Top Blockchain Companies & Developers in Helsinki

Ratings Updated: July 10, 2026

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8 Companies

Country: Finland

City: Helsinki

List of the Top Helsinki Blockchain Development Companies

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Nextrope

5.0 18 reviews
Premier Verified

$25,000+

$50 - $99 / hr

10 - 49

Serves Helsinki, Finland

Services provided

70% Blockchain

30% Custom Software Development

Nextrope is a Blockchain Development company specializing in Blockchain Solutions, Smart Contract Development, and Crypto Application Development. All reviews highlight their proactive approach, adaptability, and strong sense of ownership, with 100% positive feedback on their ability to align technological and business strategies effectively. Their expertise contributed to a 60% reduction in manual work and faster investment processes.

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Reviews mention Exceeds expectations
Nextrope consistently exceeds client expectations, as highlighted by their thorough analysis and high-quality deliverables. One client noted the impressive standard of their consultancy materials, comparable to top firms, which instilled confidence in internal decision-making. Another client praised the seamless integration of front-end and back-end development, with timely delivery and proactive communication. Overall, clients expressed high satisfaction with Nextrope's professionalism and commitment to meeting and surpassing project goals.

Business Dev Consultancy for Construction Services Startup

5.0 May 27, 2022

Nextrope conducted a very thorough analysis of business cases and problems we brought to them and delivered a detailed workshop, together with MBB-style business consultancy deck. Everything was delivered on time and the final result exceeded our expectations.
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Tokenization Platform for IT Service Provider

5.0 Mar 17, 2022

In addition to a visually appealing interface, their front-end and back-end development were perfectly integrated. The platform was delivered on time and the final result exceeded our expectations.
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Digital marketing for 3D Printing Recycling Company

5.0 Sep 12, 2020

The scope of service offered to clients, both in terms of business and financial sides, as well as the actual web development. As so-far the only project in material sciences as a core of our activity that Nextrope supported, we had doubts that they would be able to give us a tailored solution. However, they proved to be very competent and delivered materials that met our expectations, and even exceeded some of them.
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Average Project Cost Breakdown

$10,000 to $49,000 (10) Less than $10,000 (4) $50,000 to $199,999 (2)

What Clients Have Said
Nextrope is frequently noted for providing excellent value for money, with clients highlighting their cost-effectiveness relative to the quality of service delivered. For instance, one CEO mentioned selecting Nextrope for their 'good value for cost,' while another emphasized the 'high quality of work' achieved within a 'reasonable budget.' Overall, clients express strong satisfaction with Nextrope's pricing, describing their services as both affordable and of high quality, contributing to successful project outcomes.
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More responsive than most other service providers

Nextrope 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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Poland (11) United Arab Emirates (2) Estonia (1) Norway (1) England (1)

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RedDuck

5.0 14 reviews
Verified

$5,000+

$50 - $99 / hr

10 - 49

Serves Helsinki, Finland

Services provided

100% Blockchain

RedDuck is a Blockchain Development company specializing in Blockchain Technology, Smart Contract Development, and Cryptocurrency Development. Across multiple reviews, clients consistently commend their technical precision, strategic vision, and timely delivery. Approximately 100% of feedback highlights RedDuck's exceptional project management and responsiveness, while 80% emphasize their ability to handle complex projects and deliver secure, user-friendly solutions.

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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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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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Altoros

4.8 34 reviews

$25,000+

$50 - $99 / hr

250 - 999

Helsinki, Finland

Services provided

40% Blockchain

25% Custom Software Development

10% Enterprise App Modernization +4 services

10% Web Development

5% IT Staff Augmentation

5% Microservices Architecture Services

5% Mobile App Development

Altoros is a software development company specializing in custom software solutions, including web and mobile development, UX design, and staff augmentation. The reviews are overwhelmingly positive, with 90% highlighting their professionalism and effective communication. Clients commend Altoros for their timely delivery, adaptability, and high-quality work, although there is a suggestion for improved transparency in cybersecurity compliance.

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Reviews mention Timely
Overall, the sentiment regarding Altoros' timeliness is highly positive across multiple reviews. Clients consistently note that Altoros delivers projects on time, often ahead of schedule. For instance, one client reported that the project was completed 2-3 months earlier than expected due to the team's strong skills. Another client appreciated their excellent project management, stating they delivered under budget and ahead of schedule. Communication about timelines and progress was also highlighted as a strength, contributing to a collaborative and efficient working relationship.

Mobile App Development for Food Production Company

5.0 Oct 20, 2023

Altoros management is so cool with us, yes they deliver on time, and Altoros responds perfectly. Good communication and perfect work done.
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Staff Augmentation for Software Company

5.0 Jun 12, 2023

Altoros have been very good at receiving and providing feedback about the engineers we have been working with through them, and their responses have always been timely and professional.
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Staff Augmentation for Software Dev Company

5.0 May 14, 2023

This was a staff Augmentation model, and so Altoros team was managed by us. The deliverables were generally met on time with high quality.
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Custom Software Dev for Healthcare Organization

4.0 Jan 12, 2022

Altoros is excellent at project management. They’ve delivered the project under budget, ahead of schedule, and with a smile. We have a great relationship with their team.
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iOS App Dev for Decision-Maker Collaboration Platform

4.5 Aug 10, 2021

They’ve been really good at meeting all of our expected deadlines. We haven’t had any problems with any deliveries.
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Average Project Cost Breakdown

$200,000 to $999,999 (8) $50,000 to $199,999 (6) $10,000 to $49,000 (4) $1,000,000 to $9,999,999 (4) Less than $10,000 (1)

What Clients Have Said
Clients generally perceive Altoros as offering good value for money, often highlighting their competitive pricing and high-quality deliverables. For instance, one client noted the 'good value for cost' and praised their ability to deliver projects on time. Another client emphasized the 'impressive pricing' and mentioned that they received excellent service at a fraction of the cost compared to other firms. Overall, feedback indicates that clients feel they receive quality services that meet or exceed their expectations relative to the investment made.
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United States (15) Norway (2) Switzerland (2) Australia (2) Germany (2) Finland (1) Israel (1) Poland (1) Singapore (1) South Africa (1) Sweden (1) Denmark (1) Canada (1) England (1)

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Review Rating from Clients

5.0/5.0

Quality

4.5

Schedule

4.5

Cost

4.5

Willing to Refer

5.0

Clients in Espoo praise Altoros for delivering tailored SaaS and mobile solutions on time, emphasizing their technical expertise and flexible approach. They highlight effective project management, open communication, and innovative development methods that resulted in successful product launches.
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TX Tomorrow Explored Oy

5.0 3 reviews

Undisclosed

$100 - $149 / hr

10 - 49

Helsinki, Finland

Services provided

50% Blockchain

25% Blockchain Marketing

25% UX/UI Design

TX Tomorrow Explored Oy is a Blockchain Development company specializing in blockchain solutions, tokenomics, and smart contract development. Client feedback highlights their meticulous project management and quality of deliverables, with 100% of reviews praising their attention to detail and effective communication. Clients appreciate their structured discovery process, leading to successful outcomes in decentralized system development.

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Reviews mention Well-organized projects
Clients have praised TX Tomorrow Explored Oy for their well-organized project management and effective communication. One client noted their diligence in taking notes and responding promptly to feedback, which facilitated a smooth workflow. Additionally, the structured discovery process employed by the team ensured that client needs were comprehensively understood, leading to a high-quality final product. Overall, the sentiment regarding project organization is very positive, with no significant areas for improvement identified.

Blockchain Development for Blockchain Company

5.0 Mar 31, 2023

They kept diligent notes of our conversations, made changes according to feedback, and had a quick turn around on iterations. They ran a specific process for discovery that helped them thoroughly understand what we wanted them to design, and they used that to deliver a finished product that was superb!
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2 of 2 Blockchain reviews are 5 stars

Unknown avg. project cost

Blockchain PROJECT HIGHLIGHT

Web3 Design & Dev Services for Decentralized Data Network
5.0 — A decentralized data network has hired TX Tomorrow Explored Oy for Web3 design and development services. They work on product design, blockchain interaction, smart contract development, and token Read more
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Industry Experience

TX Tomorrow Explored Oy has received positive feedback across various industries, notably in blockchain, Web3, and software. Clients commend their expertise in tokenomics, web development, and project management, highlighting strengths in attention to detail and responsiveness. The company's impact is particularly noted in enhancing brand quality and delivering effective solutions, making them a valuable partner for businesses in technology-driven sectors seeking innovation and high-quality service.
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IT Services Software

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Average Project Cost Breakdown

What Clients Have Said
Clients consistently praise TX Tomorrow Explored Oy for their competitive pricing and strong value for money. One reviewer noted their services provided 'good value for cost,' while another highlighted how their attention to detail and quality helped save 'a lot of time and money.' Overall, the sentiment reflects satisfaction with the cost-effectiveness of their services, reinforcing the company's reputation for delivering quality outcomes that align with client expectations and budget.
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Keytech OY

5.0 1 review

$10,000+

$50 - $99 / hr

10 - 49

Helsinki, Finland

Services provided

10% Blockchain

50% Mobile App Development

20% IoT Development +2 services

10% E-Commerce Development

10% Web Development

Keytech OY is a web and mobile app development company known for its effective project management and cost-efficient services. With a small team of 2-5 employees, 100% of reviewers highlight their experienced team and ability to integrate with existing software. However, 100% of reviewers also suggest improving communication regarding project updates.

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Industry Experience

Keytech OY has garnered positive feedback in the automotive industry, specifically for their web and mobile application development services. Clients highlight their expertise in enhancing operational efficiency and communication within car service companies. The overall sentiment reflects satisfaction with their project management and value for cost, though suggestions for improving communication on deliverables were noted. This indicates that potential clients in the automotive sector can expect a reliable partnership focused on technological improvements.
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Automotive

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Average Project Cost Breakdown

$50,000 to $199,999 (1)

What Clients Have Said
Keytech OY is noted for providing good value for cost, as highlighted by a client who appreciated their pricing fitting within budget constraints. The client emphasized the company's effective project management and the positive outcomes, including time and cost savings. Overall, sentiment regarding pricing and value indicates satisfaction, though there is a suggestion for improved communication about project updates.
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Oivan

4.5 13 reviews

$10,000+

$50 - $99 / hr

50 - 249

Helsingfors, Finland

Services provided

10% Blockchain

25% Web Development

15% Custom Software Development +5 services

15% Cybersecurity

15% Mobile App Development

10% Application Management & Support

5% Cloud Consulting & SI

5% UX/UI Design

Oivan, a versatile IT services company, specializes in IT infrastructure, operations, and software development. The majority of reviews highlight Oivan's exceptional expertise and flexibility, with 100% of clients praising their project management and communication skills. Their ability to customize solutions to meet specific business needs is frequently noted, making them a respected partner in technology-driven projects.

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Reviews mention Experienced
Clients express a positive sentiment regarding Oivan's experience, highlighting their effective project management and understanding of business needs. One client noted the team's ability to provide valuable business advice alongside technical skills, emphasizing the collaborative nature of the relationship. They appreciated the fast delivery of a minimum viable product and the ease of use of the final product. However, some feedback pointed out the typical challenges smaller companies face in prioritizing projects.

WordPress Dev for Performing Arts Site

4.5 Sep 26, 2017

We worked with a junior project manager who did very well, in my opinion. We gave him a good LinkedIn recommendation based on his work. It was critical that we be on the same page from the beginning, and they were able to provide good business advice, not just technical knowledge. Fortunately, we had a fruitful start.
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Industry Experience

Oivan has demonstrated expertise across various industries including Financial Services, Education, Real Estate, and Arts & Entertainment. Clients praised Oivan for its flexibility, understanding of business needs, and effective communication. In Financial Services, they provided robust IT solutions, while in Education, they developed user-friendly apps. The Real Estate sector benefited from Oivan's system architecture and management tools. Overall, Oivan is well-regarded for its technical competence and responsiveness, making it a strong candidate for projects in these sectors.
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Financial services IT Services Real estate Education Arts, entertainment & music Nonprofit Other Industry

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Average Project Cost Breakdown

$10,000 to $49,000 (4) $50,000 to $199,999 (4) Less than $10,000 (2) $200,000 to $999,999 (1)

What Clients Have Said
Clients generally express satisfaction with Oivan's pricing and the value they receive for their investment. One client noted, 'We had a very good deal' for their project costing around $6,000, while another highlighted that their investment of approximately $80,000 was well spent, describing the collaboration as smooth and productive. Overall, feedback indicates that Oivan delivers quality services that align with clients' budgets, providing clear value throughout their engagements.
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Review Rating from Clients

4.4/5.0

Quality

4.5

Schedule

4.2

Cost

4.4

Willing to Refer

4.8

Helsinki-based clients highlight IWA's technical skill and adaptability in handling web, mobile, and system architecture projects. They value the company's proactive communication, deep understanding of client requirements, and consistent delivery of effective, user-centric digital solutions.
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Blockchain Business Security Solutions Finland

Not yet reviewed

$100,000+

$300+ / hr

2 - 9

Helsinki, Finland

Services provided

100% Blockchain

Blockchain company Blockchain Business Security Solutions Finland was founded in 2022. The team focuses on Blockchain and is based in Helsinki, Finland.
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Nordivo

Not yet reviewed

$10,000+

$50 - $99 / hr

10 - 49

Helsinki, Finland

Services provided

100% Blockchain

Nordivo is a small Helsinki, Finland-based Blockchain company. Their services include Blockchain.
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Seita Technologies Oy

Not yet reviewed

Undisclosed

Undisclosed

10 - 49

Helsinki, Finland

Services provided

40% Blockchain

20% Custom Software Development

10% E-Commerce Development +3 services

10% IT Managed Services

10% IT Strategy Consulting

10% Mobile App Development

Seita Technologies Oy is a Helsinki, Finland-based Blockchain company. Launched in 2012, the team provides Blockchain and Custom Software Development.
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HeyDay Pro

Not yet reviewed

$5,000+

$100 - $149 / hr

10 - 49

Helsinki, Finland

Services provided

25% Blockchain

25% AR/VR Development

20% BI & Big Data Consulting & SI +2 services

15% AI Development

15% IoT Development

Established in 2000, HeyDay Pro is a small Helsinki, Finland-based AR/VR development company. Their team provides AR/VR development and Blockchain.
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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 Altoros

2 TX Tomorrow Explored Oy

3 Keytech OY

4 Oivan

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 4 Helsinki Blockchain Development Companies

Altoros

$25,000+

$50 - $99 / hr

250 - 999

Helsinki, Finland

Ability to deliver

35.7/40.0

16.2/20 Reviews

10/10 Clients & Experience

9.5/10 Market Presence

Service focus

40% Blockchain

60% Other

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TX Tomorrow Explored Oy

Undisclosed

$100 - $149 / hr

10 - 49

Helsinki, Finland

Ability to deliver

31.4/40.0

16.2/20 Reviews

9.9/10 Clients & Experience

5.3/10 Market Presence

Service focus

50% Blockchain

50% Other

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Keytech OY

$10,000+

$50 - $99 / hr

10 - 49

Helsinki, Finland

Ability to deliver

23.7/40.0

16.2/20 Reviews

2.2/10 Clients & Experience

5.3/10 Market Presence

Service focus

10% Blockchain

90% Other

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Oivan

$10,000+

$50 - $99 / hr

50 - 249

Helsingfors, Finland

Ability to deliver

23.4/40.0

14.6/20 Reviews

3.6/10 Clients & Experience

5.2/10 Market Presence

Service focus

10% Blockchain

90% Other

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Blockchain Business Security Solutions Finland

$100,000+

$300+ / hr

2 - 9

Helsinki, Finland

Ability to deliver

4/40.0

0/20 Reviews

0/10 Clients & Experience

4/10 Market Presence

Service focus

100% Blockchain

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Nordivo

$10,000+

$50 - $99 / hr

10 - 49

Helsinki, Finland

Ability to deliver

4/40.0

0/20 Reviews

0/10 Clients & Experience

4/10 Market Presence

Service focus

100% Blockchain

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Seita Technologies Oy

Undisclosed

Undisclosed

10 - 49

Helsinki, Finland

Ability to deliver

0/40.0

0/20 Reviews

0/10 Clients & Experience

0/10 Market Presence

Service focus

40% Blockchain

60% Other

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HeyDay Pro

$5,000+

$100 - $149 / hr

10 - 49

Helsinki, Finland

Ability to deliver

0/40.0

0/20 Reviews

0/10 Clients & Experience

0/10 Market Presence

Service focus

25% Blockchain

75% Other

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Specialties

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

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Top Blockchain Companies & Developers in Helsinki

List of the Top Helsinki Blockchain Development Companies

Reviews mention Exceeds expectations

Business Dev Consultancy for Construction Services Startup

Tokenization Platform for IT Service Provider

Digital marketing for 3D Printing Recycling Company

Average Project Cost Breakdown

What Clients Have Said

Nextrope is very responsive

Blockchain Development for FinTech Company

Industry Experience

Select Industry to see insights

Average Project Cost Breakdown

What Clients Have Said

RedDuck is very responsive

Reviews mention Timely

Mobile App Development for Food Production Company

Staff Augmentation for Software Company

Staff Augmentation for Software Dev Company

Custom Software Dev for Healthcare Organization

iOS App Dev for Decision-Maker Collaboration Platform

Average Project Cost Breakdown

What Clients Have Said

Reviews mention Well-organized projects

Blockchain Development for Blockchain Company

Web3 Design & Dev Services for Decentralized Data Network

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

Reviews mention Experienced

WordPress Dev for Performing Arts Site

Industry Experience

Select Industry to see insights

Average Project Cost Breakdown

What Clients Have Said

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List of the Top 4 Helsinki Blockchain Development Companies

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