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Blockchain | DeFi | NFT | Startups

We’re a group of unanimous blockchain enthusiasts who earned their place with countless hours of hard work and extreme passion to the field of their experience. By carefully picking developers for each of your projects, we become a vital part of your team, like partners in spirit. We deliver you unconventional solutions, becoming a trusted supplier that you can always rely on.
Our desire to stick to one field gives us an unmatched advantage to be on top of all the newest technologies. We might already know the solution for something you just heard about.

  • Min project size
    $10,000+
  • Hourly rate
    $25 - $49 / hr
  • Employees
    10 - 49
  • Locations
    L'viv, Ukraine
  • Year founded
    Founded 2017
  • Languages
  • Timezones

2 Languages that we service

  • English
  • Ukrainian

3 Timezones that we service

CET
Central European Time (CET)
UTC
Universal Coordinated Time (UTC)
CNT
Canada Newfoundland Time (CNT)

1 Locations

  • L'viv , Ukraine

No have been added yet...

    Pricing Snapshot

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

    What Clients Have Said

    K.R.O.K offers competitive pricing, with project costs ranging from $10,000 to $49,999. Clients emphasize good value for cost, high-quality deliverables, and effective communication, suggesting they deliver quality work efficiently and within budget.

    This summary is based on verified Clutch reviews.

    Most Common Project Size

    $10,000 - $49,999 based on 9 reviews
    < $10,000 $10,000 - $49,999 $50,000 - $199,999 > $200,000

    Select a service to see pricing information

    K.R.O.K Review Insights

    Overall Review Rating

    5.0
    • Quality 4.9
    • Schedule 5.0
    • Cost 5.0
    • Willing to Refer 5.0

    Top Mentions

    Review Highlights

    • Excellent Communication and Responsiveness

      K.R.O.K is noted for their clear and effective communication. Clients value their responsiveness and the seamless communication process, which often includes direct access to the company owner.

    • Strong Project Management

      Clients commend K.R.O.K for their organized project management, timely deliverables, and transparency. They effectively use virtual meetings and regular updates to keep clients informed and involved.

    • Impressive Problem-Solving Skills

      Clients highlight K.R.O.K's ability to tackle challenging technical issues and provide innovative solutions, demonstrating deep technical expertise and dedication to problem-solving.

    • Value for Cost

      K.R.O.K is recognized for offering excellent quality at competitive prices. Clients appreciate the value they receive in terms of cost-effectiveness and quality of service.

    • Potential Improvement in Communication Processes

      While generally effective, one client noted an initial need for clearer communication and a more structured process, which was addressed promptly after discussion.

    • Blockchain Expertise and Technical Skills

      K.R.O.K's proficiency in blockchain development, particularly with Solana and Rust, is highly praised. Clients appreciate their ability to handle complex smart contract integrations and deliver high-quality solutions efficiently.

    K.R.O.K Reviews

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    Services
    Project cost

    Blockchain Dev for Blockchain Company

    • Custom Software Development
    • $50,000 to $199,999
    • July - Oct. 2018
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "They delivered very high quality in every category."

    Sep 7, 2022
    Co-Founder & CEO, Divi Project
    Geoffrey McCabe
    Verified
    • Financial services
    • San Jose, Costa Rica
    • 11-50 Employees
    • Online Review
    • Verified

    Taking over a project from a previous vendor that didn't deliver, K.R.O.K built a blockchain company's platform. The project included forking another project and adding new blockchain technologies.

    Mobile App Development for Mental Health Company

    • Mobile App Development
    • $10,000 to $49,999
    • Oct. 2018 - Sep. 2021
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "The communication was excellent, and they went the extra mile for us to deliver the best possible solution."

    Aug 4, 2022
    CTO, Stress Point Health
    Dan Stevens
    Verified
    • Other industries
    • London, England
    • 1-10 Employees
    • Online Review
    • Verified

    A mental health company engaged with K.R.O.K to develop an Android and iOS mobile application. The team worked on the features and user interaction flow within the discussed deliverables and concept.

    Mobile & Web App Dev for Software Development Firm

    • Mobile App Development Web Development
    • $10,000 to $49,999
    • Aug. - Oct. 2017
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "They were a vital part of our company for the duration of the project."

    Jun 18, 2022
    CEO & Lead Developer, L’Atelier D’Ema 2011 Inc.
    Milen Milkovski
    Verified
    • Gaming
    • Montreal, Quebec
    • 1-10 Employees
    • Online Review
    • Verified

    K.R.O.K was hired by a software development firm for their mobile and web app development services. They created the specs for the existing iOS app and delivered an Android and Windows version of the product.

    Custom Software Dev for Tutoring Company

    • Custom Software Development
    • Less than $10,000
    • Nov. 2021 - Jan. 2022
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "Their flexibility and efficiency were impressive."

    Jun 11, 2022
    Co-Founder, Tutoring Company
    Owen Ho
    Verified
    • Other industries
    • Singapore
    • 1-10 Employees
    • Online Review
    • Verified

    K.R.O.K developed custom software for a tutoring company. The goal was to launch an NFT collection in Solana Blockchain.

    Blockchain & Smart Contract Development for IT Services Co

    • Blockchain
    • $10,000 to $49,999
    • Jan. 2024 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    Their responsiveness and commitment to quality also made the collaboration smooth and productive.

    Oct 23, 2025
    Customer Success Manager, IT Services Company
    Sophiia
    Verified
    • Other industries
    • Warsaw, Poland
    • 51-200 Employees
    • Online Review
    • Verified

    K.R.O.K provides blockchain development services for an IT services company. The team has developed and integrated Solana smart contracts, focusing on backend blockchain functionality and web app integration.

    Layer 2 Solution Dev for BTC-Forked Private Blockchain

    • Blockchain Custom Software Development
    • $10,000 to $49,999
    • Apr. - Aug. 2025
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "They have unique expertise in bitcoin-based solutions."

    Sep 28, 2025
    Development Manager, Private blockchain
    Ivan Solomichev
    • Information technology
    • Austin, Texas
    • 1-10 Employees
    • Online Review

    K.R.O.K developed a Layer 2 (L2) solution for a BTC-forked private blockchain. The team conducted comprehensive testing, delivered documentation, and demonstrated a deep understanding of blockchain technology.

    Blockchain & API Development for Software Co

    • API Development Blockchain Custom Software Development
    • $10,000 to $49,999
    • Apr. - Sep. 2024
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "K.R.O.K's excellent quality for a fair price impressed us."

    Dec 20, 2024
    Managing Partner, Software Co
    Anonymous
    Verified
    • Other industries
    • Estonia
    • 201-500 Employees
    • Online Review
    • Verified

    K.R.O.K provided blockchain development services for a software company. The team helped the client with the backend realization in Rust, including the smart contract level.

    Solana-Based Web App Dev & UX/UI Design for AI Company

    • Blockchain Custom Software Development UX/UI Design
    • $10,000 to $49,999
    • Feb. - July 2024
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "I found their dedication to maintaining meetings and hitting deadlines unique."

    Dec 11, 2024
    Executive, Tri Solutions
    Anonymous
    • Information technology
    • San Francisco, California
    • 1-10 Employees
    • Online Review

    K.R.O.K designed and developed a Solana-based swap web app for an AI company. The team integrated Jupiter, wallet connections, natural language processing, and smart contract interactions.

    Showing 1-9 of 9 Reviews

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

    Learn More
    Verified Client Reviews
    7
    Overall Review Rating
    5
    Source
    Clutch
    Last Updated
    October 23, 2025

    Business Entity

    Business Entity Name Limited Liability Company K.R.O.K. (ТОВ "К.Р.О.К.")
    Source Youcontrol
    Jurisdiction of Formation Ukraine
    Date of Formation August 21, 2019
    Status Active
    Last Updated March 5, 2025
    ID 43183621

    Credit Report Results

    International Credit Risk Assessment Not Rated
    Source Creditsafe
    Last Updated March 15, 2025

    *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 (1)

    Pasichna 154B L'vivUkraine 79000

    16 - 20

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