Top Blockchain Companies & Developers in Seoul

Ratings Updated: August 4, 2026

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4 Companies

Country: South Korea

City: Seoul

List of the Top Seoul Blockchain Development Companies

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RedDuck

5.0 14 reviews

Verified

$1,000+

$25 - $49 / hr

10 - 49

Serves Seoul, 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.

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Reviews mention Hard working
Clients express strong satisfaction with RedDuck's dedication and work ethic. One client noted that RedDuck consistently delivers ahead of schedule, often completing tasks in 2-3 weeks instead of the promised four. Their commitment is further highlighted by their willingness to work late nights to meet deadlines. Overall, the sentiment surrounding RedDuck's hard work is overwhelmingly positive, with clients appreciating their reliability and proactive communication.

Web Development for Blockchain Game

5.0 Jan 27, 2022

RedDuck works hard, and if they can’t get their stuff together, they work late in the night. I live in Thailand, so it’d be nice for me if they started working at 10:00 or 11:00 a.m. I understand that it's too early for them, and they work late nights. However, it’d be a nice upgrade if they hired someone to pick up work in the morning.
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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
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Industry Experience

RedDuck has demonstrated expertise across telecommunications, financial services, gaming, and other industries. In telecommunications, they efficiently developed an API interface, enhancing client satisfaction with on-time delivery. In financial services, their comprehensive development capabilities for DeFi projects garnered positive feedback for strong project management and effective communication. Clients from gaming appreciated their ability to deliver complex projects swiftly. Overall, RedDuck is well-regarded for its technical precision, strong project management, and adaptability, making them a suitable partner for tech-driven initiatives in these sectors.
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Other Industry Logistics & Supply Chain Gaming Financial services

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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.
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Infograins Software Solutions

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.

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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
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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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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

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View projects from:

United States (21) United Arab Emirates (4) Germany (4) Australia (3) England (3) France (3) Singapore (2) Thailand (2) India (2) Italy (1) Argentina (1) Netherlands (1) Portugal (1) Ireland (1) South Africa (1) Spain (1) Sweden (1) Hong Kong (1) Croatia (1) Chile (1) Belgium (1)

This provider is fluent in 2 languages:

English

Hindi

This provider is available in 14 time zones:

Near East Time (NET)

Middle East Time (MET)

Brazil Eastern Time (BET)

Greenwich Mean Time (GMT)

India Standard Time (IST)

Eastern African Time (EAT)

Central European Time (CET)

Eastern European Time (EET)

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Seoul, South Korea

Hanyang Building 59-1 Gangnam-daero 6-gil, Seocho-gu
Seoul, South Korea 06786
2 - 5

+919770477239

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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 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.

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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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Financial services

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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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Review Rating from Clients

4.5/5.0

Quality

4.0

Schedule

4.0

Cost

5.0

Willing to Refer

4.5

Clients in Seoul praise Mckinley & Rice Inc. for their quick, responsible web development, especially under tight deadlines. They value clear communication and customization, highlighting their ability to deliver quality results efficiently.
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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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Ability to deliver

Focus

Proven

Market Leaders

Emerging

Niche

Clutch Leaders Matrix

Rollover to see company insights or click a company below for more details.

1 Infograins Software Solutions

2 Rock'n'Block

3 Mckinley & Rice Inc.

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.

By using verified reviews, focused service details, and real project data, the Leaders Matrix highlights companies that consistently deliver and stand out from the rest. Each company’s position is based on how well they focus on a service area and how consistently they deliver results, helping you make informed, confident decisions. Learn More

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 3 Seoul Blockchain Development Companies

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

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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

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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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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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Top Blockchain Companies & Developers in Seoul

List of the Top Seoul Blockchain Development Companies

Reviews mention Hard working

Web Development for Blockchain Game

Custom Software Dev for Crypto Development Company

Industry Experience

Select Industry to see insights

RedDuck is very responsive

AI Implementation & Development for Digital AI Solutions Platform

Industry Experience

Select Industry to see insights

Industry Experience

Select Industry to see insights

Average Project Cost Breakdown

What Clients Have Said

Industry Experience

Select Industry to see insights

Average Project Cost Breakdown

What Clients Have Said

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List of the Top 3 Seoul Blockchain Development Companies

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