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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
    $50,000+
  • Hourly rate
    $100 - $149 / hr
  • Employees
    10 - 49
  • Locations
    London, England
  • Year founded
    Founded 2016
  • Languages
  • Timezones

Overview by:

Reviewer avatar
Jack Tyson
Co-founder & Relationship Director About the Team

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)

4 Locations

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

Select Focus Area
AI Technologies & Models
AI2
10%
AI21
10%
Anthropic
10%
Cohere
10%
Deepmind Gopher
10%
Facebook OPT
10%
GPT-J
10%
GPT-Neox
10%
Hugging Face Bloom
10%
Open AI GPT-3
10%
Frameworks and CMS
Programming & Scripting
Redux
30%
Industries
Advertising & marketing
10%
Arts, entertainment & music
10%
Automotive
10%
Business services
10%
Consumer products & services
10%
Education
10%
Financial services
10%
Information technology
10%
Medical
10%
eCommerce
10%
Clients
Midmarket ($10M - $1B)
35%
Small Business (<$10M)
35%
Enterprise (>$1B)
30%

Pricing Snapshot

Min. project size $50,000+
Avg. hourly rate $100 - $149 /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 consistently report good value for money, effective project management, and transparent communication. Their services cater to various business sizes, ensuring flexibility and adaptability in pricing.

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

  • Impressive Scalability and Future-Proofing

    Stakk is noted for their ability to build scalable solutions that are future-proof, ensuring that the platforms they develop can grow with their clients' businesses. This foresight is highly valued by clients.

  • Cost-Effective and Value-Driven Services

    Stakk offers competitive pricing without compromising on quality. Clients appreciate the value they receive for their investment, often noting that Stakk's services are cost-effective compared to larger agencies.

  • Limited Areas for Improvement

    While clients have minimal criticisms, some suggested improvements include expanding their team to maintain high standards as they grow and ensuring consistent communication between project managers and developers.

  • High-Quality Design and UX/UI

    Clients are impressed with Stakk's design capabilities, particularly their attention to detail in UX/UI design. They deliver visually appealing and user-friendly interfaces that enhance the overall user experience.

  • Responsive and Adaptive to Client Needs

    Stakk is highly responsive to client feedback and adaptive to changing project requirements. Clients appreciate their flexibility and willingness to accommodate evolving needs.

  • Strong Client-Centric Approach

    Stakk is recognized for their client-focused attitude, actively engaging with clients to understand their needs and providing personalized solutions. This approach has resulted in high client satisfaction and strong relationships.

Stakk Reviews

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Services
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Industry
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Custom Software Dev for Tech Company

  • AI Development Custom Software Development Mobile App Development
  • Business Intelligence Mobile App Development
    +2
  • $200,000 to $999,999
  • Jan. 2025 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"What stood out most about this agency was the rare combination of technical excellence and genuine creative talent."

Mar 23, 2026
Director, Tech Company
Anonymous
Verified
  • Information technology
  • London, England
  • 1-10 Employees
  • Online Review
  • Verified

Stakk has developed a custom web and mobile app for a technology company. The team has designed and built the platforms from scratch, enabling the client to launch and grow their new product.

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
  • Kotlin
    +25
  • $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.

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
  • Big Commerce
    +3
  • $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.

Meet the Team

Jack Tyson

Jack TysonCo-founder & Relationship Director

Jack is the beating heart of every client partnership, the kind of person who makes people feel heard, valued and genuinely excited about what they're building together.

Girish Alwani

Girish AlwaniCo-founder & Project Director

Girish is the steady hand that guides every project from bold idea to brilliant reality, keeping teams focused, clients informed and deadlines firmly in sight.

Vikas Sharma

Vikas SharmaCo-founder & Technical Director

Vikas is the technical visionary who transforms complex challenges into elegant solutions, setting the standard for quality and innovation in everything the team builds.

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 (4)

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

10 - 15

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