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UK's #1 Mobile App Development Company

Stakk is the UK's #1 mobile app development company, rated #1 on Clutch and based in London with over 10 years of experience building custom iOS apps, Android apps, and cross-platform mobile applications for startups and global enterprises.

  • Min project size
    $25,000+
  • Hourly rate
    $50 - $99 / hr
  • Employees
    10 - 49
  • Locations
    London, England
  • Year founded
    Founded 2016
  • Languages
  • Timezones

1 Language that we service

  • English

8 Timezones that we service

GMT
Greenwich Mean Time (GMT)
CET
Central European Time (CET)
EST
Eastern Standard Time (EST)
AST
Arabia Standard Time (AST)
MET
Middle East Time (MET)
SGT
Singapore Standard Time (SGT)
PST
Pacific Standard Time (PST)
CTT
China Taiwan Time (CTT)

3 Locations

  • London , England
  • Wilmington , DE
  • Orlando , FL

No have been added yet...

    Pricing Snapshot

    Min. project size $25,000+
    Avg. hourly rate $50 - $99 /hr
    Rating for cost 4.9 /5

    What Clients Have Said

    Stakk offers competitive pricing, with project costs ranging from $6,000 to $300,000 depending on scope. Clients appreciate the value for money, noting good communication, timely delivery, and flexibility in accommodating changes without extra charges.

    This summary is based on verified Clutch reviews.

    Most Common Project Size

    $10,000 - $49,999 based on 27 reviews
    < $10,000 $10,000 - $49,999 $50,000 - $199,999 > $200,000

    Select a service to see pricing information

    Stakk Review Insights

    Overall Review Rating

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

    Top Mentions

    Review Highlights

    • Seamless Integration with Client Teams

      Stakk integrates well with client teams, often feeling like an extension of the client's own workforce. This collaborative approach enhances project outcomes and client satisfaction.

    • Adaptability to Changing Requirements

      Stakk demonstrates flexibility in accommodating evolving project requirements. Clients appreciate their willingness to adapt and their capability to implement changes efficiently without impacting project timelines.

    • Excellent Communication and Client Engagement

      Clients commend Stakk for their exceptional communication skills and client-centric approach. They maintain open channels via Slack, Zoom, and other tools, ensuring clients are updated and involved throughout project phases.

    • Positive Impact on Client Business Growth

      Stakk’s work has led to measurable business growth for clients, such as increased user engagement and expanded customer bases. Their solutions have enabled clients to achieve significant milestones and enhance market presence.

    • Limited Areas for Improvement Noted

      While most clients report a seamless experience, a few suggest minor improvements like expanding their team to handle more international clients faster. However, these do not detract from overall satisfaction.

    • High-Quality UX/UI Design

      Stakk's UX/UI design capabilities are frequently highlighted as exceptional. Clients are impressed with the intuitive and aesthetically pleasing designs that enhance user experience across different platforms.

    Stakk Reviews

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    Web Design & Development for Mental Health Therapy Office

    • Web Design Web Development
    • $50,000 to $199,999
    • Dec. 2023 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "Stakk listens to my needs and represents my brand and company well."

    Jul 29, 2025
    Executive, Mantra Therapy
    Anonymous
    Verified
    • Other industries
    • Orlando, Florida
    • 1-10 Employees
    • Phone Interview
    • Verified

    Stakk has designed and developed a website for a therapy practice. The team has worked in stages, implementing the client’s updates and requests. Stakk provides maintenance and hosting support.

    AR/VR App Design & Dev for Apple Vision Pro App Provider

    • AR/VR Development Mobile App Development UX/UI Design
    • $200,000 to $999,999
    • Sep. 2023 - May 2024
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "They're the best developers I've ever dealt with, and they're very good at what they do."

    Aug 27, 2024
    Head of Design, Yappar
    Naomi Bennett
    Verified
    • Arts, entertainment & music
    • United Kingdom
    • 1-10 Employees
    • Phone Interview
    • Verified

    Stakk developed an Apple Vision Pro VR/AR app from scratch. The team collaborated with the client to expand on their wireframes and concept and ultimately deliver the beta version of their app.

    Mobile App Design & Development for Educational Startup

    • Application Testing Mobile App Development UX/UI Design
    • $50,000 to $199,999
    • Sep. 2022 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "Stakk has been flawless from start to finish."

    Aug 23, 2024
    Founder, Flash Learning
    Natasha Beavis
    Verified
    • Education
    • United Kingdom
    • 1-10 Employees
    • Phone Interview
    • Verified

    Stakk has designed and developed a mobile application for an educational startup. The team has designed and tested the app's UI prototypes and launched a beta and an official version for iOS and Android.

    Custom Software Dev for Private Tutoring Company

    • Custom Software Development
    • $50,000 to $199,999
    • Jan. 2023 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "The platform is absolutely fantastic; it’s a really high-quality piece of technology."

    Aug 4, 2023
    Director & Founder, Private Tutoring Company
    Anonymous
    Verified
    • Education
    • London, England
    • 1-10 Employees
    • Phone Interview
    • Verified

    Stakk has built a custom platform for a private tutoring company. The team has developed the platform based on the client's brief, embedding payment processing and LMS tools using Node.js, Angular, and MongoDB.

    Web & Mobile App Dev for UX Agency & Consultancy Firm

    • E-Commerce Development Mobile App Development UX/UI Design Web Development
    • $200,000 to $999,999
    • Jan. 2022 - Mar. 2023
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "Their ability to communicate was exceptional."

    Jul 28, 2023
    Strategy Director, Browser London
    John Beck
    Verified
    • Information technology
    • London, England
    • 1-10 Employees
    • Online Review
    • Verified

    Stakk provided development and project management services for a UX agency and consultancy firm's web and mobile app projects. They helped prepare the app for launch and continuously enhanced the product.

    Web Design & Dev for Services Marketplace Platform

    • UX/UI Design Web Design Web Development
    • $10,000 to $49,999
    • Jan. 2023 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    “They’re very talented at what they do; I’ve seen it clearly from their work.”

    Mar 31, 2023
    CEO & Founder, Lynk
    Callan Bassett
    Verified
    • Other industries
    • Bermuda
    • 1-10 Employees
    • Phone Interview
    • Verified

    Stakk provides website development services for a services marketplace platform. They’ve designed and developed a site that allows local contractors, tradespeople, and specialists to promote their services.

    Mobile App Development for Market Research Company

    • Mobile App Development
    • Confidential
    • June 2021 - Oct. 2022
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    “They’ll be my first call if I have another app concept in the future.”

    Nov 9, 2022
    Director, Market Research Company
    Anonymous
    Verified
    • Other industries
    • London, England
    • 11-50 Employees
    • Phone Interview
    • Verified

    Stakk provided mobile app development for a market research company. The team took over an issue-ridden codebase and reworked it to a point where it was functional. They also created backend documentation.

    React Native Mobile App Dev for Online Math Education Org

    • Mobile App Development
    • $10,000 to $49,999
    • Sep. 2021 - Mar. 2022
    5.0
    Quality
    4.5
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    “They were responsive and really delightful to deal with.”

    Nov 6, 2022
    Founder, Arc Education
    Rachel Dunsmore
    Verified
    • Education
    • York, England
    • 1-10 Employees
    • Phone Interview
    • Verified

    A math education organization hired Stakk to build their mobile app using React Native. They used an existing design, coded the app from scratch, connected it to AWS, and integrated handwriting recognition.

    Mobile App Development for Internet Publishing Company

    • Mobile App Development
    • Confidential
    • Feb. - Aug. 2019
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    ''We’ve been delighted with their work, and they've exceeded our expectations..''

    Apr 28, 2022
    Operations Manager, Internet Publishing Company
    Anonymous
    Verified
    • Other industries
    • London, England
    • 51-200 Employees
    • Phone Interview
    • Verified

    Stakk designed and developed an iOS and Android communication app for an internet publishing company. They're currently providing updates and maintenance to the platforms.

    Showing 1-10 of 30 Reviews

    Our Story

    Stakk was built on a simple belief: great apps come from great people. Based in London, we are the UK's number one mobile app development company with over ten years of experience. Our entirely in-house senior team has delivered 120 plus apps for startups and global enterprises including Samsung, LNER, and the British Museum. We are proud of our reputation for hitting deadlines, communicating openly, and building mobile experiences that users actually love.

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

    Learn More
    Verified Client Reviews
    27
    Overall Review Rating
    4.9
    Source
    Clutch
    Last Updated
    March 23, 2026

    Business Entity

    Business Entity Name Stakk Limited
    Source Companies House
    Jurisdiction of Formation United Kingdom
    Date of Formation February 12, 2020
    Status Active
    Last Updated June 7, 2022
    ID 12458461

    Credit Report Results

    International Credit Risk Assessment Very Low Risk
    Source Creditsafe
    Last Updated January 1, 2022
    Learn More About The Clutch Verification Process

    Locations (3)

    37 Lombard Street, 6th Floor, London, EC3V 9BQ LondonEngland EC3V 9BQ

    10 - 15

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