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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

Select Focus Area
Application Platforms
Amazon Application Development Framework
20%
Linux server
20%
Other app platform
20%
Windows server
20%
AI Technologies & Models
Anthropic
75%
Open AI GPT-3
25%
Frameworks and CMS
.NET
10%
Other frameworks and CMS
10%
Programming & Scripting
PHP
25%
Python
25%
User Experience Focus
Industries
Education
15%
Energy & natural resources
15%
Government
15%
Medical
15%
Non-profit
15%
Retail
15%
Information technology
10%
Clients
Midmarket ($10M - $1B)
40%
Enterprise (>$1B)
30%
Small Business (<$10M)
30%
Certified in:
Custom Software Development UX/UI Design

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 competitive pricing, providing good value for cost as evidenced by multiple clients who noted affordability in relation to quality. Specific project costs range from £8,000 to £500,000, indicating flexibility to accommodate different budgets.

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

Top Mentions

Review Highlights

  • Challenges with Mid-Project Adjustments

    Some clients noted difficulties in making mid-project adjustments due to 3 SIDED CUBE's structured project management approach. While overall communication is praised, more flexibility in accommodating changes could enhance their service.

  • Effective Communication and Responsiveness

    Clients appreciate 3 SIDED CUBE's responsiveness and clear communication. Their use of tools like Basecamp and Slack facilitates effective collaboration, allowing for seamless information flow and quick resolution of issues.

  • Strong Alignment with Client Values

    3 SIDED CUBE is praised for aligning with clients' values, particularly in projects related to environmental and social causes. Their commitment to 'tech for good' and the ability to resonate with client missions are frequently highlighted, creating strong partnerships.

  • Exceptional Project Management

    3 SIDED CUBE consistently delivers projects on time with effective communication and transparency. Clients appreciate their ability to manage complex projects and maintain clear communication channels, ensuring that all stakeholders are informed and aligned throughout the project lifecycle.

  • Passionate and Engaged Team

    The team at 3 SIDED CUBE is noted for their passion and engagement in projects. Clients appreciate their enthusiasm and commitment to delivering impactful solutions, which fosters a collaborative and positive working environment.

  • High-Quality Deliverables

    The quality of 3 SIDED CUBE's work is consistently high, with clients noting the robustness and user-friendliness of their apps. Their attention to design and functionality ensures that final products meet or exceed client expectations.

3 SIDED CUBE Reviews

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Industry
Location

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
  • Other app platform UX Strategy
  • $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.

Mobile App Dev for Environmental Nonprofit

  • Mobile App Development
  • React Native Android App Development iPhone iOS App Development Hybrid & cross platform apps
  • $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
  • iPhone iOS 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
  • Android 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
  • Consumer Mobile App Development Android 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.

Showing 21-30 of 50 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.

Premier Verified means Clutch independently confirmed 3 SIDED CUBE is a legally registered business,
financially sound (Creditsafe: Very Low Risk), and backed by 49 verified client reviews averaging 4.9 stars.

Learn More
Verified Client Reviews
49
Overall Review Rating
4.9
Source
Clutch
Last Updated
November 10, 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, Bournemouth, England BH2 5LP

31 - 40

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