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Top Blockchain Companies & Developers in Seoul

Ratings Updated: January 7, 2026
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3 Leaders 1 Contenders

4 Companies

Country: South Korea
City: Seoul

List of the Top Seoul Blockchain Development Companies

  • Featured

    What are Featured Providers?

    RedDuck Logotype

    RedDuck

    5.0 13 reviews
    Verified
    $10,000+
    $50 - $99 / hr
    10 - 49
    Serves Seoul, South Korea

    Services provided

    100% Blockchain

    RedDuck is a blockchain development company specializing in delivering comprehensive blockchain solutions, including smart contract development, distributed ledger technology, and decentralized application (DApp) development. Clients consistently praise their technical precision, proactive communication, and ability to deliver projects on time, with a 100% satisfaction rate highlighted across multiple reviews. Their expertise in blockchain technology and strategic product development is noteworthy.

    See all 13 projects

    Reviews mention Unique expertise

    Clients have expressed strong satisfaction with RedDuck's unique expertise, particularly in functional programming and Solidity code testing. One client noted the 'large concentration of functional programming expertise' as a distinguishing feature. The quality of code produced was highlighted as 'very high,' and the team's ability to adjust their approach based on feedback was commendable. Overall, the sentiment is highly positive, with clients recommending RedDuck for their specialized skills and adaptability.
    • Custom Software Development for Blockchain Company
      5.0 Mar 18, 2022

      I was impressed by RedDuck’s large concentration of functional programming expertise, which very few providers have.

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    5 of 5 Blockchain reviews are 5 stars
    2 new reviews for Blockchain in past 6 months
    $50,000 – $199,999 avg. project cost

    Blockchain PROJECT HIGHLIGHT

    Blockchain Development for FinTech Company

    5.0 — RedDuck developed a DeFi platform for a financial technology company. The team built the client's smart contracts, backend infrastructure, frontend app, user dashboard, landing website, and a 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

    Clients consistently praised RedDuck for offering excellent value for money and fitting within their budgetary constraints. One client noted their 'good value for cost' and another highlighted that their pricing 'fit our budget.' Overall sentiment reflects satisfaction with the company's pricing relative to the quality of services provided, with multiple reviews emphasizing timely delivery and effective project management as key aspects of their positive experience.
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    More responsive than most other service providers

    RedDuck is very responsive

    They are a great candidate to start a conversation with. Send them a short message or project inquiry.
    Get in Touch
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  • Savvycom Software Logotype

    4.8 9 reviews
    Verified
    $10,000+
    $25 - $49 / hr
    250 - 999
    Hanoi, Vietnam

    Services provided

    10% Blockchain
    35% Custom Software Development
    10% IT Staff Augmentation +7 services
    10% Mobile App Development
    10% Web Development
    5% Application Testing
    5% Generative AI
    5% IT Managed Services
    5% UX/UI Design
    5% Web Design

    Savvycom Software is a mobile and web application development company known for its professionalism, high-quality work, and effective project management. The reviews highlight their ability to deliver projects on time and within budget, with 100% of clients expressing satisfaction with their outcomes. Approximately 80% of clients commend Savvycom for their strong coding capabilities and responsiveness, while some note room for improvement in English proficiency and UI/UX design input.

    See all 9 projects

    Reviews mention Great project management

    Clients consistently commend Savvycom Software for their exceptional project management capabilities. Feedback highlights their clear communication and well-structured processes, with one client noting the 'amazing' project management style that facilitated daily interactions via Slack. Another client appreciated their ability to transform vague ideas into functional features, emphasizing their adept planning and execution. Overall, the sentiment reflects high satisfaction, with clients reporting on-time delivery and effective problem-solving throughout the project lifecycle.
    • Mobile App Development for Blockchain Solution Company
      4.5 Dec 1, 2022

      Savvycom Software has clear, and well managed project management and communication. I was impressed with their quality and professionalism.

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    • Mobile App Development for Stylist Booking Platform
      5.0 Sep 23, 2019

      The project management was amazing. Savvycom Software works in agile methodology and communicates with us over Slack every day. Our teams shared a Google Doc that they would update with questions that I would then go in and answer.

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    • App Development for Meditation Company
      5.0 Sep 17, 2019

      They have a great system of project management. I could bring them an idea for a feature, and even without tons of details, they could make what I was looking for. The Savvycom Software team is good at planning and execution, not just coding.

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    • Spectos GmBh Mobile Application Development
      5.0 Feb 27, 2014

      Savvycom performed very well. They worked independently, which I liked very much. I didn’t have to tell them every line of code. They were able to manage the project and solve problems. From our side, that was very important to make the project successful because we could not track it down to the code level with our people. That was very helpful. When it comes to meeting deadlines, Savvycom is very good. Some deadlines were postponed, which was also our responsibility. They were generally very efficient. They have a dedicated project manager, which works very well.

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    Industry Experience

    Savvycom Software has demonstrated significant expertise in various sectors, notably Software, Consumer Products, and IT Services. Feedback highlights their professionalism, project management capabilities, and technical skills across mobile app development. Clients from the Software sector commend their ability to meet tight deadlines, while those in Consumer Products appreciate the quality and functionality of developed applications. The overall sentiment is positive, with many clients expressing satisfaction with Savvycom's impact on their projects and a willingness to recommend their services across these industries.

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    Select Industry to see insights

    Software Consumer Products Business services Advertising & marketing IT Services Other Industry

    Average Project Cost Breakdown

    $50,000 to $199,999 (3) Less than $10,000 (2) $200,000 to $999,999 (2)

    What Clients Have Said

    Clients have generally expressed satisfaction with Savvycom Software's cost-effectiveness and value for money. One client noted their investment of approximately $27,000 yielded a high-quality, functional app, while another praised their reasonable pricing compared to local Australian development costs, which were six times higher. Overall, feedback indicates that Savvycom delivers quality work within budget constraints, with a strong emphasis on professionalism and timely delivery.
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    View projects from:

    Australia (2) Singapore (2) United States (2) Myanmar (1) Germany (1) South Korea (1)

    This provider is fluent in 4 languages:

    • Vietnamese
    • English
    • Korean
    • Japanese

    This provider is available in 2 time zones:

    • Vietnam Standard Time (VST)
    • Singapore Standard Time (SGT)
    View Profile Visit Website
  • 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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  • 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 platforms like WordPress and WooCommerce. Feedback is overwhelmingly positive, with 100% of reviews highlighting satisfaction with their fast delivery and responsiveness, particularly under tight deadlines. Clients appreciate their commitment to delivering as per client specifications.

    See all 1 projects

    Industry Experience

    Mckinley & Rice Inc. has demonstrated expertise in the financial services industry, particularly in website development and customization using WordPress and AWS. Clients commend their project management skills, timely delivery, and responsiveness, even under tight deadlines. Overall sentiment is highly positive, indicating strong performance and client satisfaction. This indicates that organizations within the financial sector seeking reliable web solutions and support would find Mckinley & Rice Inc. to be a suitable partner.

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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 pricing relative to the value delivered. One reviewer noted that despite a tight schedule, the company successfully met deadlines and provided quality work, emphasizing their commitment to client requirements. The overall sentiment reflects a strong appreciation for their responsiveness and project management, with no significant concerns raised regarding cost-effectiveness. Clients feel they receive good value for their investment.
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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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1 Rock'n'Block
2 Savvycom Software
3 Mckinley & Rice Inc.

List of the Top 3 Seoul Blockchain Development Companies

  1. 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
  2. Savvycom Software Logotype

    Savvycom Software

    $10,000+
    $25 - $49 / hr
    250 - 999
    Hanoi, Vietnam

    Ability to deliver

    29.5/40.0
    15.6/20 Reviews
    8/10 Clients & Experience
    5.8/10 Market Presence

    Service focus

    10% Blockchain
    90% Other
    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. 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

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