Top Blockchain Companies & Developers in Helsinki

Ratings Updated: February 27, 2026

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4 Leaders 4 Contenders

8 Companies

Country: Finland

City: Helsinki

List of the Top Helsinki Blockchain Development Companies

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Innowise

4.9 72 reviews
Premier Verified

$10,000+

$50 - $99 / hr

1,000 - 9,999

Serves Helsinki, Finland

Services provided

10% Blockchain

10% AI Development

10% AR/VR Development +7 services

10% Cloud Consulting & SI

10% Custom Software Development

10% E-Commerce Development

10% IT Staff Augmentation

10% Mobile App Development

10% Robotics Process Automation

10% Web Development

Innowise is a Blockchain Development company noted for its expertise in Blockchain Technology, Smart Contract Development, and Decentralized System Development. Across their reviews, 100% of clients highlight their professionalism, responsiveness, and ability to meet deadlines. Additionally, 80% of reviewers commend their strategic consulting, further emphasizing their depth of expertise and commitment to delivering high-quality blockchain solutions.

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Reviews mention Meets deadlines
The feedback regarding Innowise Group's ability to meet deadlines is overwhelmingly positive. Clients highlighted their punctuality, with one stating they delivered 'on time - on budget - fully fulfilled our requirements.' Another client praised their effective project management and noted that Innowise outperformed a previous firm by avoiding delays and cost overruns. Overall, the sentiment reflects a strong reliability in meeting project timelines and client expectations.

AI Tool Development & Implementation for Virtual Power Plant

5.0 Jul 22, 2024

The measurable outcomes were the metrics calculated to evaluate the performance of the new model with respect to the previous implementations. Describe their project management. Did they deliver items on time? How did they respond to your needs? They always delivered outcomes on time, we held two 1-to-1 meetings every week and they managed to present the requested results in every meeting, exceeding our expectations.
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Custom Database Development for Private School

5.0 Oct 22, 2025

Innowise’s project management practices were good. They created a plan with milestones and deliverables and then regularly communicated with us on progress. They delivered on time and on budget and provided a product that works.
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1 of 1 reviews is 5 stars

Unknown avg. project cost

Reviewed 1 time in the past 6 months
Recent reviews of Innowise reflect a highly positive sentiment, emphasizing their effective project management and ability to deliver on time and within budget. Clients have noted significant improvements in workflow and reporting automation, particularly in the education sector. One client highlighted their transition from a previous firm due to issues with cost and deliverables, praising Innowise for being more efficient and cost-effective. Overall, feedback indicates a strong alignment with client needs and successful project outcomes.
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Industry Experience

Innowise Group has demonstrated extensive expertise across various industries, including healthcare, information technology, financial services, and advertising & marketing. Clients praised their technical proficiency, project management skills, and ability to deliver solutions that enhance operational efficiency. Feedback reveals a consistent sentiment of satisfaction, particularly in healthcare and IT services, with notable improvements in workflow and compliance. Businesses in need of software development, data management, or digital transformation in these sectors would benefit significantly from engaging Innowise.
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Design Information technology Advertising & marketing Arts, entertainment & music Software Financial services Energy & natural resources Healthcare Construction Gaming Business services IT Services Consulting Other Industry Consumer Products Telecommunications Human Resources Wellness & Fitness Manufacturing Education

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Vilnius, Lithuania

3 J. Balčikonio gatvė
Vilnius, Lithuania 08247
50 - 75

+370 65 80 32 80

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RedDuck

5.0 13 reviews
Verified

$10,000+

$50 - $99 / hr

10 - 49

Serves Helsinki, Finland

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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Reviews mention Transparent
Clients have consistently praised RedDuck for their transparency throughout the project lifecycle. One CEO noted that RedDuck provided regular progress updates and was transparent about any necessary adjustments. Clear and responsive communication was highlighted, with feedback being quickly implemented. The overall sentiment reflects a strong appreciation for RedDuck's professionalism and adaptability, establishing them as a reliable development partner that prioritizes client engagement and satisfaction.

Blockchain Development for FinTech Company

5.0 Apr 23, 2025

RedDuck demonstrated excellent project management throughout the engagement. They provided regular progress updates, stuck closely to the development timeline, and were transparent about any adjustments. Communication was clear and responsive — our feedback was always taken into account, and changes were implemented quickly.
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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.
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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 versatile software development company offering a range of services, including custom software development, web development, and UX design. Client reviews highlight their high-quality work, effective communication, and ability to integrate seamlessly with in-house teams. Approximately 80% of reviewers commend their professionalism and timely delivery, while some suggest room for improvement in language proficiency.

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Reviews mention Unique expertise
Clients consistently praised Altoros for their unique expertise in software development and UX design. One client highlighted the 'quality and expertise of software development staff,' while another noted the 'subject-matter skills and creativity' of their UX consultant. Additionally, a client emphasized Altoros's ability to provide specialists who precisely meet project requirements, a rare quality among vendors. Overall, the sentiment reflects strong confidence in Altoros's capabilities and a high level of satisfaction with their specialized skills.

Staff Augmentation for Software Dev Company

5.0 May 14, 2023

The quality and expertise of software development staff at Altoros was particularly impressive. 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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SaaS Portal Design for Data Analytics Company

5.0 Apr 11, 2022

We were impressed by the subject-matter skills and creativity provided by Altoros with their UX consultant. We would recommend him to any customer. Altoros' designer is receptive to our requests as well as creative in proposing solutions and avoiding potential pitfalls.
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Product Deployment for Digitalized Commodity Company

5.0 Mar 25, 2021

Altoros seem to be very good at providing specialists who really meet our requirements. This is a rather rare vendor quality based on my experience. If you ask them for certain specialists, they understand what qualities the specialist needs to have.
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Development Outsourcing Services for Media Web Tool

5.0 Dec 3, 2019

Altoros has an openness when it comes to development. We don’t just place an order and get something back; they help us solve complex problems and take part in the discussions. Technically, they are very good as well.
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Mobile App Dev for Weather Monitoring Device Co

4.5 Oct 18, 2019

What’s noteworthy is that they've really experienced developers. We’ve actually chosen to work with the highest quality developers even though we pay them a higher rate. Their team’s efforts have been worthwhile.
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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 consistently highlight Altoros' value for money, noting their competitive pricing relative to the quality of work delivered. For instance, one client emphasized Altoros as a 'great culture fit' and 'good value for cost,' while another praised their pricing as fitting within budget. Overall, feedback indicates satisfaction with the cost-effectiveness of their services, with many clients expressing that Altoros exceeds expectations while maintaining reasonable rates.
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Helsinki, Finland

2 Kyllikinportti
Helsinki, Finland 00240
16 - 20

+358 50 598 6600

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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

Altoros in Espoo is recognized for delivering bespoke SaaS and mobile solutions efficiently, with a focus on innovative development and clear communication. Clients value their commitment to high standards, timely delivery, and their ability to adapt to evolving project needs.
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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 Understands their clients' needs
Clients have expressed high satisfaction with TX Tomorrow Explored Oy's ability to understand their needs. One client highlighted their thorough discovery process, which effectively captured project requirements, leading to a superb final product. Additionally, the company demonstrated responsiveness by diligently noting feedback and making timely adjustments. Overall, the sentiment reflects a strong capability in aligning services with client objectives.

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

$50,000 – $199,999 avg. project cost

Blockchain PROJECT HIGHLIGHT

Blockchain Development for Blockchain Company
5.0 — A blockchain company hired TX Tomorrow Explored Oy to draft a whitepaper that memorialized their tokenomics model. Read more
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Average Project Cost Breakdown

What Clients Have Said
Clients consistently commend TX Tomorrow Explored Oy for their excellent value for money, highlighting their competitive pricing relative to the quality of work delivered. One client noted the company's 'good value for cost,' while another emphasized that their attention to detail and professionalism significantly contributed to project success, saving time and money. Overall, the sentiment surrounding the company's pricing and value proposition is highly positive, indicating satisfaction with the investment made.
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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 is a versatile IT solutions provider, offering services in IT infrastructure assessment, software and web development, mobile app development, and custom CMS solutions. Across the reviews, clients praise Oivan for their flexibility, resourcefulness, and ability to understand business needs, with approximately 90% of feedback being positive. They are noted for delivering practical recommendations and effective communication, though suggestions for improvement include enhancing local expertise and addressing initial communication hiccups.

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Reviews mention Easy to reach
Clients generally find Oivan to be easily accessible and communicative throughout their projects. One client noted, 'They're technically skilled people who are easy to communicate with,' highlighting the smooth collaboration. Regular updates via email and Skype, along with occasional face-to-face meetings, contribute to a positive sentiment regarding accessibility. While there is a suggestion for more detailed communication in emails, overall feedback reflects satisfaction with the company's responsiveness and engagement.

Software Web Dev for Real Estate Rescue Plans

4.5 Jul 13, 2017

We’ve worked with 5–10 people from IWA. For communication, we use email and Skype around once a week. Sometimes, we also meet face-to-face.
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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
Oivan is perceived as providing good value for money, with clients noting their competitive pricing relative to the quality of service. One client highlighted a project costing €5,000, describing it as a small investment that yielded significant results. Another client reported spending around $50,000, emphasizing satisfaction with the deliverables and overall project management. The general sentiment indicates that Oivan's flexibility and expertise justify their costs, making them a recommended choice for various projects.
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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

Finnish clients highlight IWA's proficiency in mobile app creation, web development, and system architecture. They value the team's quick understanding of requirements, effective communication, and flexible approach, resulting in successful projects like health apps, real estate tools, and investor platforms.
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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

Pleasanton, CA

Ability to deliver

36.7/40.0

17.2/20 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

31.8/40.0

16.6/20 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

23.9/40.0

16.4/20 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 Meets deadlines

AI Tool Development & Implementation for Virtual Power Plant

Custom Database Development for Private School

Reviewed 1 time in the past 6 months

Industry Experience

Select Industry to see insights

Reviews mention Transparent

Blockchain Development for FinTech Company

Average Project Cost Breakdown

What Clients Have Said

RedDuck is very responsive

Reviews mention Unique expertise

Staff Augmentation for Software Dev Company

SaaS Portal Design for Data Analytics Company

Product Deployment for Digitalized Commodity Company

Development Outsourcing Services for Media Web Tool

Mobile App Dev for Weather Monitoring Device Co

Average Project Cost Breakdown

What Clients Have Said

Reviews mention Understands their clients' needs

Blockchain Development for Blockchain Company

Blockchain Development for Blockchain Company

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 reach

Software Web Dev for Real Estate Rescue Plans

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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