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Custom Software Development, Design & Consulting

Who are THEY?
Since our inception in 2017, we've grown into a remote team of experts, spanning from the UK to Poland. We specialise in delivering tailor-made web and mobile applications, with a keen focus on collaboration and direct client-developer interaction.
Our key strength is a consultancy approach to every client.
We've had the privilege of assisting over 55 businesses - from young startups to well-established companies, helping them navigate the technological landscape and achieve their goals. Our success lies in our ability to match each project's unique requirements with the right expertise

  • Min project size
    $5,000+
  • Hourly rate
    $25 - $49 / hr
  • Employees
    10 - 49
  • Locations
    London, England
  • Year founded
    Founded 2017
  • Languages
  • Timezones

2 Languages that we service

  • English
  • Polish

5 Timezones that we service

GMT
Greenwich Mean Time (GMT)
CET
Central European Time (CET)
UTC
Universal Coordinated Time (UTC)
EET
Eastern European Time (EET)
ART
(Arabic) Egypt Standard Time (ART)

2 Locations

  • London , England
  • Kraków , Poland

No have been added yet...

    Pricing Snapshot

    Min. project size $5,000+
    Avg. hourly rate $25 - $49 /hr
    Rating for cost 4.9 /5

    What Clients Have Said

    THEY.dev is noted for providing good value for cost, with pricing fitting various budgets. Clients appreciated timely delivery and responsiveness, with project sizes typically involving 2-5 team members. Specific project costs were not disclosed, but overall satisfaction with pricing was emphasized.

    This summary is based on verified Clutch reviews.

    Most Common Project Size

    < $10,000 based on 21 reviews
    < $10,000 $10,000 - $49,999 $50,000 - $199,999 > $200,000

    Select a service to see pricing information

    THEY.dev Review Insights

    Overall Review Rating

    5.0
    • Quality 4.9
    • Schedule 4.9
    • Cost 4.9
    • Willing to Refer 5.0

    Top Mentions

    Review Highlights

    • Consistent Delivery of High-Quality Results

      Clients report satisfaction with the quality of deliverables, noting that THEY.dev often exceeds expectations. Their work leads to tangible business outcomes, such as improved user experience and increased client engagement.

    • Flexibility and Adaptability

      The team is noted for their flexibility in adjusting team size and scope based on project needs. This adaptability allows them to efficiently meet client demands and maintain cost-effectiveness.

    • Strong Client Relationships and Trust

      Numerous reviews highlight the trust and strong relationships THEY.dev builds with clients. Their dedication to projects and transparent communication fosters a sense of partnership.

    • Areas for Improvement in Design Creativity

      While generally praised, some clients noted that design aspects could be more imaginative. This suggests an opportunity for THEY.dev to enhance their creative offerings in design.

    • Proactive Problem Solving

      THEY.dev is lauded for their proactive approach to identifying and solving problems. They offer creative solutions and technical recommendations that enhance project outcomes.

    • High Client Satisfaction

      Overall client satisfaction is high, with many expressing appreciation for THEY.dev's dedication, expertise, and the successful outcomes of their projects. Clients often express a desire to continue working with them.

    THEY.dev Reviews

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    Location

    Web Dashboard for Sustainability Data Analytics Company

    • Custom Software Development
    • $10,000 to $49,999
    • Aug. 2019 - Mar. 2020
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "Everything was grand."

    Aug 4, 2020
    Founder, Susterra Ltd
    James Dent
    Verified
    • Energy & natural resources
    • London, England
    • 1-10 Employees
    • Online Review
    • Verified

    TH-EY developed a web-based dashboard for a sustainability data analytics company. Working Dash, the team built both the front- and backend of the system.

    Showing 31-31 of 31 Reviews

    Packages we offer:

    UX Services

    Improve your app's key metrics with our UX services. If you don't measure KPIs or don't know what to measure, choose Small Tier. 2nd tier is best for apps fighting to get more users. Choose Large Tier if your app has users signing up, but you want to improve retention.

    Small

    Start measuring, setup analytics and KPIs

    $380 /total
    • Web analytics setup
    • Mobile analytics setup
    • KPIs definition
    • KPIs dashboard setup
    • 1 week delivery

    Large

    Improve user retention with advanced UX Audit

    $2,689 /total
    • Web analytics setup
    • Mobile analytics setup
    • KPIs definition
    • KPIs dashboard setup
    • Landing page UX audit
    • 3 week delivery
    Features

    Small

    $380

    /total

    Medium

    $888

    /total

    Large

    $2,689

    /total

    Web analytics setup

    Mobile analytics setup

    KPIs definition

    KPIs dashboard setup

    Landing page UX audit

    Signup process UX audit

    App Store/Google Play analysis (when applicable))

    Introductory workshop

    UX audit of key user flows

    Report with prioritised recommendations to improve KPIs

    Small

    $380

    /total

    Web analytics setup

    Mobile analytics setup

    KPIs definition

    KPIs dashboard setup

    Landing page UX audit

    Signup process UX audit

    App Store/Google Play analysis (when applicable))

    Introductory workshop

    UX audit of key user flows

    Report with prioritised recommendations to improve KPIs

    Medium

    $888

    /total

    Web analytics setup

    Mobile analytics setup

    KPIs definition

    KPIs dashboard setup

    Landing page UX audit

    Signup process UX audit

    App Store/Google Play analysis (when applicable))

    Introductory workshop

    UX audit of key user flows

    Report with prioritised recommendations to improve KPIs

    Large

    $2,689

    /total

    Web analytics setup

    Mobile analytics setup

    KPIs definition

    KPIs dashboard setup

    Landing page UX audit

    Signup process UX audit

    App Store/Google Play analysis (when applicable))

    Introductory workshop

    UX audit of key user flows

    Report with prioritised recommendations to improve KPIs

    Our Story

    Two developers left corporate in 2017 because they believed software gets better when clients talk directly to the people building it. No layers, no translators. That's still how we work - a remote team of 25, where developers lead projects and own client relationships. Eight years later, the longest client relationship we have is still running.

    What Sets Us Apart

    No middlemen

    There are no project managers sitting between you and the team. The developer on your project handles communication, owns the timeline, and is your main point of contact throughout.

    A team that sticks around

    26 of our projects have run for 2 or more years. Clients don't tend to leave because the people they're working with feel like an extension of their own team, not a rotating roster of contractors.

    We advise, we don't just build

    Every developer is expected to understand your business goals, not just the technical brief. That means you get someone who'll question the approach, flag a better path, and think about what actually moves your business - not just close the ticket.

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

    Learn More
    Verified Client Reviews
    28
    Overall Review Rating
    5
    Source
    Clutch
    Last Updated
    January 22, 2026

    Business Entity

    Business Entity Name TH-EY S&D Ltd
    Source Companies House
    Jurisdiction of Formation United Kingdom
    Date of Formation October 26, 2017
    Status Active
    Last Updated April 4, 2024
    ID 11033177

    Credit Report Results

    International Credit Risk Assessment Very Low Risk
    Source Creditsafe
    Last Updated April 4, 2024
    Learn More About The Clutch Verification Process

    Locations (2)

    3 Wingfield Road LondonEngland E17 9NN

    2 - 5

    Contact THEY.dev

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    Piotr Zaniewicz