Top Blockchain Companies & Developers in Helsinki

Ratings Updated: December 6, 2025

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Featured

What are Featured Providers?
Labrys

5.0 11 reviews
Premier Verified

$10,000+

$100 - $149 / hr

10 - 49

Serves Helsinki, Finland

Services provided

50% Blockchain

20% Mobile App Development

20% Web Development +1 service

10% UX/UI Design

Labrys is a blockchain development company specializing in blockchain technology, smart contract development, and cryptocurrency development. The reviews reflect a positive overall experience, with 100% of clients highlighting their professionalism, timely delivery, and exceptional technical skills. Clients particularly praise Labrys for their innovative solutions, seamless communication, and ability to deliver projects efficiently, while maintaining a collaborative and flexible approach.

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Reviews mention High-quality work
Clients have consistently praised Labrys for delivering high-quality work that meets rigorous standards. For instance, the CTO of PxQuest highlighted their thorough approach to blockchain development and testing, noting their impressive peer-review processes, which are critical in minimizing costly errors. Similarly, a co-founder of Hashlock commended Labrys for providing an 'amazing design and MVP functionality,' emphasizing their on-time and on-budget delivery with world-leading quality. Overall, the sentiment reflects strong client satisfaction regarding the quality of work produced.

Blockchain Dev & Testing for NFT Gaming Company

5.0 Aug 21, 2022

We achieved the development outcomes desired without critical bugs or compromise. The team brought a best-practice approach to blockchain development and testing. They have the most thorough approach to testing and peer-review I've seen of any web3 company, which is of great significance given the high cost of errors in blockchain development.
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AI Tool Design & Development for Smart Contract Auditing Co

5.0 Aug 21, 2025

Labrys has done an awesome job. The team has delivered an amazing design and MVP functionality. Labrys' work quality, UI, and performance have been impressive. Labrys has delivered on time, on budget, and with world-leading quality.
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Industry Experience

Labrys has demonstrated expertise across various industries including Automotive, Engineering, Arts and Entertainment, Real Estate, Gaming, Financial Services, Consumer Products, and Information Technology. Clients commend their technical skills, project management, and ability to meet deadlines. The overall sentiment is positive, with highlights on their innovative solutions, responsiveness, and adaptability. Potential clients in the Automotive, Financial Services, and Gaming sectors may find Labrys particularly well-suited for projects requiring advanced blockchain and Web3 technologies.
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Automotive Engineering Arts, entertainment & music Real estate Other Industry Gaming Financial services Consumer Products Information technology

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Average Project Cost Breakdown

$10,000 to $49,000 (1) $50,000 to $199,999 (1) $200,000 to $999,999 (1)

What Clients Have Said
Clients generally perceive Labrys as offering good value for money, often highlighting their competitive pricing relative to the quality of services provided. For instance, one client noted Labrys' 'good value for cost' and another emphasized their 'outstanding value without compromising on quality.' However, some reviews mentioned that Labrys is on the 'expensive end of the spectrum,' suggesting a perception of higher costs in certain contexts. Overall, sentiment around cost and value is positive, with clients appreciating the balance of quality and pricing.
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Australia (5) United States (4)
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Vention

4.9 98 reviews
Premier Verified

$25,000+

$50 - $99 / hr

1,000 - 9,999

Serves Helsinki, Finland

Services provided

10% Blockchain

30% Custom Software Development

10% AI Agents +5 services

10% AI Development

10% AR/VR Development

10% IT Staff Augmentation

10% Mobile App Development

10% Web Development

Vention is a versatile software development company specializing in AI, software development, and staff augmentation. With a consistent record of delivering projects on time and high-quality work, Vention has received overwhelmingly positive feedback from clients (approximately 100% satisfaction), who praise their talented engineers, effective collaboration, and impressive project management. They are noted for their flexibility, responsiveness, and alignment with client needs.

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Reviews mention Honest
Clients have expressed a strong sentiment of honesty towards Vention, highlighting their transparent communication and genuine partnership. One CEO noted that Ryan's personalized approach made them feel cared for, stating, "he was very honest and real, which differentiated Vention from other companies." Another client emphasized that Vention's team, particularly Valery, provided invaluable feedback, being "very honest and constructive." Overall, clients appreciate Vention's commitment to their success and the integrity they demonstrate throughout the project.

Design & Product Improvement for Healthcare Marketplace

4.5 Jun 19, 2020

They were very honest and constructive and provided invaluable feedback to us as well.
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2 of 4 reviews are 5 stars

$1,000,000 – $9,999,999 avg. project cost

Reviewed 4 times in the past 6 months
Recent reviews for Vention highlight a consistent theme of high-quality engineering and responsiveness. Clients praised the company's ability to quickly meet project demands, with one noting a Vention engineer's impressive performance in fixing over 100 bugs in a week. Additionally, clients appreciated Vention's capacity to seamlessly integrate into their teams and deliver timely results, with no identified areas for improvement. Overall, the sentiment is overwhelmingly positive, indicating strong client satisfaction and successful partnerships.
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Average Project Cost Breakdown

$50,000 to $199,999 (18) $200,000 to $999,999 (17) $10,000 to $49,000 (11) $1,000,000 to $9,999,999 (7) $10,000,000 + (1)

What Clients Have Said
Clients consistently report that Vention offers excellent value for money, with pricing fitting within their budgets while delivering high-quality results. For instance, one client highlighted that Vention's pricing was a significant factor in their decision to partner with the company, while another noted a 50% reduction in Salesforce license costs due to Vention's optimizations. Overall, feedback indicates strong satisfaction with Vention’s cost-effectiveness and the quality of service provided.
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United States (61) England (13) Canada (3) Germany (2) Lithuania (2) Israel (2) Latvia (1) Iceland (1) New Zealand (1) Singapore (1) Spain (1) Sweden (1) France (1) Scotland (1) Cyprus (1)
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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% Enterprise App Modernization

10% IT Staff Augmentation

10% Mobile App Development

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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1 of 1 reviews is 5 stars

Unknown avg. project cost

Reviewed 1 time in the past 6 months
In the past six months, clients have praised Innowise for their effective project management and successful delivery of custom solutions. One client highlighted their transition from another firm, noting Innowise's superior handling of timelines and budget, stating they delivered on time and provided a functional product. Overall sentiment is highly positive, emphasizing Innowise's commitment to understanding client needs and executing projects efficiently.
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5 of 5 Blockchain reviews are 5 stars

$10,000 – $49,000 avg. project cost

Blockchain PROJECT HIGHLIGHT

Blockchain & Custom Software Dev for Art Management System
5.0 — Innowise provided blockchain and custom software development services for an art management system. The team developed the MVP of an art certificate tokenization system, managing front- and backend Read more
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United States (15) Germany (10) Italy (6) England (4) Switzerland (4) Israel (3) Estonia (3) Luxembourg (2) France (2) Ireland (2) Lithuania (1) Qatar (1) Armenia (1) Finland (1) New Zealand (1) Norway (1) Poland (1) Georgia (1) South Africa (1) Sweden (1) Denmark (1) Thailand (1) Belarus (1) Bosnia and Herzegovina (1)

Vilnius, Lithuania

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

+370 65 80 32 80

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Altoros

4.8 34 reviews

$25,000+

$50 - $99 / hr

250 - 999

Oslo, Norway

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 Hard working
Clients consistently praise Altoros for their hard-working nature, highlighting the dedication and productivity of their engineers. One client noted that Altoros engineers are 'consistently skilled, hard-working, productive and reliable,' and emphasized their proactive approach in seeking better solutions rather than merely adhering to specifications. This commitment to quality and efficiency has led to a highly positive experience, with clients feeling that Altoros team members are integral to their projects.

Dev & Maintenance for Consumer Observation Company

5.0 Jun 22, 2020

Over the past 30 years, I have funded dozens of software development outsourcing projects in Vietnam, Philippines, Malaysia, India, and Sri Lanka. I have never had so positive an experience as I have had with Altoros on this project. Altoros engineers are consistently skilled, hard-working, productive and reliable.
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Industry Experience

Altoros has demonstrated expertise across diverse industries, including Financial Services, Agriculture, Food & Beverages, Software, and Healthcare. Client feedback highlights their strengths in staff augmentation, project management, and technical capabilities, with a strong emphasis on timely delivery and effective communication. Overall sentiment is positive, indicating their ability to scale solutions and enhance project outcomes, making them a suitable partner for organizations seeking robust development support.
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Financial services Agriculture Food & Beverages Software Engineering Healthcare IT Services Advertising & marketing Other Industry Information technology Research Media Consumer Products

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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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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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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 Unique expertise
Clients have praised TX Tomorrow Explored Oy for their unique expertise, particularly in web3 technology. One CEO noted their attention to detail and highlighted the team's collaborative nature as impressive. The company's ability to refine value propositions and deliver on project goals has resulted in successful outcomes, such as a go-to-market strategy. Overall, the sentiment reflects strong satisfaction with their specialized knowledge and project execution.

Value Proposition & Design Workshops for Data AI Platform

5.0 Mar 28, 2023

What did you find most impressive or unique about this company? Detail to attention and their web3 expertise.
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Industry Experience

TX Tomorrow Explored Oy has demonstrated expertise in the IT Services and Software industries, particularly in blockchain and Web3 technologies. Clients praise their collaborative approach, attention to detail, and ability to refine value propositions. Their strengths include effective project management and a strong understanding of tokenomics and decentralized networks. Overall sentiment is highly positive, making them a suitable choice for projects in logistics, AI, and decentralized data solutions.
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IT Services Software

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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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Helsinki, Finland

Siltasaarenkatu 6-10
Helsinki, Finland 00530
6 - 9

+358 400 958 991

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Featured

What are Featured Providers?
S-PRO

4.9 46 reviews
Verified

$25,000+

$25 - $49 / hr

50 - 249

Serves Helsinki, Finland

Services provided

10% Blockchain

35% Web Development

25% AI Development +4 services

15% Mobile App Development

10% Custom Software Development

3% AI Consulting

2% IT Strategy Consulting

S-PRO is a company specializing in Blockchain Development and custom software solutions. Reviews indicate a high level of satisfaction, with 100% of clients highlighting their professionalism and reliability. Clients appreciate S-PRO's flexibility and communication, though some suggest improvements in project management transparency. Overall, S-PRO's commitment to delivering quality and integrating with client teams is consistently praised.

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Reviews mention Well-organized projects
Clients consistently commend S-PRO for their well-organized project management and timely delivery of functionalities. For instance, one client noted their impressive ability to deliver on time and manage expectations effectively, while another highlighted their smooth communication and proactive planning. Overall, the sentiment reflects a strong appreciation for S-PRO's structured approach, with clients feeling confident in their project's progress and outcomes.

Web Development & Management for Physical Education Company

4.5 Apr 21, 2021

We work with 2-weeks sprints using the Scrum methodology. The technical team has daily meeting carried out by the tech lead and at the end of each sprint, we have several meetings as sprint planning and sprint review. We used Slack, Jira and GitHub as communication and project tools.
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Web & Mobile App Dev for Healthcare Company

5.0 May 22, 2018

Our project manager makes everything clear and simple. I never have to wonder about minor details or which people should be involved in the next stage. They capably plan and resources independently, based on the upcoming work. Our meetings were all well-organized, and everyone from S-PRO’s team always knew precisely what needed to be done.
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App Dev for Manufacturing Company

5.0 Mar 28, 2017

S-PRO were able to settle into the project quickly and begin delivering usable iterations with each Sprint. Despite the team being distributed globally, S-PRO delivered their tasks on time, attended meetings promptly and were able to liaise effectively with other team members, overcoming problems and impediments quickly.
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1 of 2 Blockchain reviews are 5 stars

$50,000 – $199,999 avg. project cost

Blockchain PROJECT HIGHLIGHT

Custom Software Dev for FinTech Company
5.0 — S-PRO has developed a web application for a fintech startup. The app is intended to do product marketing in the financial sector; they’ve built it based on a previous MVP. Read more
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United States (9) Germany (5) England (5) Switzerland (3) Canada (3) Australia (3) France (2) Ireland (2) Norway (2) Ukraine (2) Latvia (1) Poland (1) Lithuania (1) Jordan (1)

Łódź, Poland

70 Zachodnia
Łódź, Poland 90-403
31 - 40

+48 791 293 483

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

Kyiv, Ukraine

12 Saperne Pole Street
Kyiv, Ukraine 02000
21 - 30

+380500673074

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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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Helsinki, Finland

21 Viikintie
Helsinki, Finland 00560
6 - 9

+358 10 7390100

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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 Great project management
Clients have consistently praised Oivan's project management capabilities, highlighting their ability to deliver projects on schedule and maintain effective communication. One client noted that their project management was 'good' and everything was completed within the agreed timeframe, while another emphasized the team's keen understanding of their needs and challenges. Overall, the sentiment reflects confidence in Oivan's organizational skills and responsiveness, contributing to successful project outcomes.

Software Web Dev for Real Estate Rescue Plans

4.5 Jul 13, 2017

Their project management was good, and everything was done on schedule. Our deal with them was arranged so that we didn’t go beyond the timeframe.
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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)

Helsingfors, Finland

Ruoholahdenkatu 8
Helsingfors, Finland 00180
31 - 40

+358 40 730 7813

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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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Helsinki, Finland

Länsisatamankatu
Helsinki, Finland 00180
6 - 9

+358451275400

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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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Helsinki, Finland

4 Yliopistonkatu
Helsinki, Finland 00100
10 - 15

+358401838373

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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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Helsinki, Finland

Malminkaari 10
Helsinki, Finland 00700
2 - 5

358 29 3700 220

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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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Helsinki, Finland

Tallberginkatu 3 (Cable Factory)
Helsinki, Finland 00180

+358.50.5916085

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Top Blockchain Companies & Developers in Helsinki

List of the Top Helsinki Blockchain Development Companies

Reviews mention High-quality work

Blockchain Dev & Testing for NFT Gaming Company

AI Tool Design & Development for Smart Contract Auditing Co

Industry Experience

Select Industry to see insights

Average Project Cost Breakdown

What Clients Have Said

Reviews mention Honest

Design & Product Improvement for Healthcare Marketplace

Reviewed 4 times in the past 6 months

Average Project Cost Breakdown

What Clients Have Said

Reviewed 1 time in the past 6 months

Blockchain & Custom Software Dev for Art Management System

Reviews mention Hard working

Dev & Maintenance for Consumer Observation Company

Industry Experience

Select Industry to see insights

Average Project Cost Breakdown

What Clients Have Said

Reviews mention Unique expertise

Value Proposition & Design Workshops for Data AI Platform

Industry Experience

Select Industry to see insights

Average Project Cost Breakdown

What Clients Have Said

Reviews mention Well-organized projects

Web Development & Management for Physical Education Company

Web & Mobile App Dev for Healthcare Company

App Dev for Manufacturing Company

Custom Software Dev for FinTech Company

Blockchain Development for FinTech Company

RedDuck is very responsive

Industry Experience

Select Industry to see insights

Average Project Cost Breakdown

What Clients Have Said

Reviews mention Great project management

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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