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.
Best Missouri Mobile App Developers
44 Companies - Rankings updated: August 14, 2026
Every agency on DesignRush meets evaluation criteria around expertise and client feedback to empower informed choices. Some listings include paid partnerships.
Tepia is a software company founded in 2012 with over 30 years of experience in web and mobile app development. We are a passionate and agile team of developers, designers, and strategists who are consistently pushing the boundaries of technology...
Keyhole is a company that specializes in quality software development services. They offer full-stack developers skilled in Java development, .NET, and JavaScript technologies, along with product development teams that manage software projects from design to launch, including architects, developers, project...
We are a young enterprising IT Services firm based in Mumbai, India offering web design.
We are a young enterprising IT Services firm based in Mumbai, India offering web design.
The business includes web design, web development, mobile application development, and software development. We aim to deliver maximum satisfaction to our clients by providing unique mobile design and software development services at affordable prices...
Helping companies transform for success in the digital future
Helping companies transform for success in the digital future
The effects of digital transformation go beyond business and into the consulting industry itself. The old leaders in consulting cannot adapt to the speed of change in a digitally disrupted world. A new model of consultancy has emerged: outcome-focused, collaborative, and built for continuous, iterative...
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...
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...
Active Logic is a premium custom software development agency with 100% US-based software engineers. We locally staff our offices with Senior Software Developers and we strive to deliver exceptional digital products through active communication and collaboration with our clients...
FMK Agency is a fractional marketing team that acts as an extension to your brand. We’re committed to providing expertise in all phases of the lifecycle of digital solutions so we can better serve our clients and their brands. By taking on projects and challenges in all industries, we’re determined to...
Technology partners in the development and implementation of automated solutions on mobile and web platforms leading to digital transformation and sustainable growth...
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...
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...
Founded in 2007, Binary Noggin is a team of software engineers who serve as a trusted extension of your team, helping your company succeed through collaboration. We forge customizable solutions using Agile methodologies and our mastery of Elixir, Ruby and other open source technologies...
CUBYCODE is a team of tech professionals providing exceptional services since 2014. Specializing in web and app development, quality assurance and testing, we are committed to delivering data-driven results to mid-sized organizations, startups and established corporate companies...
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...
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...
In order to support your pitch, we create prototypes, proof-of-concepts, and miniature applications while you create business plans and seek funding...
Since 2001, GreenTie.com has been the trusted Internet Support Partner of the midwest’s top corporate, non-profit and health organizations. Our agency’s ongoing success stems from the ability to inspire user engagement and quickly evolve the client’s website to their most effective marketing arm. We are...
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...
Crema is a design consultancy that helps forward-thinking leaders discover, understand, and execute.
Crema is a design consultancy that helps forward-thinking leaders discover, understand, and execute.
Crema is a design consultancy that helps companies build the custom software they need to compete in todays market. Our product teams blend business strategy and technical expertise to create solutions for our clients most pressing needs...
Reliable partner of your digital transformation and innovation journey.
Reliable partner of your digital transformation and innovation journey.
Ribbitz LLC provides the right team to make your project related to software development, mobile app development, web application development, e-commerce solutions, Software quality assurance, and Digital Marketing...
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...
Viagio Technologies, previously known as Artisan Technology Group, was founded in 2011 and has earned a strong reputation for effectively addressing intricate business dilemmas through innovative, high-quality and creative approaches...
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...
Habanero is an award-winning St. Louis based Digital Agency. We specialize in Digital Strategy, Web Site Design, Web Development, and Mobile Applications...
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...
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...
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...
HL Agency is a creative powerhouse specializing in building immersive brand experiences, delivering impactful campaigns that engage audiences and drive measurable results...
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...
DigitalGrowthUs is an IT service provide in US. The company is professionally structured to provide SEO Services, Social Media Marketing, PPC Advertising, and Email Marketing, Graphic Designing, Logo Creation...
The Joseph Company is a trusted technology partner providing custom web development & IT services to businesses across St. Louis and Southern Illinois. Headquartered in Arnold, Missouri, we serve clients throughout the region with a commitment to excellence, responsiveness, and long-term partnership...
TxLabz is a fast-moving, quality-driven technology company focused on delivering exceptional IT services and products with a strong commitment to client success. Trusted by global leaders, and over 500 innovative startups, we've earned a reputation for reliability and impact...
Pixaware Technology Solutions Pvt. Ltd. is a full-service digital solutions company specializing in UI/UX Design Services, WordPress Website Development, and Mobile App Design Services. With over a decade of experience, our team is passionate about creating user-first designs, high-performance websites, and...
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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