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K.R.O.K

K.R.O.K

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5.0 (9 reviews)
L'viv, Ukraine
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Solana & Smart Contract Pros

K.R.O.K is a Blockchain Development company offering services in smart contract development and backend integration, with notable expertise in Solana-based projects. The company consistently receives positive feedback, with 100% of reviewers highlighting their technical proficiency, seamless project management, and cost-effectiveness. Clients specifically commend K.R.O.K for delivering high-quality solutions on time and maintaining transparent communication throughout the project lifecycle.

Min Project Size

$10,000

Hourly Rate

$25-49

Employees

10-49

Year Founded

1992

Languages

1

Years In Business

34+

Service Focus

Expertise distribution across services.

Pricing snapshot

Most Common Project Size $0 – $10,000 Based on 5 reviews
Average Hourly Rate $25-49 per hour
Rating for Cost 5/5

Reviews

Submit Review
The Project
Mobile App Development $10,000 to $49,999 Oct. 2018 - Sep. 2021
5
Quality 5 Schedule 5 Cost 5 Willing to Refer 5
The Review

Mobile App Development for Mental Health Company

“K.R.O.K delivered a high-quality mobile application with a solid foundation, clean code, and zero inefficiencies. The team was an adaptive, diligent, and accurate partner who worked according to the client's flow and needs. Overall, their speed in deliver”

4 weeks ago
Feedback Summary

A mental health company engaged with K.R.O.K to develop an Android and iOS mobile application. The team worked on the features and user interaction flow within the discussed deliverables and concept.

The Reviewer
D
Dan Stevens Development
L'viv, Ukraine 10-49 Verified
The Project
Mobile App Development $10,000 to $49,999 Aug. - Oct. 2017
5
Quality 5 Schedule 5 Cost 5 Willing to Refer 5
The Review

Mobile & Web App Dev for Software Development Firm

“In just two months, the final product was completed and launched for the users. The K.R.O.K team was highly organized and internal stakeholders were particularly impressed with their seamless approach to communication.”

4 weeks ago
Feedback Summary

K.R.O.K was hired by a software development firm for their mobile and web app development services. They created the specs for the existing iOS app and delivered an Android and Windows version of the product.

The Reviewer
M
Milen Milkovski Development
L'viv, Ukraine 10-49 Verified
The Project
Software Development Less than $10,000 Nov. 2021 - Jan. 2022
5
Quality 5 Schedule 5 Cost 5 Willing to Refer 5
The Review

Custom Software Dev for Tutoring Company

“K.R.O.K thoroughly understood the client's needs and requirements in order to provide optimal solutions. The team was accommodating in managing requests and successfully executed the workflow. They also utilized a Flat management style, ensuring smooth an”

4 weeks ago
Feedback Summary

K.R.O.K developed custom software for a tutoring company. The goal was to launch an NFT collection in Solana Blockchain.

The Reviewer
O
Owen Ho Development
L'viv, Ukraine 10-49 Verified
The Project
Blockchain $10,000 to $49,999 Apr. - Aug. 2025
5
Quality 5 Schedule 5 Cost 5 Willing to Refer 5
The Review

Layer 2 Solution Dev for BTC-Forked Private Blockchain

“K.R.O.K delivered the L2 solution on time, within budget, and with high performance and functionality. The team replied promptly to the client's queries and provided exceptional support during the research and design phases. Moreover, K.R.O.K's profession”

4 weeks ago
Feedback Summary

K.R.O.K developed a Layer 2 (L2) solution for a BTC-forked private blockchain. The team conducted comprehensive testing, delivered documentation, and demonstrated a deep understanding of blockchain technology.

The Reviewer
I
Ivan Solomichev Development
L'viv, Ukraine 10-49 Verified
The Project
API Development $10,000 to $49,999 Apr. - Sep. 2024
5
Quality 5 Schedule 5 Cost 5 Willing to Refer 5
The Review

Blockchain & API Development for Software Co

“K.R.O.K delivered quality work at a fair price. The team provided daily code commitments and weekly status meetings. Moreover, the team communicated effectively via virtual meetings, met deadlines, and was transparent regarding timelines. Overall, the tea”

4 weeks ago
Feedback Summary

K.R.O.K provided blockchain development services for a software company. The team helped the client with the backend realization in Rust, including the smart contract level.

The Reviewer
A
Anonymous Development
L'viv, Ukraine 10-49 Verified

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