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

B2B Apps ×
  • Enterprise-class Web systems & apps as well as top-notch outsourcing services

    AI Automation & Hyperautomation experts for iGaming. With over 20 years of experience in building complex software systems, our team helps B2B and B2C iGaming companies achieve next-level efficiency through AI-driven innovation, workflow automation, and business process automation (BPA)...

    Top Services:

    • Software Development
    • Web Design
    • Web Development
    • UI/UX Design
    • SEO
    • Show more
    Location
    Warsaw, Poland
    Number of Employees
    100 - 249
    Average Hourly Rate
    $50/hr
    Portfolios Count
    22 Projects Listed

    createIT.com Services

    • Software Development
    • Web Design
    • Web Development
    • UI/UX Design
    • SEO
    • Digital Marketing
    • Digital Services
    • Mobile App Development
    • AI Development
    • Business Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Freedom United Foundation
    • ADP Swiss
    • ADP Polska
    • KöenigStahl
    • Avas Flowers Intl.
    • Löwen Play
    • Piotr i Paweł
    • top concepts GMBH
    • SoloDev
    • K30 Consulting Agency
    Data sourced from the agency's DesignRush profile

    createIT.com Reviews & Testimonials

    • Joanna Paluch-Butryn
      Joanna Paluch-Butryn Head of digital at yoho branding & digital
      5.0

      SEO Review from Joanna Paluch-Butryn

      A team that truly knows their stuff when it comes to SEO! Working with them has been smooth and effective, with noticeable results in a short period of time. Great communication and solid strategies highly recommend!

    • Monika Regulska
      Monika Regulska Head of marketing at MonRe
      5.0

      Outsourcing Review from Monika Regulska

      createIT helped me during a very challenging phase of my web development project. Thanks to the quick and efficient onboarding of an outsourced web developer, we were able to deliver the project on time.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews

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.

What track record should I look for in an app development company?

Ask for launch counts, instead of project counts. An app development company that has shipped dozens of live apps has already solved App Store review, retention, and post-launch iteration. Designli, for example, lists more than 200 product launches and traces its process back to Applits, an app studio its founders ran before the agency existed.

What are the top mobile app development companies in 2026?

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