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B2B Full-Cycle Product Development Bureau for SaaS

YOUR PARTNER TO BUILD MULTI-SIDED PLATFORMS

U1CORE is a product studio for the products where buyers, sellers, and operators meet, transact, and trust each other. 

Marketplaces, exchanges, auction systems, fundraising platforms, and operational CRMs with multi-role logic.

🔔 Book a Free Call: 
https://calendly.com/hello-u1core/30min

or visit our website - https://www.u1core.com/

OUR SERVICES: 

  • Min project size
    $25,000+
  • Hourly rate
    $50 - $99 / hr
  • Employees
    10 - 49
  • Locations
    Madrid, Spain
  • Year founded
    Founded 2019
  • Languages
  • Timezones

Overview by:

Reviewer avatar
Taras Oliinyk

1 Language that we service

  • English

28 Timezones that we service

ACT
Australia Central Time (ACT)
AGT
Argentina Standard Time (AGT)
AKST
Alaska Standard Time (AKST)
ART
(Arabic) Egypt Standard Time (ART)
AST
Arabia Standard Time (AST)
AET
Australia Eastern Time (AET)
BST
Bangladesh Standard Time (BST)
BET
Brazil Eastern Time (BET)
CAT
Central African Time (CAT)
CET
Central European Time (CET)
CNT
Canada Newfoundland Time (CNT)
COT
Colombia Time (COT)
CST
Central Standard Time (CST)
EST
Eastern Standard Time (EST)
EET
Eastern European Time (EET)
GMT
Greenwich Mean Time (GMT)
IDT
Israel Daylight Time (IDT)
IST
India Standard Time (IST)
JST
Japan Standard Time (JST)
MET
Middle East Time (MET)
MST
Mountain Standard Time (MST)
NET
Near East Time (NET)
NST
New Zealand Standard Time (NST)
PST
Pacific Standard Time (PST)
SGT
Singapore Standard Time (SGT)
SST
Solomon Standard Time (SST)
UTC
Universal Coordinated Time (UTC)
VST
Vietnam Standard Time (VST)

1 Locations

  • Madrid , Spain

No have been added yet...

    Pricing Snapshot

    Min. project size $25,000+
    Avg. hourly rate $50 - $99 /hr
    Rating for cost 5 /5

    What Clients Have Said

    U1CORE offers competitive pricing with good value for cost, as highlighted in multiple reviews. Project costs vary, with some clients investing around €7,000 to $25,000. Clients consistently praised their timely delivery and responsiveness, indicating a strong alignment of budget and expectations.

    This summary is based on verified Clutch reviews.

    Most Common Project Size

    $10,000 - $49,999 based on 61 reviews
    < $10,000 $10,000 - $49,999 $50,000 - $199,999 > $200,000

    Select a service to see pricing information

    U1CORE - UI/UX and Dev Partner Review Insights

    Overall Review Rating

    5.0
    • Quality 5.0
    • Schedule 5.0
    • Cost 5.0
    • Willing to Refer 5.0

    Top Mentions

    Review Highlights

    • Areas for Improvement

      A few clients noted areas for improvement, such as providing clearer guidance on long-term UX evolution and better managing timelines and budgets in some cases.

    • Strong UX/UI Design Expertise

      Clients praised U1CORE for their UX/UI design skills, which improved user engagement and satisfaction. Their designs were often described as modern, intuitive, and aligned with business goals.

    • Excellent Project Management

      U1CORE maintained structured and transparent project management, delivering on time and staying within budget. They were proactive, responsive, and ensured smooth collaboration.

    • Proactive and Strategic Approach

      U1CORE was noted for their strategic thinking, often providing proactive solutions and suggestions that enhanced project outcomes. They were seen as true partners rather than just service providers.

    • Responsive and Flexible Team

      U1CORE was praised for their flexibility and responsiveness, adapting to client needs and feedback efficiently. This adaptability contributed to the success of many projects.

    • Significant Project Successes

      U1CORE consistently delivered successful projects, boosting metrics like conversion rates, engagement, and user satisfaction across various sectors, including real estate, fintech, and e-commerce.

    U1CORE - UI/UX and Dev Partner Reviews

    Submit a Review
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    Services
    Project Cost
    Industry
    Location

    AI Dev, Product & UX/UI Design for Web Dev Co

    • AI Development Product Design UX/UI Design
    • $10,000 to $49,999
    • Jan. - Mar. 2025
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "Their blend of technical expertise, design sensibility, and business acumen is rare."

    May 21, 2025
    Executive, Artilab
    Anonymous
    • Information technology
    • City of London, England
    • 11-50 Employees
    • Online Review

    U1CORE developed a product for a web development company. The team refined the client's product strategy, AI-driven feature concepts, and UX redesigns.

    Branding & Web Design for Product Design Co

    • Branding Graphic Design Web Design
    • Confidential
    • Jan. - May 2025
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "We’re very happy with the outcome and the process."

    May 14, 2025
    CEO, Product Design Co
    Anonymous
    • Other industries
    • Tallinn, Estonia
    • 1-10 Employees
    • Online Review

    U1CORE provided branding and web design services for a product design company. The team created the client's visual identity and style guide and designed wireframes, mock-ups, and prototypes for a website.

    Product Design for UX/UI Design Studio

    • Product Design
    • Less than $10,000
    • March 2025
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "Their product design process was beautifully structured and deeply strategic."

    Apr 9, 2025
    Manager, Varti Studio
    Anonymous
    • Other industries
    • Ukraine
    • 1-10 Employees
    • Online Review

    U1CORE provided product design support for a UX/UI design studio. They designed a mobile app for an end client.

    Mobile App Design for Software Company

    • Mobile App Development Product Design UX/UI Design
    • Less than $10,000
    • Jan. - Mar. 2025
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "Their pace of work was great."

    Mar 28, 2025
    Founder, Software Company
    Anonymous
    Verified
    • Other industries
    • Kyiv, Ukraine
    • 11-50 Employees
    • Online Review
    • Verified

    U1CORE designed a mobile app for a software company. The team worked on the app's design language and branding guidelines and prepared the Figma design document for the developer handoff.

    Web App UX/UI Design Services for Real Estate Platform

    • Product Design UX/UI Design Web Design
    • Confidential
    • Oct. 2024 - Feb. 2025
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    “They exceeded every expectation.”

    Jan 22, 2025
    Founder, DraftBroker
    Harry B
    • Business services
    • Los Angeles, California
    • 1-10 Employees
    • Online Review

    U1CORE designed the UX/UI of a real estate platform's AI-enabled web app. The team created a user flow, mood board, and design concepts for multiple pages. They also provided recommendations on UX/UI design.

    Website Development for Retail Company

    • Web Development
    • $200,000 to $999,999
    • Dec. 2024 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "The team is self-assured, professional, and follows effective processes to meet deadlines and create exceptional work."

    Jan 13, 2025
    Founder, Magnolia
    Chip Gaines
    Verified
    • Retail
    • Waco, Texas
    • 1,001-5,000 Employees
    • Online Review
    • Verified

    U1CORE has developed a WordPress website for a retail company, using some of the client's existing code but building 90% of the site from scratch. The team has offered input on the site's color scheme and logo.

    Web Design & Development for Digital Marketing Agency

    • Web Design Web Development
    • $50,000 to $199,999
    • Dec. 2021 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "What impresses us most is their attention to detail and commitment to quality."

    Jan 13, 2025
    CEO, Simbo Studio
    Nikita Kudin
    • Advertising & marketing
    • Ukraine
    • 1-10 Employees
    • Online Review

    U1CORE has designed and developed a website for a digital marketing agency. They've also implemented additional features for the site and improved its overall UX.

    Web Dev for Digital Signal Company

    • Web Design Web Development
    • $200,000 to $999,999
    • November 2024
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "The quality of work was excellent, and they delivered exactly what I asked for."

    Dec 17, 2024
    Co-Founder, QuantumSDR
    Robin Colclough
    • Manufacturing
    • Tucson, Arizona
    • 201-500 Employees
    • Online Review

    U1CORE developed a website for a digital signal company. The 10-page user-friendly site promotes the nuclear industry while following specific brand guidelines.

    UI/UX Design Services for Automotive Dealership Group

    • UX/UI Design
    • $200,000 to $999,999
    • Nov. - Dec. 2024
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "What really stood out to us was the exceptional quality of U1CORE's work."

    Dec 11, 2024
    Founder, Envision Motors
    Simon Sarriedine
    • Manufacturing
    • West Covina, California
    • 51-200 Employees
    • Online Review

    U1CORE provided UI/UX design services for an automotive dealership group. The team conducted persona research and user feedback analysis, creating user personas and designs using Figma for the client's product.

    UX/UI Design for Retail Co

    • UX/UI Design Web Design
    • $200,000 to $999,999
    • Nov. - Dec. 2024
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "We have been extremely pleased with U1CORE's work and collaboration."

    Dec 8, 2024
    Founder, Shopbop
    Howard Litwack
    • Retail
    • Bellmore, New York
    • 501-1,000 Employees
    • Online Review

    U1CORE redesigned a platform's UX/UI for a retail company. The team conducted persona research and developed use cases using Figma as their design tool.

    Digital Product Subscription

    🎯 Your Flexible Design Department That Scales With Your Business Perfect for: Startups and companies that need consistent, high-quality design without hiring in-house. Product teams that value speed, flexibility, and constant designer availability. Teams looking to scale design output without adding management overhead.

    Small

    Perfect for early-stage startups or small teams

    $3,800 /month
    • UI Design
    • 1 active request at a time
    • 2–3 day average turnaround
    • Unlimited queued requests
    • Services:

    Large

    For companies that need even more

    $9,999 /month
    • Unlimited queued requests
    • 1-day onboarding
    • Cancel anytime
    • 75% refund after the first week if unsatisfied
    • Custom number of active requests
    Features

    Small

    $3,800

    /mo

    Medium

    $4,900

    /mo

    Large

    $9,999

    /mo

    UI Design

    1 active request at a time

    2–3 day average turnaround

    Unlimited queued requests

    Services:

    1-day onboarding

    Cancel anytime

    75% refund after the first week if unsatisfied

    Up to 3 active requests at a time

    1–2 day average turnaround

    All services from BASIC + more:

    Priority support

    Daily updates, demos & progress tracking

    Monthly strategy call

    Unlimited team members

    Unlimited revisions

    Dedicated dashboard

    Custom number of active requests

    Team assembled specifically for your needs (designers, devs, PMs)

    Integration into your internal tools (Slack, ClickUp, Notion, Trello, etc.)

    Ability to work in a hybrid setup with your in-house team

    Custom terms for NDA, priority, reporting, and invoicing

    Select only specific services if needed

    Everything from PRO + extras like:

    Small

    $3,800

    /mo

    UI Design

    1 active request at a time

    2–3 day average turnaround

    Unlimited queued requests

    Services:

    1-day onboarding

    Cancel anytime

    75% refund after the first week if unsatisfied

    Up to 3 active requests at a time

    1–2 day average turnaround

    All services from BASIC + more:

    Priority support

    Daily updates, demos & progress tracking

    Monthly strategy call

    Unlimited team members

    Unlimited revisions

    Dedicated dashboard

    Custom number of active requests

    Team assembled specifically for your needs (designers, devs, PMs)

    Integration into your internal tools (Slack, ClickUp, Notion, Trello, etc.)

    Ability to work in a hybrid setup with your in-house team

    Custom terms for NDA, priority, reporting, and invoicing

    Select only specific services if needed

    Everything from PRO + extras like:

    Medium

    $4,900

    /mo

    UI Design

    1 active request at a time

    2–3 day average turnaround

    Unlimited queued requests

    Services:

    1-day onboarding

    Cancel anytime

    75% refund after the first week if unsatisfied

    Up to 3 active requests at a time

    1–2 day average turnaround

    All services from BASIC + more:

    Priority support

    Daily updates, demos & progress tracking

    Monthly strategy call

    Unlimited team members

    Unlimited revisions

    Dedicated dashboard

    Custom number of active requests

    Team assembled specifically for your needs (designers, devs, PMs)

    Integration into your internal tools (Slack, ClickUp, Notion, Trello, etc.)

    Ability to work in a hybrid setup with your in-house team

    Custom terms for NDA, priority, reporting, and invoicing

    Select only specific services if needed

    Everything from PRO + extras like:

    Large

    $9,999

    /mo

    UI Design

    1 active request at a time

    2–3 day average turnaround

    Unlimited queued requests

    Services:

    1-day onboarding

    Cancel anytime

    75% refund after the first week if unsatisfied

    Up to 3 active requests at a time

    1–2 day average turnaround

    All services from BASIC + more:

    Priority support

    Daily updates, demos & progress tracking

    Monthly strategy call

    Unlimited team members

    Unlimited revisions

    Dedicated dashboard

    Custom number of active requests

    Team assembled specifically for your needs (designers, devs, PMs)

    Integration into your internal tools (Slack, ClickUp, Notion, Trello, etc.)

    Ability to work in a hybrid setup with your in-house team

    Custom terms for NDA, priority, reporting, and invoicing

    Select only specific services if needed

    Everything from PRO + extras like:

    Our Story

    We transform successful products into unicorns.

    We are the growth partner that turns your existing product into a scalable revenue machine. Through a combination of enterprise-grade development, specialized design, and targeted Go-To-Market strategy, we help established businesses capture market share and accelerate growth.

    • 300+ Projects: From mid-market to enterprise scale.
    • $20M+ Revenue: Quantifiable success for our clients.
    • High Retention: 9 out of 10 clients come to us through recommendation

    Meet the Team

    U1CORE Bureau

    U1CORE BureauTeam

    U1CORE: UX Product Design & Development Services for SaaS, FinTech, Web3 & AI At U1CORE, we specialize in transforming innovative ideas into high-performing digital products. As a B2B Product Design & Development Powerhouse, we create seamless user

    Taras Oliinyk

    Taras OliinykCEO

    🚀 CEO at U1CORE | Elevating Startups to Market Leadership with Strategic Design 🔥 As the CEO of U1CORE, I lead a design powerhouse, not just any agency. With over five years of collective experience, our team of UI/UX wizards uses an insatiable hu

    Oleksandr Viktorov.

    Oleksandr Viktorov.BDM

    Yulia Braslavets

    Yulia BraslavetsPM

    PM at U1CORE | Keeping projects on track, teams aligned, and clients happy. Turning complex briefs into smooth workflows and delivered results — on time, every time.

    What Sets Us Apart

    Built for Growth-Stage Products

    We specialize in startups and scale-ups that need more than a pretty interface — they need a product that converts, retains, and grows. Our work is designed to perform, not just to impress.

    End-to-End Ownership

    From the first discovery call to the final handoff, we own the entire process. No handoffs to mystery subcontractors, no gaps between design and development. One team, full accountability, consistent quality throughout.

    Strategy-First

    We don't just make things look good — we make them work. Every decision at U1CORE is rooted in business strategy, user psychology, and real market context. We ask the hard questions before opening Figma.

    Clutch verification provides an additional layer of data to help you make the right purchasing decision of business services.

    Learn More
    Verified Client Reviews
    29
    Overall Review Rating
    5
    Source
    Clutch
    Last Updated
    May 4, 2026

    Business Entity

    Business Entity Name UN1CORN Bureau OÜ
    Source Estonia e-Business Register
    Jurisdiction of Formation Estonia
    Date of Formation April 16, 2025
    Status Active
    Last Updated August 3, 2025
    ID 17222302

    Credit Report Results

    International Credit Risk Assessment Not Rated
    Source Creditsafe
    Last Updated August 9, 2025

    *Clutch performed additional verification on this company and confirmed that there are no negative legal filings or large outstanding debts. This company has also received 3 or more verified reviews on our platform.

    Learn More About The Clutch Verification Process

    Locations (1)

    Paseo de la Castellana 77 MadridSpain 28046

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