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Top Blockchain Companies & Developers in South Korea

Ratings Updated: August 4, 2026
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4 Companies

Country: South Korea

List of the Top South Korea Blockchain Development Companies

  • Featured

    What are Featured Providers?

    RedDuck Logotype

    RedDuck

    5.0 14 reviews
    Verified
    $5,000+
    $50 - $99 / hr
    10 - 49
    Serves South Korea

    Services provided

    100% Blockchain

    RedDuck is a prominent Blockchain Development company specializing in Smart Contract Development, Decentralized Application (DApp) Development, and Blockchain Solutions. With a 100% positive feedback rate from reviewers, clients commend RedDuck for their technical precision, strategic product delivery, and exceptional project management. Approximately 80% of reviews highlight their responsive communication and ability to exceed expectations within budget constraints.

    See all 14 projects

    Reviews mention Great project management

    Clients consistently praised RedDuck for their exceptional project management skills. The CEO of InvariFi highlighted their ability to provide regular progress updates and adapt to evolving requirements, demonstrating professionalism and responsiveness. Similarly, the CBDO of Red See Invest GmbH noted their excellent project management, with quick responses to inquiries and openness to suggestions. Overall, feedback reflects a strong sentiment regarding RedDuck's effective management practices, ensuring timely delivery and alignment with client needs.
    • Cryptocurrency & Blockchain Dev for Asset Tokenization Co
      5.0 Apr 21, 2025

      Always quick response to questions, very open to changes and suggestions. Excellent project management.

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    • Blockchain Development for FinTech Company
      5.0 Apr 23, 2025

      RedDuck demonstrated excellent project management throughout the engagement. They provided regular progress updates, stuck closely to the development timeline, and were transparent about any adjustments. Communication was clear and responsive — our feedback was always taken into account, and changes were implemented quickly. Overall, they showed a high level of professionalism and adaptability to our evolving requirements.

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    1 of 1 reviews is 5 stars
    Unknown avg. project cost

    Reviewed 1 time in the past 6 months

    Recent client feedback on RedDuck highlights their effective delivery of an API interface, with one client noting they met all requirements and delivered on time. The COO of NYM Technologies praised RedDuck for their good value and direct communication style, indicating satisfaction with the project management process. Overall, the sentiment is highly positive, with no identified areas for improvement.
    Read 1 Recent Review
    5 of 5 Blockchain reviews are 5 stars
    $50,000 – $199,999 avg. project cost

    Blockchain PROJECT HIGHLIGHT

    Custom Software Dev for Crypto Development Company

    5.0 — RedDuck designed and developed a custom frontend interface for a crypto development company. The scope included conceptualizing and building an advanced algorithmic bot to interact with the Read more
    Read 5 Reviews

    Average Project Cost Breakdown

    $50,000 to $199,999 (5) $10,000 to $49,000 (1)

    What Clients Have Said

    RedDuck is consistently recognized for providing good value for money across various projects. Clients noted that their pricing fit within budget constraints while delivering high-quality outcomes. For example, one client appreciated RedDuck's 'good value for cost' and timely delivery, while another highlighted their 'excellent project management' and responsiveness. Overall, feedback reflects a positive sentiment regarding the company's cost efficiency and commitment to meeting client expectations.
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  • Infograins Software Solutions Logotype

    4.9 89 reviews
    Premier Verified
    $5,000+
    $50 - $99 / hr
    250 - 999
    Seoul, South Korea

    Services provided

    30% Blockchain
    20% AI Development
    15% Custom Software Development +3 services
    15% Mobile App Development
    10% IT Staff Augmentation
    10% Web Development

    Infograins Software Solutions is a Blockchain Development company specializing in Blockchain Technology, Distributed Ledger Development, and Smart Contract Development, providing innovative solutions for various industries. Clients consistently praise their technical expertise, strategic insights, and project management skills, with over 90% of reviews highlighting their ability to deliver on time and align development with business outcomes.

    See all 89 projects

    Reviews mention Flexible

    Infograins Software Solutions has received positive feedback for their flexibility in project management. Clients highlighted their adaptability to evolving requirements, with one noting the team's willingness to accommodate late-night releases and adjust personnel as needed. Another client praised their responsive communication and ability to seamlessly integrate solutions into existing operations. Overall, the sentiment reflects a strong appreciation for Infograins' commitment to meeting client needs and delivering quality results while maintaining an agile approach.
    • Fiat Money Onramp Dev for Blockchain Venture Capital Firm
      5.0 Feb 17, 2023

      There was never any question about the project's remarkable results. Also, the developer team offers flexible scheduling, even late at night for a major release. In order to cover the task, they even assigned more personnel than was budgeted, and they often changed management and communication techniques.

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    • Software Development for IT Services Company
      5.0 Aug 3, 2022

      Additionally, the developer team offers flexible scheduling, even late at night for a major release. In order to cover the task, they even assigned more personnel than was budgeted, and they often changed management and communication techniques.

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    • Blockchain-Based Platform Development for Investment Company
      5.0 Jul 27, 2022

      Their workflow was incredibly flexible, which was great for us. The agile methodologies were known to the team members. They were incredibly accommodating, and their communication was open and honest.

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    • Custom Software Development for Financial Services Company
      5.0 Oct 11, 2023

      Infograins Software Solutions displayed an impressive depth of industry expertise, and their flexible approach left a lasting impression. Their seamless integration into our operations made the entire process feel inherently smooth and natural.

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    • AI Decentralized Platform Dev & Design for Co-Working Co
      5.0 Apr 9, 2026

      Overall, their responsiveness, adherence to timelines, and ability to adapt to evolving requirements made the collaboration seamless and dependable. Additionally, their proactive communication, flexibility in handling evolving requirements, and commitment to quality made them feel more like a strategic partner than a typical development vendor. If anything, adding slightly more detailed documentation in the early stages and increasing the frequency of initial milestone demos could make an already strong process even more streamlined.

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    Read All Reviews
    14 of 14 Blockchain reviews are 5 stars
    2 new reviews for Blockchain in past 6 months
    $1,000,000 – $9,999,999 avg. project cost

    Blockchain PROJECT HIGHLIGHT

    AI Implementation & Development for Digital AI Solutions Platform

    5.0 — Infograins Software Solutions provided AI implementation and development services for a digital AI solutions platform. The team was responsible for consumer engagement analysis, performance Read more
    Read 14 Reviews

    Industry Experience

    Infograins Software Solutions has demonstrated expertise across various sectors, including Information Technology, Financial Services, Healthcare, Advertising & Marketing, eCommerce, and Telecommunications. Clients consistently praise their technical proficiency, particularly in blockchain and AI integration, which has significantly improved operational efficiency and user engagement. Sentiment is overwhelmingly positive, highlighting their excellent project management, timely deliveries, and strong communication skills, making them well-suited for projects requiring innovation and reliability in these industries.

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    Select Industry to see insights

    Other industries Financial services IT Services Retail Energy & natural resources Telecommunications Hospitality & leisure Agriculture Software Media Transportation Gambling Arts, entertainment & music Information technology eCommerce Advertising & marketing Education Real estate Human Resources
    $8,000 Basic smart contract and blockchain prototype deve $20,000 Smart contracts, dApp development, wallet integrat $50,000 Full blockchain platform including smart contracts

    Blockchain Launch Package

    Build secure and scalable blockchain solutions for your business. Our package includes smart contract development, decentralized application (dApp) development, and blockchain architecture consulting to help startups and enterprises launch reliable Web3 platforms.
    View Packages
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  • ITDA Logotype

    Not yet reviewed

    $10,000+
    $25 - $49 / hr
    2 - 9
    seoul, South Korea

    Services provided

    10% Blockchain
    20% Custom Software Development
    20% E-Commerce Development +4 services
    20% Mobile App Development
    20% Web Development
    5% IT Strategy Consulting
    5% Other IT Consulting and SI

    Software development firm ITDA specializes in Custom Software Development and Web Development. They were launched in 2021.

    Read more
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  • Rock'n'Block Logotype

    5.0 2 reviews
    $10,000+
    $50 - $99 / hr
    50 - 249
    Seoul, South Korea

    Services provided

    100% Blockchain

    Rock'n'Block is a blockchain development company specializing in smart contract security audits and cross-chain solutions. Client reviews highlight their reliability and experienced team, with 100% positive feedback on their fast and effective project management. They are praised for their dual expertise in security audits and development, offering comprehensive blockchain solutions.

    See all 2 projects

    Industry Experience

    Rock'n'Block has received positive feedback primarily from the software industry, particularly in blockchain-related projects such as smart contract audits and cross-chain solutions. Clients highlight the company's reliability, expertise in security audits, and development capabilities, noting effective communication and timely delivery. Overall sentiment is favorable, emphasizing Rock'n'Block's dual competency in both security and development, making them a strong fit for clients within the software and blockchain sectors.

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    Select Industry to see insights

    Software

    Average Project Cost Breakdown

    $10,000 to $49,000 (1)

    What Clients Have Said

    Clients commend Rock'n'Block for their competitive pricing and strong value for money. One project manager noted their fast delivery and high-quality results, specifically praising a smart contract audit and a cross-chain solution. The client's positive sentiment reflects their satisfaction with the combination of effective project management and the company’s dual expertise in security audits and development, indicating a reliable investment for blockchain-focused projects.
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    Seoul, South Korea

    5th floor, 40, Godeok-ro, Gangdong-gu
    Seoul, South Korea 05251

    10 - 15

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  • Mckinley & Rice Inc. Logotype

    4.5 1 review
    $25,000+
    $25 - $49 / hr
    50 - 249
    Seoul, South Korea

    Services provided

    10% Blockchain
    25% Mobile App Development
    25% Web Development +7 services
    10% AI Development
    5% Application Management & Support
    5% Application Testing
    5% Custom Software Development
    5% E-Commerce Development
    5% Enterprise App Modernization
    5% IT Staff Augmentation

    Mckinley & Rice Inc. is a web development company specializing in website duplication, customization, and localization using WordPress, WooCommerce, and AWS. They received positive feedback for their project management skills, meeting tight deadlines, and responsiveness, with 100% satisfaction from reviewers. Clients appreciate their dedication to delivering client-specific solutions and responsibility in handling projects.

    See all 1 projects

    Industry Experience

    Mckinley & Rice Inc. has demonstrated expertise in the financial services sector, particularly in website development and customization. Clients commend their ability to meet tight deadlines and their strong communication throughout projects. The overall sentiment is highly positive, emphasizing their reliability and responsiveness. This company is well-suited for clients within financial services seeking efficient and tailored digital solutions.

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    Select Industry to see insights

    Financial services

    Average Project Cost Breakdown

    What Clients Have Said

    Clients have expressed satisfaction with Mckinley & Rice Inc.'s value for money, noting their ability to deliver quality work within tight deadlines. One client highlighted their responsiveness and commitment, stating they 'did a good job' and met all expectations without any areas for improvement. Overall, the sentiment indicates that the company's pricing aligns well with the quality of service provided, making them a reliable choice for projects requiring efficient execution.
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List of the Top South Korea Blockchain Development Companies

  1. ITDA Logotype

    ITDA

    $10,000+
    $25 - $49 / hr
    2 - 9
    seoul, South Korea

    Ability to deliver

    11.7/40.0
    0/20 Reviews
    7.7/10 Clients & Experience
    4/10 Market Presence

    Service focus

    10% Blockchain
    90% Other
    View Profile Visit Website
  2. Rock'n'Block Logotype

    Rock'n'Block

    $10,000+
    $50 - $99 / hr
    50 - 249
    Seoul, South Korea

    Ability to deliver

    23.9/40.0
    16.2/20 Reviews
    1.8/10 Clients & Experience
    6/10 Market Presence

    Service focus

    100% Blockchain
    View Profile Visit Website
  3. Mckinley & Rice Inc. Logotype

    Mckinley & Rice Inc.

    $25,000+
    $25 - $49 / hr
    50 - 249
    Seoul, South Korea

    Ability to deliver

    23.6/40.0
    14.6/20 Reviews
    3.7/10 Clients & Experience
    5.3/10 Market Presence

    Service focus

    10% Blockchain
    90% Other
    View Profile Visit Website
  4. Infograins Software Solutions Logotype

    Infograins Software Solutions

    $5,000+
    $50 - $99 / hr
    250 - 999
    Seoul, South Korea

    Ability to deliver

    39.4/40.0
    20/20 Reviews
    10/10 Clients & Experience
    9.4/10 Market Presence

    Service focus

    30% Blockchain
    70% Other
    View Profile Visit Website

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Web Developers in South Korea Software Developers in South Korea Mobile App Development in South Korea eCommerce in South Korea Artificial Intelligence in South Korea

Specialties

Decentralized Finance Ethereum Initial Coin Offering Consulting Metaverse Development Smart Contract Auditing Smart Contract Development Tokenization web3

Popular Locations in South Korea

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