• Post a Project

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 $1,500 to $300,000, depending on project scope. Clients appreciate their value for cost, flexibility, and excellent communication, often highlighting the agency's ability to deliver on time and within budget.

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

  • Strong Expertise in App Development

    Stakk is praised for their proficiency in developing mobile and web applications across various industries, such as education, mental health, and e-commerce. Clients appreciated their ability to deliver intuitive and scalable solutions tailored to specific business needs.

  • Exceptional User Experience Design

    Clients consistently highlight Stakk's focus on delivering exceptional user experience and interface design. Their work is described as intuitive, polished, and enjoyable to use, significantly contributing to client satisfaction and project success.

  • Areas for Improvement in Team Expansion

    A recurring suggestion is for Stakk to expand their team to maintain client satisfaction as they grow. While current service is praised, some clients note limited access to key personnel due to their busy schedules.

  • High-Quality Deliverables

    Stakk's deliverables are consistently described as high-quality, with minimal bugs and downtime. Clients report increased user engagement and satisfaction with the solutions provided by Stakk.

  • Positive Impact on Business Growth

    Multiple clients report significant business growth as a result of Stakk's work, such as increased user engagement, higher client referrals, and improved market reach. Stakk's solutions are credited with enabling business expansion.

  • Impressive Client-Centric Approach

    Clients commend Stakk for their client-centric approach, emphasizing their dedication to understanding client visions and delivering solutions that align with their goals. Their willingness to go above and beyond is a recurring theme.

Stakk Reviews

Submit a Review
All Filters

0 selected

Sort by
Services
Project Cost
Industry
Location

Web Development & Rebrand for Fintech Company

  • Branding Web Development
  • $10,000 to $49,999
  • June 2019 - Ongoing
4.5
Quality
4.5
Schedule
4.5
Cost
4.0
Willing to Refer
4.0

“They have a positive attitude and really want to deliver good results for their clients.”

Sep 9, 2020
Director, Fintech Company
Anonymous
Verified
  • Financial services
  • London, England
  • 11-50 Employees
  • Phone Interview
  • Verified

STAKK developed two websites for a fintech company, including a site for a remittance product.

Web Platform & Mobile App Dev for Expenditures App

  • Mobile App Development UX/UI Design Web Development
  • $50,000 to $199,999
  • May 2020 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"They love what they do and are keen to engage with their clients."

Aug 25, 2020
Owner, Headspend
Anonymous
Verified
  • Information technology
  • London, England
  • 1-10 Employees
  • Phone Interview
  • Verified

STAKK provides development support for an employee expenditure platform. They’re working to build a web app and React Native mobile app for iOS and Android to build the real-time spending tracking platform.

Web Development & Design Revamp for Flooring Contractor

  • UX/UI Design Web Design Web Development
  • Less than $10,000
  • Jan. - June 2020
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

“They were always willing to pick up the phone to talk through a problem.”

Aug 20, 2020
Manager, Flooring Contractor
Anonymous
Verified
  • Other industries
  • London, England
  • 1-10 Employees
  • Phone Interview
  • Verified

STAKK developed a website for a flooring contractor. Charged with rebuilding the site from scratch despite having an existing site to work off of, they led the project from start to finish.

Mobile App Dev & UI/UX Design for B2B Jewelry Marketplace

  • Mobile App Development
  • $50,000 to $199,999
  • Dec. 2019 - May 2020
5.0
Quality
5.0
Schedule
4.5
Cost
5.0
Willing to Refer
5.0

"They’re the best I’ve encountered so far."

Jun 24, 2020
Co-Founder & CTO, Nivoda
Andre Woons
Verified
  • Manufacturing
  • London, England
  • 11-50 Employees
  • Phone Interview
  • Verified

STAKK designed and developed a mobile application, achieving feature parody with an existing website. They worked in React Native and connected it to the website via an API.

Website Design & SEO for Cabinet Company

  • Web Design
  • $10,000 to $49,999
  • Oct. 2019 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
4.5
Willing to Refer
5.0

"They were able to adjust and accomplish a great amount of work."

Jun 8, 2020
Managing Director, Black Square Joinery LTD
Kirill Polyanskiy
Verified
  • Manufacturing
  • London, England
  • 1-10 Employees
  • Online Review
  • Verified

STAKK provided web design and SEO. Their team built a website to improve search engine presence and technical aspects. 

Mobile UI/UX Design for Travel Planning App

  • UX/UI Design
  • $10,000 to $49,999
  • Oct. 2019 - Feb. 2020
4.5
Quality
4.5
Schedule
4.0
Cost
4.5
Willing to Refer
5.0

“They were very responsive, even for last-minute changes.”

May 27, 2020
Founder & CEO, Trippers.app
Charlotte Franzellin
Verified
  • Hospitality & leisure
  • London, England
  • 1-10 Employees
  • Phone Interview
  • Verified

STAKK provides UI/UX development services for a travel planning application. They worked in both iOS and Android.

App Management & Support for Campsite Listing Platform

  • Application Management & Support Application Testing Mobile App Development
  • Consumer Mobile App Development
    +2
  • $50,000 to $199,999
  • Jan. 2023 - July 2024
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"We were delighted with the work provided."

Sep 17, 2024
Director, SFS Listings LTD
Ian Curtis
  • Other industries
  • England
  • 1-10 Employees
  • Online Review

A campsite listing platform hired Stakk to maintain and improve its existing mobile app. The team provided development services and ensured the app's stability.

Events App Dev for Museum

  • Mobile App Development
  • $50,000 to $199,999
  • July - Dec. 2018
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0

"They were proactive in ensuring that the project stayed on track and that all stakeholders were aligned."

Jan 31, 2023
Conference & Events Manager, The London Museum
Johnny M.
  • Arts, entertainment & music
  • London, England
  • 201-500 Employees
  • Online Review

Stakk developed an events and conferencing app for a museum. After gathering requirements, the team created wireframes and prototypes using cutting-edge technologies. They also managed testing and QA.

Mobile App Dev for Recycling Company

  • Custom Software Development Mobile App Development
  • $10,000 to $49,999
  • Apr. 2022 - Ongoing
5.0
Quality
5.0
Schedule
4.5
Cost
5.0
Willing to Refer
5.0

"Stakk is a great development partner."

Sep 9, 2022
Shareholder, Recycling Company
Anonymous
  • Other industries
  • London, England
  • Phone Interview

A recycling company engaged with Stakk to build their iOS and Android-based mobile app. The team is working to optimize the product by implementing a database management system and a barcode scanner.

Website Dev for Mortgage Broker Company

  • Web Development
  • Less than $10,000
  • Jan. - Mar. 2018
4.0
Quality
5.0
Schedule
4.5
Cost
5.0
Willing to Refer
5.0

"STAKK are unbelievably attentive and really understood what we wanted rather than what they thought we needed."

Sep 14, 2020
Director, Flamingo Financial
Selina Masoumi
Verified
  • Financial services
  • London, England
  • 1-10 Employees
  • Online Review
  • Verified

STAKK developed a website for a mortgage broker company. The client wanted to have a platform that can represent its firm's personality and business. 

Showing 21-30 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

Contact Stakk

If you’re not seeing exactly what you need here, send this company a custom message. You can talk about your project needs, price, and timeline to get started on your project.

Connect with Stakk on Social

Get connected to see updates from Stakk like new case studies, latest reviews, their latest masterpieces in their portfolio, delivered straight to you.