Top Mobile app Development Firms in the Illinois | 2022

If you're searching for a mobile app development agency in Illinois to create optimizable custom apps for your business, go no further than this list for the Best Mobile App Development Companies based in Illinois.
...Read Full Description
Review Star Image Review Star Image Review Star Image Review Star Image Review Star Image
4.9 out of 5, based on 250 real reviews.
Rankings updated: Feb 28, 2026

Certain agencies may be featured through sponsored placements. Rankings and SF Scores remain unbiased and are based solely on our evaluation methodology.

108 Companies

Filter by

18

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

18

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

View Profile Visit Website
Services Provided
info
Expertise Distribution (%)
  • 20% Mobile App Development

  • 20% IT Services

  • 20% Digital Transformation

  • 20% AI Development

  • 10% Cloud Computing Services

  • 5% Blockchain Development

  • 5% Internet of Things

Your Success is our Passion.

Strategic Systems International (SSI) is a Chicago-based advanced analytics and custom software engineering company specializing in building scalable, data-driven applications for technology companies and global enterprises. Our multidisciplinary team includes expert data scientists, software engineers, solution architects, business analysts, MBAs, and infrastructure specialists who collaborate to deliver measurable business impact. Founded in 1991 at an incubator in Evanston, Illinois by alumni of the University of Chicago and Northwestern University, SSI has since expanded with offices across Europe, Asia, and Latin America. For over three decades, we have partnered with organizations ranging from VC-backed startups to Fortune 100 enterprises, helping them innovate and accelerate growth. Our core industry expertise spans FinTech & Financial Services, HealthTech, Big Data & Analytics, Artificial Intelligence & Machine Learning, and the Internet of Things (IoT). By combining deep domain knowledge with cutting-edge technology, SSI delivers tailored digital solutions that drive efficiency, intelligence, and scalability for our clients worldwide.

View Strategic Systems International Profile
Inside Service Listing

$25-$49/hr

Hourly Rate
Inside Service Listing

$25,000+

Min. Budget Size
Inside Service Listing

50 - 249

Team size
Inside Service Listing

Illinois, USA

Location

18

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

18

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

View Profile Visit Website
Services Provided
info
Expertise Distribution (%)
  • 20% Mobile App Development

  • 20% Web Development

  • 20% Web Design

  • 10% Digital Marketing

  • 10% Ecommerce Development

  • 10% Software Development

  • 10% CMS

Innovative IT Solutions for a Smarter Digital Future

Descom Softwares Pvt. Ltd., headquartered in Bhubaneswar, India, is a leading IT company delivering innovative digital solutions that help businesses grow and scale. We specialize in web design and development, mobile app development, digital marketing, and custom software tailored to meet diverse industry needs. With a strong focus on quality, innovation, and timely delivery, we have successfully partnered with startups, enterprises, and institutions across India and international markets. Our scalable and results-driven solutions are designed to enhance user experience, boost visibility, and drive measurable success. At Descom, we are your trusted partner for digital transformation and sustainable business growth.

View Descom Softwares Pvt. Ltd. Profile
Inside Service Listing

$25-$49/hr

Hourly Rate
Inside Service Listing

$1,000+

Min. Budget Size
Inside Service Listing

10 - 49

Team size
Inside Service Listing

Illinois, USA

Location

18

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

18

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

View Profile Visit Website
Services Provided
info
Expertise Distribution (%)
  • 20% Mobile App Development

  • 20% Software Development

  • 20% Web Development

  • 20% Web Design

  • 20% IT Services

Innovative Digital Solutions for Business Growth

Frugalnova is a trusted software development company dedicated to transforming ideas into innovative digital solutions. As your partner in digital success, we specialize in web development, mobile app development, iOS and Windows applications, and progressive web apps (PWAs) that deliver seamless user experiences and measurable results. Our mission is simple—make technology accessible, scalable, and impactful for businesses of all sizes. With a talented team of developers, designers, and strategists, we provide customized solutions that align with your goals, budget, and growth vision. From intuitive UI/UX design to robust coding, we ensure every product is built with precision, functionality, and performance in mind. At Frugalnova, we follow a proven process: understanding your vision, crafting a clear roadmap, executing with creativity and technical expertise, and conducting rigorous testing to guarantee flawless delivery. Post-launch, we offer dedicated support to keep your digital solutions running at peak efficiency. Our expertise spans Android and iOS app development, Windows applications, and PWAs, helping businesses stay competitive in today’s fast-evolving digital landscape. With a passion for innovation and a commitment to excellence, Frugalnova empowers organizations to grow, innovate, and achieve long-term digital success.

View Frugalnova Innovation Profile
Inside Service Listing

$100-$149/hr

Hourly Rate
Inside Service Listing

$1,000+

Min. Budget Size
Inside Service Listing

10 - 49

Team size
Inside Service Listing

Illinois, USA

Location

18

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

18

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

View Profile Visit Website
Services Provided
info
Expertise Distribution (%)
  • 20% Mobile App Development

  • 20% Ecommerce Development

  • 10% Software Development

  • 10% Web Development

  • 10% Web Design

  • 10% Digital Marketing

  • 10% IT Services

  • 10% CMS

Driving Digital Growth with Smart Software Solutions

We are a digital transformation consulting and app development company committed to helping businesses accelerate growth through innovative technology solutions. Since 2020, our team of highly skilled professionals with 8+ years of industry experience has partnered with global brands to deliver scalable, secure, and future-ready software solutions. From custom app development to enterprise software engineering, we specialize in solving complex business challenges with cutting-edge tools and proven methodologies. Our expertise spans web development, mobile applications, cloud integration, and digital consulting, empowering startups, SMBs, and enterprises to succeed in the digital era. We are your trusted partner in transformation.

View Ruteappz Profile
Inside Service Listing

< $25/hr

Hourly Rate
Inside Service Listing

$1,000+

Min. Budget Size
Inside Service Listing

10 - 49

Team size
Inside Service Listing

Illinois, USA

Location

18

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

18

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

View Profile Visit Website
Services Provided
info
Expertise Distribution (%)
  • 20% Mobile App Development

  • 20% Ecommerce Development

  • 20% Software Development

  • 10% Web Development

  • 10% Web Design

  • 10% Digital Marketing

  • 10% AI Development

Maximizing Engagement Through Custom Web Development Solutions

Whether you're a startup, enterprise, or global organization, our approach focuses on understanding user interactions to boost engagement and satisfaction. With over 15 years of experience delivering custom web development solutions, we have completed more than 2,000 projects across industries such as healthcare, education, eCommerce, finance, media, entertainment, travel, and automotive. Our flexible solutions cater to businesses of all sizes, including 12-month interest-free payment options. From strategy and UX design to full-stack development and digital marketing, we provide end-to-end support. Schedule a free website or marketing consultation today and let us help your business grow online.

View Summit Designs Group Profile
Inside Service Listing

$100-$149/hr

Hourly Rate
Inside Service Listing

$1,000+

Min. Budget Size
Inside Service Listing

10 - 49

Team size
Inside Service Listing

Illinois, USA

Location

18

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

18

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

View Profile Visit Website
Services Provided
info
Expertise Distribution (%)
  • 20% Mobile App Development

  • 20% Web Development

  • 20% Web Design

  • 20% AI Development

  • 10% Ecommerce Development

  • 10% Software Development

We transform your innovative ideas into powerful digital solutions

At Appigma, we specialize in developing scalable, growth-oriented digital solutions that go beyond traditional app building. With over ten years of industry expertise, our dedicated team excels at transforming innovative concepts into thriving app ventures. We offer a comprehensive suite of services including product strategy, UX/UI design, and mobile and IoT development, making us the ideal partner for startups, enterprises, and non-profits alike. Our commitment to user-centric design ensures that every project we undertake is aligned with your audience’s needs and expectations. What sets Appigma apart is our people-first philosophy, where your vision drives every stage of our process. Whether you’re launching your first app or seeking to enhance an existing product, we leverage strategic innovation to propel your success and promote sustainable growth. Join forces with us to unlock the full potential of your ideas and create extraordinary digital experiences that resonate with users. Let's collaborate to turn your vision into a reality with Appigma—where your success is our mission. Contact us today to embark on your next digital journey!

View Appigma Profile
Inside Service Listing

$50-$99/hr

Hourly Rate
Inside Service Listing

$5,000+

Min. Budget Size
Inside Service Listing

10 - 49

Team size
Inside Service Listing

Illinois, USA

Location

17

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

17

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

View Profile Visit Website
Services Provided
info
Expertise Distribution (%)
  • 10% Mobile App Development

  • 20% Ecommerce Development

  • 20% Digital Marketing

  • 20% Web Development

  • 20% Web Design

  • 10% CMS

Together we can do great things

Unlock Your Brand's Potential with LLT Group: Your Premier Digital, Branding, and Marketing Agency At LLT Group, we specialize in forging authentic partnerships that elevate the human experience through innovative digital solutions. Our agency excels in crafting compelling brand narratives, designing transformative customer journeys, and executing effective marketing campaigns tailored for success. As a top-tier global digital agency, LLT Group merges creative ingenuity with data-driven strategies, inspiring consumers to realize their visions. Our dedicated in-house team of over 50 professionals, spread across three offices from coast to coast, is adept at tackling complex business challenges. We leverage cutting-edge technology and insightful data to foster brand growth and transformation, overseeing every aspect of the project life cycle. Our Comprehensive Services Include: - Data & Analytics: Business Strategy, Data Management Platforms, Cloud Solutions, and Performance Attribution. - Creative Solutions: Integrated Marketing, Content Development, CRM & Loyalty Programs, and User Experience Design. - Digital Transformation: Marketing Technology Architecture, eCommerce Solutions, Marketing Automation, and AI-Powered Strategies. Partner with LLT Group today to redefine your brand experience and drive measurable growth in the digital landscape. Let’s create the future together!

View LLT Group Profile
Inside Service Listing

N/A

Hourly Rate
Inside Service Listing

$25,000+

Min. Budget Size
Inside Service Listing

10 - 49

Team size
Inside Service Listing

Illinois, USA

Location

7

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

7

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

View Profile Visit Website
Services Provided
info
Expertise Distribution (%)
  • 60% Mobile App Development

  • 20% Web Development

  • 20% Web Design

Your toughest problems solved

Red Foundry: Your Partner in Mobile App Design and Development Since its inception in 2009, Red Foundry has emerged as a leading consulting firm specializing in mobile application design and development. Our team, comprised of experienced technology and business professionals, is dedicated to helping businesses “Mobilize Their Business” by crafting award-winning native mobile applications for both iOS and Android platforms. At Red Foundry, we understand that mobile app development can be daunting and costly. This is why we have developed a mobile-optimized methodology that caters to both aspiring entrepreneurs and established enterprises. Whether you’re looking to launch a new mobile-enabled startup or enhance your corporation’s digital transformation with innovative mobile products, we have the expertise to guide you through every step. Our mission is rooted in the belief that all applications should be beautifully designed, user-friendly, and adaptable to business needs. Every project is supported by a passionate team of skilled software engineers committed to overcoming the challenges of mobile development. With Red Foundry, you not only gain access to cutting-edge technology and proven processes but also a partner who genuinely loves what they do. Elevate your business with Red Foundry—where mobile innovation meets excellence.

View Red Foundry Profile
Inside Service Listing

$150-$199/hr

Hourly Rate
Inside Service Listing

$50,000+

Min. Budget Size
Inside Service Listing

10 - 49

Team size
Inside Service Listing

Illinois, USA

Location
Pagination
1
2
3
Pagination
Scroll To Top