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Award-Winning Mobile App & Software Development

3 Sided Cube is an AI-first technology partner with over 100 million downloads across 87+ countries. We build mobile apps, web applications, custom software, automation workflows, and custom LLMs for organisations that need technology that performs at scale.

Our clients span emergency response, culture, environment and enterprise - including The American Red Cross, Glastonbury Festival, Vodafone and Surfers Against Sewage. We're trusted where failure isn't an option.

  • Min project size
    $50,000+
  • Hourly rate
    $100 - $149 / hr
  • Employees
    50 - 249
  • Locations
    Bournemouth, England
  • Year founded
    Founded 2009
  • Languages
  • Timezones

1 Language that we service

  • English

10 Timezones that we service

ACT
Australia Central Time (ACT)
AET
Australia Eastern Time (AET)
CET
Central European Time (CET)
EST
Eastern Standard Time (EST)
EET
Eastern European Time (EET)
GMT
Greenwich Mean Time (GMT)
MET
Middle East Time (MET)
MST
Mountain Standard Time (MST)
NST
New Zealand Standard Time (NST)
PST
Pacific Standard Time (PST)

2 Locations

  • Bournemouth , England
  • Winter Garden , FL

No have been added yet...

    Pricing Snapshot

    Min. project size $50,000+
    Avg. hourly rate $100 - $149 /hr
    Rating for cost 4.5 /5

    What Clients Have Said

    3 SIDED CUBE offers good value for cost, with project budgets ranging from £8,000 to £500,000. Clients appreciate their flexibility, responsiveness, and alignment with project values. Overall, they deliver high-quality work, often exceeding expectations within agreed timelines.

    This summary is based on verified Clutch reviews.

    Most Common Project Size

    $50,000 - $199,999 based on 38 reviews
    < $49,999 $50,000 - $199,999 $200,000 - $999,999 > $1,000,000

    Select a service to see pricing information

    3 SIDED CUBE Review Insights

    Overall Review Rating

    4.9
    • Quality 4.8
    • Schedule 4.8
    • Cost 4.5
    • Willing to Refer 5.0

    Top Mentions

    Review Highlights

    • Successful Collaboration with Diverse Clients

      3 SIDED CUBE successfully collaborates with a wide range of clients, from nonprofits to tech startups, providing tailored solutions that meet specific industry needs.

    • Limited Design Capabilities Noted by Some Clients

      While 3 SIDED CUBE excels in development, some clients suggest improvements in their design capabilities. Enhancing their design team could further strengthen their service offerings.

    • Eagerness to Use Technology for Good

      3 SIDED CUBE's eagerness to engage in projects that have a positive societal impact is frequently highlighted. They are driven by a desire to use technology to make a difference.

    • Positive Impact of Apps Developed

      Many apps developed by 3 SIDED CUBE have had significant positive impacts, including high download rates and user engagement. Their work supports important causes and enhances client missions.

    • Effective Use of Agile Methodologies

      The team's adept use of agile methodologies facilitates efficient project workflows and client collaboration. Regular stand-ups and iterative development cycles are key components of their success.

    • Innovative and User-Centric Design Approach

      Their user-centric design process and innovative approach result in intuitive and engaging applications. Clients commend their ability to incorporate user feedback and deliver products that enhance user experience.

    3 SIDED CUBE Reviews

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    Mobile App Dev for Environmental Nonprofit

    • Mobile App Development
    • $200,000 to $999,999
    • Apr. 2019 - Ongoing
    5.0
    Quality
    4.5
    Schedule
    4.0
    Cost
    4.5
    Willing to Refer
    5.0

    "The folks on the team really understood what we were trying to do."

    Jul 31, 2020
    Platform Manager, WRI
    Aaron Minnick
    Verified
    • Other industries
    • Washington, District of Columbia
    • 501-1,000 Employees
    • Phone Interview
    • Verified

    3 SIDED CUBE developed an iOS and Android mobile app using React Native, as well as a corresponding website. They added functionality that matches reforesters with organizations that provide funding. 

    iOS App Dev for Environmental Platform

    • Mobile App Development
    • $200,000 to $999,999
    • Oct. - Dec. 2019
    4.0
    Quality
    4.0
    Schedule
    4.0
    Cost
    3.0
    Willing to Refer
    5.0

    "They have talented, pragmatic people on their team."

    Jul 30, 2020
    Executive, Environmental Platform
    Anonymous
    Verified
    • Information technology
    • London, England
    • 1-10 Employees
    • Phone Interview
    • Verified

    3 SIDED CUBE provided development services for an environmental platform. Following requirements, they developed the MVP of a mobile app for iOS. They onboarded resources that continue to support the product.

    App Development for Energy Company

    • Mobile App Development
    • $10,000 to $49,999
    • Mar. - May 2019
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "They have enthusiasm, deliver at a steady pace, and are an all-around great team of people to work with."

    May 3, 2020
    Head of Digital Excellence, iSupplyEnergy
    Kris Askew
    Verified
    • Energy & natural resources
    • Bournemouth, England
    • 201-500 Employees
    • Online Review
    • Verified

    3 SIDED CUBE developed a prototype of a mobile app for an energy company. The team identified and mapped out journeys then built and designed the platform.

    Transportation Mobile App Dev for UK City Council

    • Mobile App Development
    • Less than $10,000
    • Feb. - Nov. 2019
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "3 SIDED CUBE took on the challenge and nailed it."

    Apr 16, 2020
    Transportation Innovation Manager, Coventry City Council
    Sunil Budhdeo
    Verified
    • Government
    • United Kingdom
    • 1,001-5,000 Employees
    • Phone Interview
    • Verified

    3 SIDED CUBE provided full stack development services to build a transportation safety app for a city council. They implemented location-based notification features to alert users about traffic conditions.

    Mobile App Dev for Recycling Technology Startup

    • Mobile App Development
    • Confidential
    • June - Oct. 2019
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    “Their approach to the business, clients, and customer service was second to none.”

    Mar 13, 2020
    CTO, Polytag Limited
    Phil Sutton
    Verified
    • Energy & natural resources
    • Chester, England
    • 1-10 Employees
    • Phone Interview
    • Verified

    3 SIDED CUBE developed an app that simplifies recycling for consumers and companies. The app interfaces with a cloud infrastructure and three API positions. They developed another app for scanning purposes.

    Mobile App Dev for Restaurant & Grocery Company

    • Mobile App Development
    • $50,000 to $199,999
    • Apr. - Sep. 2019
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "3 SIDED CUBE (formerly Chelsea Apps) were highly knowledgeable, nimble and collaborative."

    Feb 17, 2020
    Senior Group Digital Manager, Itsu
    Hilary Ma
    Verified
    • Advertising & marketing
    • London, England
    • 501-1,000 Employees
    • Online Review
    • Verified

    3 SIDED CUBE (formerly Chelsea Apps) supported the design and development of two testable prototypes. The scope involved building an interactive AR app and a game-based loyalty app.

    Mobile-Friendly SDK for Startup

    • Custom Software Development
    • $50,000 to $199,999
    • June 2019 - Jan. 2020
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "Having worked with a lot of other agencies, I think 3 SIDED CUBE (formerly Chelsea Apps) gets it right."

    Jan 12, 2020
    CTO, Customer Feedback Co.
    Anonymous
    Verified
    • Advertising & marketing
    • Bristol, England
    • 11-50 Employees
    • Online Review
    • Verified

    3 SIDED CUBE (formerly Chelsea Apps) delivered an SKD that can be implemented within iOS and Android applications. The team delivered both the technical architecture and creative components.

    AI-enabled E-Commerce Dev for Retail Company

    • E-Commerce Development
    • $200,000 to $999,999
    • July - Feb. 2019
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    4.0
    Willing to Refer
    5.0

    "They are a relatively small outfit, but make up for it in energy, drive, and vision."

    Nov 29, 2019
    Founder & CEO, Boxwize Ltd
    Douglas Morton
    Verified
    • Retail
    • London, England
    • 1-10 Employees
    • Online Review
    • Verified

    3 SIDED CUBE (formerly Chelsea Apps) built the frontend of a mobile-optimized e-commerce website from scratch. (The site incorporates AI functionality.) Their responsibilities included market research and user testing.

    Mobile Development for Location-Based Customer App

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

    "3 SIDED CUBE is full of passion and truly cares, with exacting standards of delivery and relationship management."

    Nov 8, 2019
    CEO, Filter
    Oliver Morrison
    Verified
    • Advertising & marketing
    • London, England
    • 11-50 Employees
    • Online Review
    • Verified

    3 SIDED CUBE developed a location-based customer application for a third-party client. With the solution, users could book appointments, manage profile information, and more.

    Mobile App Development for Cosmetics Company

    • Mobile App Development
    • $50,000 to $199,999
    • Sep. 2017 - Ongoing
    4.0
    Quality
    4.5
    Schedule
    4.0
    Cost
    4.5
    Willing to Refer
    4.5

    “3 SIDED CUBE has always been superb to work with due to their flexibility and enthusiasm.”

    Apr 12, 2019
    Technology R&D, Lush Cosmetics
    Adam Goswell
    Verified
    • Other industries
    • Ireland
    • 5,001-10,000 Employees
    • Phone Interview
    • Verified

    3 SIDED CUBE has built an array of Android and iOS mobile apps from scratch. Products range from a media player to a camera and tools for internal use. They also provide UX design, QA, and project management. 

    Showing 21-30 of 49 Reviews

    Fast Play

    Fast Play is how we help you test smart and move fast. Validating your idea in a week, not months. Whether it’s an AI workflow, app concept, or something in-between, we take your idea, build what matters, and hand back a working prototype you can actually use (or use to get sign-off or secure the big bucks).

    Small

    Your shortcut to develop ideas to proof-of-concept

    $14,850 /total
    • Align & Define
    • Ideation
    • Critique & Decide
    • Prototyping: 2 days

    Large

    Maximum time to develop the MVP and prove concepts

    $19,800 /total
    • Align & Define
    • Ideation
    • Critique & Decide
    • Prototyping: 6 days
    • Documentation
    Features

    Small

    $14,850

    /total

    Medium

    $17,820

    /total

    Large

    $19,800

    /total

    Align & Define

    Ideation

    Critique & Decide

    Prototyping

    2 days

    4 days

    6 days

    Documentation

    Small

    $14,850

    /total

    Align & Define

    Ideation

    Critique & Decide

    Prototyping

    2 days

    Documentation

    Medium

    $17,820

    /total

    Align & Define

    Ideation

    Critique & Decide

    Prototyping

    4 days

    Documentation

    Large

    $19,800

    /total

    Align & Define

    Ideation

    Critique & Decide

    Prototyping

    6 days

    Documentation

    Our Story

    We are 3 Sided Cube: a multi‑award‑winning Tech for Good studio that designs and builds in‑house software to save lives, shift systems and scale social impact. Our distributed, cross‑discipline team blends engineering, product, design and ops, guided by collaboration, user‑centred design, transparent delivery and thoughtful AI. We partner with leading mission organisations across disaster response, climate, mental health and global connectivity.

    Meet the Team

    Duncan Cook

    Duncan CookCEO

    Founder of 3 Sided Cube, with a huge passion for building projects that have real measurable impact.

    James Marriott

    James MarriottHead of Creative

    James is a visual communication professional with over 11 years of industry experience in putting a love of making visuals that solve problems to use across design projects spanning UI, print, and brand design.

    Kevin Borrill

    Kevin BorrillHead of Engineering

    Kev's main role at 3 SIDED CUBE is to be head of the engineering team and to ensure that he is wearing a hat backwards at all times. On his down time he enjoys volunteering with the Scouting movement and watching panda videos on the internet.

    Matt Lawrence

    Matt LawrenceHead of Marketing

    With 25 years in marketing, Matt is all about listening, learning, and creating experiences that feel human. He digs into customer behaviour, market dynamics, and the little details that turn good marketing into great.

    What Sets Us Apart

    AI-Native, Human-Centred

    We combine cutting-edge AI development with deep human-centred design. The result? Intelligent, intuitive products that people actually use. From AI-powered apps to automation, we build tech that feels simple but performs powerfully.

    Proven at Global Scale

    With millions of users reached through products like the official Glastonbury Festival app, we know what it takes to scale. Our team delivers reliable, high-performance mobile and web apps built for real-world demand.

    Built for Impact, Not Just Output

    We design and develop digital products that drive measurable real-world impact - from behaviour change to global reach. Trusted by NGOs, governments, and ambitious brands to turn complex challenges into scalable, high-performing apps.

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

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    Verified Client Reviews
    48
    Overall Review Rating
    4.9
    Source
    Clutch
    Last Updated
    April 22, 2026

    Business Entity

    Business Entity Name 3 SIDED CUBE DESIGN LTD
    Source Companies House
    Jurisdiction of Formation United Kingdom
    Date of Formation March 15, 2005
    Status Active
    Last Updated February 6, 2019
    ID 5393027

    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 (2)

    Patch, 1st Floor, Bobby's, 2-12 Commercial Road, BournemouthEngland BH2 5LP

    31 - 40

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