Top 50 Mobile App Developers in St. Louis
The Best of December 2025Looking for a top mobile app development company in St. Louis?
Building a mobile app is expensive. In fact, it can cost $10,000 to $150,000, unless you want an out-of-the-box solution with a DIY app builder. So, choosing the right app developer is important because it can save you time and money and result in an app that makes your business stand out.
As you begin the process of hiring an app development company, remember to define the type of app you want before starting conversations with developers. How complex your app idea is will determine your budget and the skill level you need in an app developer. Then, once conversations begin, ask for portfolio items, reviews, and references. Be sure to bring up timeline, too, so you align on expectations.
Overall, with about 90% of time on mobile spent in apps, investing in a mobile app for your business may help attract customers and get your brand in front of more people.
To assist you in your search for a partner, we’ve compiled this list of the top mobile app developers in St. Louis. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best St. Louis Mobile App Development Companies
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31Undisclosed2 - 9 employeesO'Fallon, ILLN2S Consulting LLC is an other IT consulting and SI and application development firm founded in 2020. The company offers other IT consulting and SI and Mobile App Development, and is small.Read More
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32Undisclosed2 - 9 employeesSt. Louis, MOCode St. Louis, a SEO services firm, is headquartered in St. Louis, Missouri. Their services include Search Engine Optimization and UX/UI Design.Read More
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33Undisclosed2 - 9 employeesTown and Country, MOBecurity is a mobile application development company. The Town and Country, Missouri-based firm focuses on Mobile App Development and Web Development.Read More
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34UndisclosedFreelancer employeesOlivette, MOAnalytica Enterprise Solutions is a small Olivette, Missouri-based UX company. Their services include UX/UI Design and Web Development.Read More
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35Undisclosed50 - 249 employeesChesterfield, MOTDK Technologies, a midsize web design agency, is headquartered in Chesterfield, Missouri. Their services include Web Design and UX/UI Design.Read More
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36$5,000+10 - 49 employeesSt. Louis, MOLaunched in 1995, Habanero is a SEO company. Their services include Search Engine Optimization and Web Design.Read More
Clients
Sweetology -
37Undisclosed50 - 249 employeesChesterfield, MOArtificial intelligence development company Wise Equation Solutions Inc. Was launched in 2006. The midsize team offers Artificial Intelligence and UX/UI Design.Read More
Industries
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38Undisclosed2 - 9 employeesSt. Peters, MOClient Studio is a small St. Peters, Missouri-based social media marketing company. The team specializes in Social Media Marketing and Search Engine Optimization.Read More
Industries
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39Undisclosed2 - 9 employeesCottleville, MODigitalGrowthus is a SEO agency founded in 2015. Their team offers Search Engine Optimization and Custom Software Development.Read More
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40Undisclosed10 - 49 employeesSt. Louis, MOIn Honolulu, Hawaii and St. Louis, Missouri, Ikayzo is a small application development firm and web design agency. Their services include Mobile App Development and Web Design.Read More
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41Undisclosed10 - 49 employeesSt. Louis, MOLaunched in 2013, Grain Inc. Is a branding agency. The firm specializes in Branding and Logo, and is small.Read More
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42$5,000+2 - 9 employeesBallwin, MOSmall graphic design agency Innovative Technologies, is in Ballwin, Missouri. The team specializes in Graphic Design and Marketing Strategy.Read More
Clients
Mid Missouri;Bank -
43Undisclosed10 - 49 employeesSt. Louis, MOEmpire Client Generator is a small Digital Strategy company. Founded in 2016, the team focuses on Digital Strategy and Web Design.Read More
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44Undisclosed10 - 49 employeesSt. Louis, MOSmall Marketing Strategy company Clarion Marketing, is in St. Louis, Missouri. Their services include Marketing Strategy and Video Production.Read More
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45Undisclosed2 - 9 employeesBrentwood, MOSmall branding agency Helicx, is headquartered in Brentwood, Missouri. The team provides Branding and Web Design.Read More
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