Employees
    • Phone Interview
    • Verified

    A consulting company hired Onix-Systems to provide VR development. They're creating the unity base application for the project that the client is working on.

    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. 

     

    Showing 11-20 of 49 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
    43
    Overall Review Rating
    4.8
    Source
    Clutch
    Last Updated
    September 23, 2025

    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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