Top Blockchain Companies & Developers in South Korea

Ratings Updated: February 8, 2026

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0 Leaders 3 Contenders

3 Companies

Country: South Korea

List of the Top South Korea Blockchain Development Companies

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RedDuck

5.0 13 reviews
Verified

$10,000+

$50 - $99 / hr

10 - 49

Serves 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.

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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
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Industry Experience

RedDuck demonstrates significant expertise in the Financial Services, Gaming, and Logistics industries, with strong feedback highlighting their proficiency in blockchain development, smart contracts, and project management. Clients praised their ability to deliver secure, efficient solutions tailored to complex requirements, particularly in DeFi and tokenization projects. Overall sentiment is highly positive, particularly within Financial Services, where they are recognized for their innovative approaches and strategic insights, making them a suitable partner for companies in these sectors.
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Financial services Other Industry Logistics & Supply Chain Gaming

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View projects from:

Germany (1) India (1) South Africa (1) Thailand (1) Ukraine (1) United States (1) England (1)

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ITDA

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.
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Rock'n'Block

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.

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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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Software

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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.

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.

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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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Financial services

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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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Clutch Leaders Matrix

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A Clutch Leaders Matrix provides a broad view of the top-performing companies in a particular service or location. Each company featured in a Leaders Matrix is evaluated based on Focus and Ability to Deliver. The size of each circle indicates that company’s size.

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Focus (x-axis)

Focus accounts for a company’s specialization within a certain service.

Ability to Deliver (y-axis)

Ability to Deliver considers three criteria:

Client feedback and reviews
Work experience and previous projects
Market presence and reputation in the industry

List of the Top South Korea Blockchain Development Companies

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

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Rock'n'Block

$10,000+

$50 - $99 / hr

50 - 249

Dubai, United Arab Emirates

Ability to deliver

23.9/40.0

16.2/20 Reviews

1.8/10 Clients & Experience

6/10 Market Presence

Service focus

100% Blockchain

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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

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Related Services

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

Blockchain in Seoul

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Top Blockchain Companies & Developers in South Korea

List of the Top South Korea Blockchain Development Companies

RedDuck

Blockchain Development for FinTech Company

Industry Experience

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ITDA

Rock'n'Block

Industry Experience

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Average Project Cost Breakdown

What Clients Have Said

Mckinley & Rice Inc.

Industry Experience

Select Industry to see insights

Average Project Cost Breakdown

What Clients Have Said

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List of the Top South Korea Blockchain Development Companies

ITDA

Rock'n'Block

Mckinley & Rice Inc.

Similar Categories

Related Services

Specialties

Popular Locations in South Korea