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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

    • Proactive Problem Solving and Innovation

      The team at 3 SIDED CUBE is proactive in identifying solutions and suggesting improvements. Their innovative mindset and ability to think outside the box are appreciated by clients who seek creative and effective solutions.

    • 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.

    • 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.

    • 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.

    • 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.

    3 SIDED CUBE Reviews

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    Web Dev & Design for Nonprofit Organization

    • Web Design Web Development
    • $200,000 to $999,999
    • Mar. 2021 - Jan. 2022
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    3.0
    Willing to Refer
    5.0

    "3 SIDED CUBE was a pleasure to work with — they worked fast, fluidly, and iteratively."

    Feb 20, 2022
    Executive Director, Earth HQ
    Tim Kelly
    Verified
    • Media
    • Washington, District of Columbia
    • 11-50 Employees
    • Online Review
    • Verified

    3 SIDED CUBE was tasked with developing and designing an interactive website for a nonprofit. The site featured real-time data reporting on the challenges and solutions to the climate and nature crises.

    Android & iOS App Dev for UN Agency

    • Mobile App Development UX/UI Design
    • Confidential
    • Jan. 2021 - Ongoing
    4.5
    Quality
    4.5
    Schedule
    5.0
    Cost
    3.5
    Willing to Refer
    5.0

    "They quickly and effectively attend to our needs and concerns."

    Feb 8, 2022
    Senior Campaign Officer, UNHCR
    Lara Schlotterbeck
    Verified
    • Other industries
    • Copenhagen, Denmark
    • 1-10 Employees
    • Phone Interview
    • Verified

    3 SIDED CUBE has designed and developed a UN agency’s Android and iOS app that facilitates communication between donors and refugees. They’ve created the app’s UI/UX and are iterating a new version. 

    iOS App Dev & UI/UX Design for Tech Company

    • Mobile App Development UX/UI Design
    • $50,000 to $199,999
    • Aug. - Dec. 2021
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    4.5
    Willing to Refer
    5.0

    "They were passionate about making a social impact and showed a drive for our business to succeed."

    Jan 17, 2022
    CEO & Founder, Tech Company
    Anonymous
    Verified
    • Other industries
    • Oxford, England
    • 1-10 Employees
    • Phone Interview
    • Verified

    A tech company engaged 3 SIDED CUBE to develop and design an iOS app, which quantifies stakeholders' sustainable actions. The team created wireframes before fully developing the app.

    Website & Mobile App Dev & Design for International Org.

    • Custom Software Development Mobile App Development Web Design Web Development
    • $50,000 to $199,999
    • Mar. 2021 - Ongoing
    5.0
    Quality
    4.5
    Schedule
    5.0
    Cost
    4.0
    Willing to Refer
    5.0

    "3 SIDED CUBE pushes for ideas that are sustainable and move the world forward to a better place."

    Dec 6, 2021
    Communications Officer, UNESCO
    Anonymous
    Verified
    • Government
    • Paris, France
    • 1,001-5,000 Employees
    • Phone Interview
    • Verified

    3 SIDED CUBE designed and developed a WordPress website with an integrated networking platform and related mobile app for an international organization. Now, they offer maintenance and cybersecurity services. 

    Platform Dev & Design for Women Advancement Company

    • Custom Software Development Mobile App Development UX/UI Design
    • $200,000 to $999,999
    • Apr. 2021 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    “The team is passionate about what they’re building, and they think three steps ahead of us.”

    Oct 20, 2021
    Founder & CEO, Uplevyl
    Shubhi Rao
    Verified
    • Other industries
    • Austin, Texas
    • 1-10 Employees
    • Phone Interview
    • Verified

    3 SIDED CUBE has developed a women-empowerment company’s tech platform. This involves working on the platform’s front- and backend development, UI/UX designs, website integration, and data architecture.

    Prototype Design & Mobile App Dev for Game Dev Agency

    • Mobile App Development
    • $200,000 to $999,999
    • Aug. 2020 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    4.5
    Cost
    5.0
    Willing to Refer
    5.0

    "They understand our requirements and the solutions needed to address those."

    Aug 12, 2021
    Founder, Playful Solutions
    Konstantin Mitgutsch
    Verified
    • Gaming
    • Austria
    • 1-10 Employees
    • Phone Interview
    • Verified

    3 SIDED CUBE created a prototype for the video and gaming platform of a game designing agency. They now refer to the prototype to build a mobile app based on their findings and user-specific design solutions.

    iOS & Android App Dev for Entertainment Company

    • Mobile App Development
    • $200,000 to $999,999
    • Oct. 2020 - Ongoing
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "When something resonates with them, they’ll go above and beyond to make sure that they can bring it into existence."

    Mar 22, 2021
    Founder & CEO, UMA Entertainment
    Simon O'Kelly
    Verified
    • Arts, entertainment & music
    • London, England
    • 11-50 Employees
    • Phone Interview
    • Verified

    3 SIDED CUBE serves as the mobile app partner to an entertainment company. Working to build an app for a global event, they are managing discovery, design, development, and launch.

    Custom Dev for Blockchain & Cryptocurrency Company

    • Custom Software Development
    • $1,000,000 to $9,999,999
    • July 2017 - Feb. 2021
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    5.0
    Willing to Refer
    5.0

    "They really helped us bring the product to life and perfect the finishing touches."

    Feb 26, 2021
    Technical lead, Cudo
    Peter Willis
    Verified
    • Other industries
    • London, England
    • 11-50 Employees
    • Online Review
    • Verified

    A blockchain and cryptocurrency company hired 3 SIDED CUBE (formerly Chelsea Apps) for various development projects. The team handled the creation of the client's software, mobile, and web applications.

    UX/UI Design for Blockchain Medical App Developer

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

    "I didn't feel like just another client on their books."

    Jan 2, 2021
    CEO, Dcentric Health Ltd
    Georgina Kyriakoudes
    Verified
    • Other industries
    • Limassol, Cyprus
    • 1-10 Employees
    • Online Review
    • Verified

    A medical mobile app development company partnered with 3 Sided Cube to revamp the current UX and interface for their own app as well as designing new features.

    UX/UI Software Dev for Custom Survey System

    • Custom Software Development UX/UI Design
    • $200,000 to $999,999
    • Apr. - Nov. 2020
    5.0
    Quality
    5.0
    Schedule
    5.0
    Cost
    4.0
    Willing to Refer
    5.0

    "It was clear from the beginning that they wanted to fully commit to our mission and go the extra mile."

    Nov 20, 2020
    Director of Digital Content, Inuous Ltd.
    Patrick Hussey
    Verified
    • Other industries
    • London, England
    • 11-50 Employees
    • Phone Interview
    • Verified

    3 SIDED CUBE helped a consulting firm develop a digital survey platform. After getting background information on the project, they handled UX design, front- and backend development, and QA testing.

    Showing 11-20 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.

    Learn More
    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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