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 Timely
Nextrope consistently demonstrates a strong commitment to timely project delivery, as evidenced by client feedback. For instance, Material Mapper noted that all deliverables were provided on time, exceeding expectations. GrowUp highlighted their proactive communication and adherence to deadlines, while Openmeme praised Nextrope for successfully delivering their token on schedule. Additionally, Choyce.io emphasized that Nextrope was very time-efficient in developing their platform, with all agreed deadlines met. Overall, clients express high satisfaction regarding Nextrope's timeliness.

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. 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

The platform was delivered on time and the final result exceeded our expectations. The Nextrope team was very well coordinated. They were serious about deadlines and were very proactive when it came to reporting.
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EIP-20 Ethereum Token for Web3 Solution Provider

5.0 Mar 12, 2022

The token was successfully delivered on time and they helped us reach important developmental milestones in creating our system. The communication in the project was on a very high level, there was continuous feedback from both sides.
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Cybersecurity Audit for Blockchain-Based Company

5.0 Dec 8, 2021

Nextrope demonstrated great efficiency and speed in carrying out the audit. There were no unnecessary delays.
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Web Dev for Blockchain Dev Company

5.0 Nov 7, 2021

Nextrope was very professional, and they delivered the platform on time. All the bugs noticed were successfully fixed.
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1 of 1 Blockchain reviews are 5 stars

$10,000 – $49,000 avg. project cost

Blockchain PROJECT HIGHLIGHT

Blockchain Platform Dev for Real Estate Investment Platform
5.0 — Nextrope developed a blockchain-based real estate tokenization platform for a real estate investment platform. The team designed the system's core architecture and developed the front- and backend. Read more
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Industry Experience

Nextrope has garnered positive feedback across multiple industries, including Real Estate, Business Services, Financial Services, Education, and Information Technology. Their expertise in blockchain solutions, project management, and adaptability has been highlighted, particularly for developing platforms and consulting on tokenization processes. Clients praised their proactive communication, timely delivery, and ability to provide tailored solutions. Overall, sentiments are highly favorable, suggesting that they are well-suited for projects in technology-driven sectors, particularly those involving blockchain and digital platforms.
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Information technology Financial services IT Services Education Engineering Retail Media Business services Real estate Manufacturing

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

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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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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

Reviewers in Espoo commend Altoros for their high-quality work on complex SaaS projects, noting their ability to adapt and find cost-effective solutions. They value transparent communication, proactive problem-solving, and the team's dedication to meeting tight deadlines.
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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 High-quality work
Clients consistently commend TX Tomorrow Explored Oy for delivering high-quality work, particularly noting their exceptional attention to detail and ability to meet project objectives. One client highlighted the superb final product achieved through a thorough discovery process, while another praised the consistent stakeholder acclaim for the quality of released products. Overall, the sentiment reflects strong satisfaction with TX Tomorrow Explored Oy’s professionalism and commitment to excellence in their projects.

Blockchain Development for Blockchain Company

5.0 Mar 31, 2023

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! Not really, all in all they did a great job!
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Web3 Design & Dev Services for Decentralized Data Network

5.0 Mar 16, 2023

By far it has been their quality and attention to detail. This is very important to us and has helped us build our brand around quality and an esteemed professionalism that our community regularly reports back to us as being standout in the Web3 field.
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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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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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United States (2) Switzerland (1)

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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 Easy to work with
Clients consistently highlight Oivan's ease of collaboration, noting their open communication and responsiveness. One client stated, 'It was easy to work with them from the beginning,' reflecting a strong alignment with project goals. Another remarked on the pleasant customer service attitude, emphasizing that IWA 'tried to understand the customer’s POV.' Overall, the sentiment is highly positive, with clients appreciating Oivan's commitment to delivering quality results in a supportive manner.

iOS & Android Dev for Youth Safety Communication

4.5 Aug 9, 2017

The development project went well, and I was responsible for designing the mobile app until I went on maternity leave. Someone else then took over the project, but I learned that it was successful and that it was easy to work with IWA. Things were delivered on schedule, and it was budgeted well, so it was a good project from an economic perspective.
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iOS & Android Dev for Youth Safety Communication

4.5 Aug 9, 2017

I’ve worked on other technology projects, and they tend to require too much time, energy, and money. The collaboration with IWA was nice, and not at all painful. With previous IT projects, I’ve never had the feeling of being listened to. IWA has tried to understand the customer’s POV and keep their promise of offering support.
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iOS & Android Dev for Youth Safety Communication

4.5 Aug 9, 2017

I’ve mentioned them to other NGOs who inquired about our app. They stood out by really understanding our needs and by delivering good products. It was easy to work with them, and they have a pleasant customer service attitude. From the project reports, there seems to have been no negative feedback.
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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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Finland (10) Saudi Arabia (1) Thailand (1)

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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

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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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Top Blockchain Companies & Developers in Helsinki

List of the Top Helsinki Blockchain Development Companies

Reviews mention Timely

Business Dev Consultancy for Construction Services Startup

Tokenization Platform for IT Service Provider

EIP-20 Ethereum Token for Web3 Solution Provider

Cybersecurity Audit for Blockchain-Based Company

Web Dev for Blockchain Dev Company

Blockchain Platform Dev for Real Estate Investment Platform

Industry Experience

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Industry Experience

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Average Project Cost Breakdown

What Clients Have Said

Average Project Cost Breakdown

What Clients Have Said

Reviews mention High-quality work

Blockchain Development for Blockchain Company

Web3 Design & Dev Services for Decentralized Data Network

Web3 Design & Dev Services for Decentralized Data Network

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 Easy to work with

iOS & Android Dev for Youth Safety Communication

iOS & Android Dev for Youth Safety Communication

iOS & Android Dev for Youth Safety Communication

Industry Experience

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List of the Top 4 Helsinki Blockchain Development Companies

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