Searching for a reliable mobile app development company in St. Louis, Missouri, to help you innovate? DesignRush features agencies trusted by Fortune 500 brands like IBM and Deloitte, ensuring you find quality partners. With over 1M monthly visitors and 40,000+ vetted agencies, our platform is designed to connect you with the best in the business. Compare providers by industry expertise, client type, budget, reviews, team size, and portfolio.

Best St. Louis Mobile App Developers

20 Companies - Rankings updated: July 21, 2026

DesignRush evaluates each agency using expert assessment and client feedback to inform your choices. Some featured agencies have paid placements.

United States × Missouri × St. Louis ×
  • Leading Website Design & Development Agency For The Best Digital Experience

    Leading Website Design & Development Agency For The Best Digital Experience

    American Web Designers is a professional Web Design and Digital Marketing Agency. We excel in providing full services to our clients and helping them reach their full potential along with highly successful growth...  View American Web Designers's portfolio  |  View all reviews

    Top Services:

    • Web Design
    • Branding
    • Digital Marketing
    • Logo Design
    • Web Development
    • Show more
    Location
    St. Louis, Missouri
    Number of Employees
    100 - 249
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    4 Projects Listed
  • Stress-Free Website Development, Maintenance, Logo Design, Copywriting Services.

    Stress-Free Website Development, Maintenance, Logo Design, Copywriting Services.

    STL Website Development specializes in minimalistic website development, maintenance, logo design, and copywriting services, ensuring a professional touch in every project. The agency's approach prioritizes collaboration and creativity. As such, STL Website Development brings the client's vision to life while...  View STL Website Development's portfolio

    Top Services:

    • Web Development
    • WordPress Website Design
    • Web Design
    • eCommerce Development
    • Logo Design
    • Show more
    Location
    St. Louis, Missouri
    Number of Employees
    Under 49
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    15 Projects Listed
  • Strategy, Innovation, Growth

    Strategy, Innovation, Growth

    Technology partners in the development and implementation of automated solutions on mobile and web platforms leading to digital transformation and sustainable growth...  View Tecziq Solutions's portfolio  |  View all reviews

    Top Services:

    • Web Development
    • eCommerce Development
    • Software Development
    • Mobile App Development
    • Big Data Analytics
    • Show more
    Location
    St. Louis, Missouri
    Number of Employees
    Under 49
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    2 Projects Listed
  • Trust your technology to the experts.

    Trust your technology to the experts.

    Unidev, founded in 1990, is a diversified IT company focused on applying technology to business. If you can dream it, we can build it...  View Unidev's portfolio  |  View all reviews

    Top Services:

    • Web Development
    • WordPress Website Design
    • Web Design
    • Mobile App Development
    • Software Development
    • Show more
    Location
    St. Louis, Missouri
    Number of Employees
    Under 49
    Portfolios Count
    3 Projects Listed
  • A St. Louis-based Web Design & Digital Marketing Agency

    A St. Louis-based Web Design & Digital Marketing Agency

    We are a full service web design and digital marketing agency. We create digital products and solutions to help our clients drive leads online and achieve online success. In an industry where many use smoke and mirrors to make it seem like they're doing more than they are, we rely on solid metrics to track...  View Beanstalk's portfolio  |  View all reviews

    Top Services:

    • eCommerce Development
    • WordPress Website Design
    • Web Development
    • Web Design
    • Graphic Design
    • Show more
    Location
    St. Louis, Missouri
    Number of Employees
    Under 49
    Average Hourly Rate
    $130/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    8 Projects Listed
  • Custom Software That Works in the Real World

    Custom Software That Works in the Real World

    SoftDoes builds custom software, AI, and web applications for mid-market companies that need enterprise-grade results without the overhead of an in-house team. U.S.-based leadership. Full IP ownership. No lock-in...  View Soft Does's portfolio

    Top Services:

    • Software Development
    • AI Development
    • Mobile App Development
    • Web Development
    • UI/UX Design
    • Show more
    Location
    St. Louis, Missouri
    Number of Employees
    50 - 99
    Average Hourly Rate
    $75/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    1 Project Listed
  • Ecommerce Cloud Company

    Ecommerce Cloud Company

    RaiseTech is a world-class Cloud, SaaS, and E-commerce development service provider that helps businesses to transform and keep up with the constantly growing competition across various industries. With over 10 years of experience, the RaiseTech’s team of professionals knows what tools and solutions their...  View RaiseTech's portfolio

    Top Services:

    • Web Development
    • Software Development
    • eCommerce Development
    • Mobile App Development
    • Show more
    Location
    St. Louis, Missouri
    Number of Employees
    Under 49
    Average Hourly Rate
    $45/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    6 Projects Listed
  • Mobile App Experiences That Inspire

    Mobile App Experiences That Inspire

    Qodestar is a digital studio focused on building clean, high-performing mobile apps and digital experiences. We partner with startups, growing businesses, and creative teams to transform ideas into intuitive mobile solutions through thoughtful design and development...  View Qodestar's portfolio

    Top Services:

    • Mobile App Development
    • Product Design
    • UI/UX Design
    • Digital Marketing
    • SEO
    • Show more
    Location
    St. Louis, Missouri
    Number of Employees
    Under 49
    Average Hourly Rate
    $75/hr
    Minimal Budget
    Under $1,000
    Portfolios Count
    1 Project Listed
  • Products + Advisors + Ventures

    Products + Advisors + Ventures

    Parux is a digital product studio that helps startups and scale-ups design, develop and launch high-impact digital products and ventures...  View all reviews

    Top Services:

    • Mobile App Development
    • Software Development
    • Web Development
    • Web Design
    • Branding
    • Show more
    Location
    St. Louis, Missouri
    Number of Employees
    Under 49
    Average Hourly Rate
    $199/hr
    Minimal Budget
    $25,000 - $50,000
  • Startup Minds, Innovative Solutions” Helping Enterprises Turn Ideas into Digitally Transformative Solutions...  View all reviews

    Top Services:

    • Mobile App Development
    • Software Development
    • AI Development
    • IT Services
    • Cloud Consulting
    • Show more
    Location
    St. Louis, Missouri
    Number of Employees
    100 - 249
  • Innovate. Modernize. Ocelot.

    Innovate. Modernize. Ocelot.

    Ocelot Consulting specializes in Cloud technologies, custom application development and enterprise IT security...  View all reviews

    Top Services:

    • Mobile App Development
    • Software Development
    • IT Services
    • Digital Marketing
    • Cybersecurity
    • Show more
    Location
    St. Louis, Missouri
    Number of Employees
    Under 49
  • Empowering People. Transforming Businesses.

    Empowering People. Transforming Businesses.

    We help your business improve its unique processes and realize market advantages from your data by creating software and data analytics, data mining, solutions. Our software engineers design and develop new systems as well as updates or replacements for legacy systems...  View Csg Inc profile

    Top Services:

    • Software Development
    • Mobile App Development
    • Big Data Analytics
    Location
    St. Louis, Missouri
    Number of Employees
    Under 49
  • We'll help you glow digital

    We'll help you glow digital

    Digital Radium is a St. Louis based full-service digital consulting company. We work with small and medium-size businesses by building websites that can turn visitors into loyal, lifelong customers. Our team is made up of mindful digital innovators by profession and marketers by heart. We passionately work...  View Digital Radium's portfolio  |  View all reviews

    Top Services:

    • Web Development
    • eCommerce Development
    • Mobile App Development
    • SEO
    • Show more
    Location
    St. Louis, Missouri
    Number of Employees
    Under 49
    Average Hourly Rate
    $70/hr
    Portfolios Count
    1 Project Listed
  • Bridging the Gap between people and Technology

    Bridging the Gap between people and Technology

    Alambda Systems has had the pleasure of collaborating with customers and partners from across the world on projects of varying size and complexity. In all of our work, we blend curiosity and originality with a deep understanding of what it takes to make everything function and function exceptionally well...  View Alambda Systems's portfolio  |  View all reviews

    Top Services:

    • AI Development
    • Software Development
    • IT Services
    • Web Development
    • eCommerce Development
    • Show more
    Location
    St. Louis, Missouri
    Number of Employees
    Under 49
    Average Hourly Rate
    $125/hr
    Portfolios Count
    1 Project Listed
  • Innovative Digital For Innovative Companies.

    Innovative Digital For Innovative Companies.

    Habanero is an award-winning St. Louis based Digital Agency. We specialize in Digital Strategy, Web Site Design, Web Development, and Mobile Applications...  View all reviews

    Top Services:

    • Web Development
    • Digital Marketing
    • Web Design
    • Mobile App Development
    • eCommerce Development
    • Show more
    Location
    St. Louis, Missouri
    Number of Employees
    50 - 99
  • Taking Your Digital Strategy from Concept to Creation

    Taking Your Digital Strategy from Concept to Creation

    SteadyRain assists clients in crafting innovative, remunerative digital strategies through an extensive suite of services. Our team is highly qualified in consultancy, planning, website and mobile app design and construction, as well as online marketing and other related areas...  View all reviews

    Top Services:

    • Digital Marketing
    • SEO
    • PPC
    • Software Development
    • Mobile App Development
    • Show more
    Location
    St. Louis, Missouri
    Number of Employees
    Under 49
    Average Hourly Rate
    $149/hr
  • Transforming the Way You Reach Customers

    Transforming the Way You Reach Customers

    VIVIDSITES is a long-standing, full-service digital marketing agency dedicated to innovation and providing exceptional service. With our ability to build custom or third-party software solutions at an affordable price point, we ensure organizations get the most out of their investment...  View all reviews

    Top Services:

    • Web Design
    • Web Development
    • eCommerce Development
    • UI/UX Design
    • Mobile App Development
    • Show more
    Location
    St. Louis, Missouri
    Number of Employees
    Under 49
    Average Hourly Rate
    $199/hr
    Minimal Budget
    $1,000 - $10,000
  • Premier and award wining internet marketing solutions provider!

    Premier and award wining internet marketing solutions provider!

    Altec Design has been delivering robust internet solutions to leading companies in St. Louis Mo since 2004. Unlike large companies that offer generic solutions, we believe in crafting customized products and services tailored to meet your unique requirements...  View all reviews

    Top Services:

    • Web Design
    • Web Development
    • Software Development
    • PPC
    • SEO
    • Show more
    Location
    St. Louis, Missouri
    Number of Employees
    Under 49
    Average Hourly Rate
    $99/hr
    Minimal Budget
    $1,000 - $10,000
  • Innovating Brand Experiences.

    Innovating Brand Experiences.

    HL Agency is a creative powerhouse specializing in building immersive brand experiences, delivering impactful campaigns that engage audiences and drive measurable results...  View all reviews

    Top Services:

    • Graphic Design
    • Creative Services
    • Video Production
    • Social Media Marketing
    • Web Design
    • Show more
    Location
    St. Louis, Missouri
    Number of Employees
    100 - 249
    Average Hourly Rate
    $70/hr
    Minimal Budget
    $10,000 - $25,000
  • The Agency for Ambitious Brands

    The Agency for Ambitious Brands

    Paradigm is a full-service marketing agency helping brands grow with confidence through branding, digital marketing, and web design. For 30 years, we've crafted powerful stories, built authentic connections, and delivered results that move brands forward...  View all reviews

    Top Services:

    • Digital Marketing
    • Branding
    • Web Development
    • Software Development
    • Web Design
    • Show more
    Location
    St. Louis, Missouri
    Number of Employees
    Under 49
    Average Hourly Rate
    $180/hr
    Minimal Budget
    $1,000 - $10,000

About The Author and Expert Reviewer

Selina Garcia has authored 500+ articles and edited 50+ published books in economics, law, and history. Her unique blend of experiences allows her to approach content creation from a well-rounded perspective. Currently, Selina applies her expertise to producing insightful articles on IT, software, and applications for DesignRush.

Former Development Director

Sergio is a technology leader with over six years of experience managing global teams and delivering projects across fintech, sportstech, and B2B platforms. At DesignRush, he drove product growth and development execution, building tools that speed up processes by 95% and cut costs by 35% while maintaining full uptime.