Connect with vetted app development companies that build custom solutions designed to drive retention, engagement, and revenue. Filter agencies by budget, team size, and location to find the right partner for your project.

List of the Best App Development Firms

2 Companies-Rankings updated: September 03, 2026

All mobile app development firms on DesignRush have been assessed for their expertise, portfolio, and verified client reviews. Some listings may be paid.

Public Safety × $50,000 & Up ×
  • We build mobile apps, web platforms & AI workflows for organisations doing good in the world.

    3 Sided Cube is a global mobile app and digital development company with a passion for Tech For Good, championing the genius over the generic to build life-saving, life-changing digital solutions...

    Top Services:

    • Mobile App Development
    • Software Development
    • Web Development
    • AI Development
    • Digital Services
    • Show more
    Location
    Bournemouth, United Kingdom
    Number of Employees
    50 - 99
    Average Hourly Rate
    $150/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    5 Projects Listed

    3 Sided Cube Services

    • Mobile App Development
    • Software Development
    • Web Development
    • AI Development
    • Digital Services
    • UI/UX Design
    • Digital Strategy
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • American Red Cross
    • Surfers Against Sewage
    • Omaze
    • Vodafone | Glastonbury Festival
    • LUSH
    • Global Forest Watch
    • The World Resources Institute
    • University Of Bristol
    • GDPC
    • Wonderbly
    Data sourced from the agency's DesignRush profile

    3 Sided Cube Reviews & Testimonials

    • Si Muddell
      Si Muddell Review from Google
      4.0

      Si Muddell's Review Sourced from Google

      Fantastically positive and driven team who on every interaction you just know care deeply about a) what they do b) what they deliver and c) ultimately the experience the end user will have.Hugely impressed with their personal, creative and energy driven approach at the pitch stage, I commissioned 3SC to help us better scope an app. Their task was to take an in-house developed app prototype, and turn it into a fully fledged technical specification with user stories, MoSCoW prioritisation, costs, and an updated look and feel; all done with audience need at the heart.Myself and the wider team have nothing but very good things to say about 3SC. When reflecting on an agency to work with, loads say they can do it, some can actually do what they say they can do, even less do it in the spirit of real partnership and mutually respect/drive. 3SC do all of these excellently. I highly recommend them.

    • Oliver Morrison
      Oliver Morrison Review from Google
      5.0

      Oliver Morrison's Review Sourced from Google

      A passionate team of insanely talented experts, producing industry leading technology for good causes. Highly recommend.

    • Kev Borrill
      Kev Borrill Review from Google
      5.0

      Kev Borrill's Review Sourced from Google

      Great Digital agency with a passion for making great mobile apps in the Tech for good industry

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Specialized in Methodologies, Products & Services

    Novacomp is a leading regional IT services company with over 25 years of experience assisting businesses in their digital transformation through solutions such as IT outsourcing, dedicated teams, IT consulting, staff augmentation, QA and software testing, app development, cloud services and more...

    Top Services:

    • Software Development
    • Mobile App Development
    • Software Testing
    • IT Services
    • Staff Augmentation
    • Show more
    Location
    Miami, Florida
    Number of Employees
    500 - 999
    Average Hourly Rate
    $40/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    5 Projects Listed

    Novacomp Services

    • Software Development
    • Mobile App Development
    • Software Testing
    • IT Services
    • Staff Augmentation
    • Cybersecurity
    • UI/UX Design
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Banistmo
    • Grupo ICE
    • Banco Popular
    • Seguro Social de Costa Rica
    • Scotiabank
    • Banco Lafise
    • Davivienda
    • Instituto Costarricense de Electricidad
    • Bomberos de Costa Rica
    Data sourced from the agency's DesignRush profile

Frequently Asked Questions About App Development Companies

What services do app development companies typically offer?

App development companies usually handle strategy, UI/UX design, development, testing, launch, and ongoing maintenance. Some also provide product research and app store optimization.

How much does it cost to hire an app development company?

App development agencies typically charge between $30,000 and $500,000+, depending on the scope and complexity of the project.

Typical custom app costs by scope include:

  • Simple app: $10,000 to $35,000
  • Medium-complexity app: $35,000 to $150,000
  • Complex app: $150,000 to $300,000+

How long does it take to develop a mobile app?

Most apps take around 3 to 7 months to develop, though the timeline depends on complexity, features, technology, and the development team. Changes in scope, integrations, and testing requirements can also extend the timeline.

  • Simple apps: a few weeks to 3 months
  • Medium-complexity apps: 3 to 7 months
  • Complex apps: 7 to 12+ months 

How do I choose the right app development company?

Look at relevant experience, past projects, technical expertise, communication, and post-launch support. The company should also understand your business goals and target users.

What should I look for in an app development company’s portfolio?

Check whether they have built apps similar to yours and review the usability, design quality, and functionality of their work. Pay attention to projects in your industry or with comparable technical requirements.

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