Discover the best mobile app development companies in Illinois ranked by our expert analysts that help you reach and engage new audiences to generate more revenue for your business. Filter them by budget, portfolio, reviews, expertise, team size and more to choose a partner that can develop an application tailored to your specific requirements.
Organic rankings are determined by five factors: top services, reviews, portfolio, awards/press, and team expertise. Sponsored listings pay for a placement that appears above organic positions. Sponsorship does not affect star ratings or review content - read more on our methodology page.
Building Custom Software, Web And Mobile Solutions
TechAvidus uses an AI-integrated development workflow to efficiently build native iOS, Android, cross-platform, and eCommerce mobile apps. With 10+ years in business, 100+ in-house experts, and 300+ projects delivered across 15+ countries, its clients include Pfizer, GSK, Angi, and OrgVitality...
Top Services:
- AI Development
- Web Development
- Software Development
- Mobile App Development
- Social Media Marketing
- Show more
- Location
- Chicago, Illinois
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $18/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 56 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsTechAvidus Services
Data sourced from the agency's DesignRush profileRealty Works Poindle Online Scheduler Alliance Advisors MATE IT Origin EshopBox GateKeeper Press Client Care PFizer
TechAvidus Reviews & Testimonials

Software Development Review from Marcos Queiroz
They were very responsive and the quality of the work was good. We experienced a few challenges with the back and forth during deliveries and some unexpected delays but they were always receptive to feedback and responded well to our concerns. I'd happily recommend them, especially Megha as the Project Manager and Savan as the Developer.

SEO Review from Edmund Sohkhlet
From the start, the team was responsive, knowledgeable, and attentive to my needs. They took the time to understand my requirements and offered clear, practical solutions tailored to my situation.We are looking forward in the future expectation with the same kind of work

SEO Review from Stephen Pritchard
TechAvidus provided exceptional SEO services that significantly boosted our online presence. Their team demonstrated deep expertise in keyword research, on-page optimization, and backlink strategies, resulting in improved search engine rankings and increased organic traffic to our website. They consistently delivered detailed reports and actionable insights, keeping us informed at every stage of the process. What stood out was their proactive approach to understanding our business needs and tailoring their strategies accordingly. Their responsiveness and commitment to achieving measurable results made them a valuable partner. We highly recommend TechAvidus for anyone looking to enhance their digital visibility and grow their business.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsYour Technology Partner
SDLC Corp provides solutions for clients seeking an innovative app development agency that transforms ideas into scalable, high-performance applications. Our proven strategies drive excellence in every mobile app and digital product we handle, ensuring seamless user experiences and measurable business growth...
Top Services:
- Software Development
- Mobile App Development
- Web Development
- AI Development
- Blockchain
- Show more
- Location
- Batavia, Illinois
- Number of Employees
- 250 - 499
- Average Hourly Rate
- $30/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 53 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsSDLC Corp Services
Data sourced from the agency's DesignRush profileFujitsu Rubix EduBull Giftcast Flynk Early Salary PorchLight Group Windermere Saas Bazaar Dominos
SDLC Corp Reviews & Testimonials

Odoo Review from Navrina Singh
As a growing business in Australia, our internal systems had become difficult to manage. We partnered with SDLC CORP for Odoo development, and their team took the time to understand our workflows and bottlenecks. They automated repeated tasks, streamlined our processes, and kept communication clear at every step. This was not a one-time quick fix; it continues to improve how we run the business every day.

Software Development Review from Robert Khachatryan
Working with SDLC Corp on IoT supply chain project has helped us at Freight Right Global Logistics. Their smart tracking and fleet management have helped us work faster by reducing delays and improving delivery routes. The temperature sensors for perishables gave us peace of mind, keeping our products safe and fresh. Overall, their expertise and smooth support made the whole process easy and stress-free!

Web Design Review from Ritujoy Narayan Chowdhury
We partnered with SDLC Corp to explore automating client services like reporting and task tracking. They provided a clear and detailed roadmap for building software tailored to our needs, complete with features like client dashboards and real-time analytics. Their project management was seamless, and their ability to combine technical know-how with industry insight was outstanding. Their work has set us up to optimize our workflows and better serve our clients. We couldnt be more impressed with the collaboration!
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsTurning App Ideas Into App Businesses Since 2007
We don't just build apps. We build app businesses that actually succeed, where 80% fail within their first year. For 17 years we've perfected what actually works, having launched 300+ successful apps, including one that hit 4+ million downloads in just 60 days with sub-$3 user acquisition...
Top Services:
- Mobile App Development
- Web Development
- Software Development
- eCommerce Development
- UI/UX Design
- Show more
- Location
- Chicago, Illinois
- Number of Employees
- 100 - 249
- Portfolios Count
- 27 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsDedicated Developers Services
Data sourced from the agency's DesignRush profileAudvisor Mobile Apps Parsons Roofing ProHealth
Dedicated Developers Reviews & Testimonials

Mobile App Development Review from Robert Miller
I lost over $125,000 to developers who couldn't deliver so when I came to Dedicated Developers, I wasn't just looking for a dev shop, I was looking for a reason to trust again. They earned it fast. Their Idea To App Blueprint took everything scattered in my head and turned it into a clear, structured roadmap that actually made sense. Within six months, they delivered a sleek, fully functional MVP for our AI-powered homework assistant something a previous team couldn't pull off in over a year. What really set them apart was how early they brought in their ASO experts not as an afterthought, but from day one because they weren't just thinking about building an app, they were thinking about setting us up for a strong launch.Every deadline was met. Every question was answered. Every milestone felt like a shared win. As we approach launch, I can already see the difference a truly invested team makes the foundation is solid, the product is polished, and we're going to market with confidence we never had before. Dedicated Developers didn't treat this like a contract they treated it like a mission. After everything we went through before finding them, that meant everything. If you're serious about bringing your app idea to life and you're done gambling on the wrong team, this is the partnership that will change the trajectory of your product.

Mobile App Development Review from Ben Connors
As CEO of a relationship-focused mobile app company, I partnered with Dedicated Developers to build a dating platform centered on meaningful, long-term connections not casual swiping. I needed a true full-cycle partner, and they delivered. Before development began, they invested time in understanding the vision and created detailed product blueprints. They asked thoughtful questions, challenged assumptions, and scoped each phase carefully, ensuring smooth execution as the platform expanded. Their cross-functional team project manager, developer, UI/UX designer, QA specialist, and app store marketing expert consistently delivered milestones on time and handled complex feature requests with structure and clarity.Since launch, the app has achieved steady download growth, strong engagement and retention, and positive app store ratings a testament to the scalable, high-quality foundation they built. What stood out most was their true product-level ownership. They didn't just execute specs they contributed ideas, challenged assumptions, and helped refine decisions I hadn't fully considered. Their detailed blueprinting before each phase created clarity and saved significant time in execution. They treated the platform like their own product, and that mindset made a meaningful difference throughout a long, evolving engagement.

Mobile App Development Review from Akshath Goyal
As an advisor to a fintech startup, I've seen firsthand how Dedicated Developers operate at a level beyond typical vendors they truly act as product partners. They successfully architected and built a complex mobile platform combining social media and secure peer-to-peer payments, handling everything from blueprinting to post-launch optimization with strong ownership and technical depth. The result speaks for itself: over 1 million downloads, well received 5-star reviews, and a scalable, compliance-ready foundation. Their disciplined execution, transparency, and long-term thinking make them a valuable partner for any ambitious fintech venture.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsEngineering Intelligent Solutions Through Design and Code - Web, Mobile AI, Blockchain
SapientPro is a custom software, design, and AI development team. Since 2017, we've shipped 200+ projects in the US and EU, with offices in New York, Tallinn, and Lucerne. Most clients come back for a second project, the metric we actually care about...
Top Services:
- AI Development
- eCommerce Development
- Mobile App Development
- Web Design
- Web Development
- Show more
- Location
- Chicago, Illinois
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $40/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 20 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsSapientPro Services
Data sourced from the agency's DesignRush profileZich Solutions Contentoo HEX MasTrack Sprinkle Slab Sharks SalesLogs Piktochart The Big Data Chef Footshop
SapientPro Reviews & Testimonials

Software Development Review from Slava Berkovich
SapientPro consistently delivers high-quality work that aligns with project requirements. The team demonstrates strong expertise in Angular, TypeScript, and JavaScript. Their project management and communication practices are highly effective, with weekly client meetings held to provide updates on progress and ensure alignment.

Software Development Review from Jeremy Ott
This team was extremely responsive from the start. They pulled together a comprehensive quote for my MVP and have delivered on all of the requirements. The daily updates from the product/project manager are extremely helpful and it’s clear that the team cares about the quality of work they deliver. The engineers working on the product are always willing to make recommendations and go above and beyond to make the experience and underlying infrastructure that much better.

eCommerce Development Review from Luc Vlekken
We've had the pleasure of working closely with this development team on several projects, and the experience has been consistently excellent. Not only are they highly skilled developers, but they also think along with us both from a technical and a product/customer perspective. Their proactive attitude, reliability, and ability to translate complex requirements into elegant solutions make them a true partner rather than just a supplier. Highly recommended.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsDriving Change Through Technology - Apps, Ecommerce, Staff Aug, BPO, Next Gen Tech and more!
Trango Tech provides unique digital solutions, leveraging a team of 200+ seasoned developers to deliver seamless App Development, mobile platforms, and enterprise-grade systems. Our powerful insights optimize results across every digital transformation campaign. Explore what’s next...
Top Services:
- Software Development
- Mobile App Development
- eCommerce Development
- AI Development
- Web Design
- Show more
- Location
- Chicago, Illinois
- Number of Employees
- 100 - 249
- Portfolios Count
- 17 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsTrango Tech Services
Data sourced from the agency's DesignRush profileKhaity Shifaam KIA Click N Kollect Helpp Matchbox OAKS
Trango Tech Reviews & Testimonials

Mobile App Development Review from Ashleigh J. Shim
Jane Miller and her team at Trango Tech have been phenomenal. They design a detailed and curated plan for your app design and development. I liked that Jane always made herself available to ensure the success of our company's app. Thank you Jane!

Mobile App Development Review from Fren D. Garcia
Had a fantastic experience working with Trango Tech for our eCom & app development needs. Their expertise in creating scalable and customized online stores was evident from the beginning. They provided valuable insights and suggestions that significantly improved my website's functionality and user experience. The Trango Tech team was responsive, communicative, and dedicated to meeting our specific needs. I'm thrilled with the end result and would highly recommend Trango Tech to anyone.

Mobile App Development Review from David V. Ringer
The team at Trango Tech was very communicative and kept me informed throughout the entire development process. They provided regular updates on the progress of the project and were always available to answer any questions I had. They were very patient with my requests and made sure that my requirements were met to my satisfaction.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsSoftware, Mobile App, Games Development Company.
The App Founders is a recognized leader in the mobile app development industry that excels in building mobile apps to upscale your business and bolster your customer retention rate. Well transform your idea into a market-ready application on schedule and within budget...
Top Services:
- Mobile App Development
- Software Development
- eCommerce Development
- Product Design
- CRM Consulting
- Show more
- Location
- Niles, Illinois
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $70/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 16 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsThe App Founders Services
Data sourced from the agency's DesignRush profileAirhme Bally Rideo Your Wish On Dragon Force Ninja Tamkeen Care Color Jumper Stacker Cracker
The App Founders Reviews & Testimonials
Walter White's Review Sourced from Google
Initially, The App Founders showcased a pro-found grasp of blockchain technology and its practical applications. They adeptly elucidated intricate concepts in a manner that resonated with my non-technical background, facilitating smoother communication and active involvement in developmental discussions.
Dustin Wheeler's Review Sourced from Google
it was such a pleasure working with App Founders and just how easy and professional they were. I quickly realized how the industry is full of thirsty, needy bots and scammers I’m trying to get your attention, but tons of unsolicited phone calls and texts. Dealing with these guys was a breath of fresh and definitely showed up in value above all the rest.
Munna Alam's Review Sourced from Google
Got to say, The App Founders really impressed me! They totally nailed the design for my mobile game. Can't wait to team up with them again to make and promote the game. Definitely recommending them to anyone looking for top-notch game development services!
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsProfessional Mobile App Development Services
Our expert, award-winning staff selects the products we cover and rigorously researches and tests our top picks. If you buy through our links, we may get a commission...
Top Services:
- Mobile App Development
- Location
- Chicago, Illinois
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $55/hr
- Minimal Budget
- Under $1,000
- Portfolios Count
- 1 Project Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsMobile Application Developers Services
Data sourced from the agency's DesignRush profileThe Bridge NightLife-E Super Flex Ahyon
Turning Ideas Into Interactive Apps
AppCrops is a next-gen technology partner delivering end-to-end digital solutions for startups and enterprises. From interactive user-friendly iOS, Android or Custom Mobile applications to Web apps, ERP systems and custom software, we help transform ideas into high-performing digital products...
Top Services:
- Mobile App Development
- Web Development
- eCommerce Development
- Software Development
- Web Design
- Show more
- Location
- Chicago, Illinois
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $50/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 4 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsAppCrops Services
Data sourced from the agency's DesignRush profileFluoSpeak Sellers Route Muslim Me Linkedly Stryde Planzee TRP Mobile
AppCrops Reviews & Testimonials
Nabula Warden's Review Sourced from Google
AppCrops built a CMS for us that easily integrated with our website. Easy to manage and flexible. It made content updates much simpler. Recommended group of developers 👍
Reverie Selah's Review Sourced from Google
We used AppCrops for web development services and the result exceeded expectations. The website is fast, modern, and aligns perfectly with our brand.
Hazel Lucas's Review Sourced from Google
We worked with AppCrops for mobile app development and had a great experience. The team was professional, responsive, and delivered a high-quality app for our business. Highly recommended for anyone looking for web or app development services.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsGlobally Recognized Digital and Engineering Solutions Partner.
Named Best AI Company and Software Development Company by The Netty Awards, Opinov8 is a global technology firm with development hubs across the United States, Europe, and Egypt...
Top Services:
- Software Development
- Mobile App Development
- UI/UX Design
- Web Development
- Big Data Analytics
- Show more
- Location
- Chicago, Illinois
- Number of Employees
- 250 - 499
- Average Hourly Rate
- $42/hr
- Minimal Budget
- $50,000 & Up
- Portfolios Count
- 3 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsOpinov8 Services
Data sourced from the agency's DesignRush profileRenault WELD Health Hastee Instamotion HR DataHub Beacon United Language Group German Society for International Cooperation
AI Solutions Driving Your Business Success
Cepoch is a North American AI and software services firm with over 20 years of experience, delivering intelligent solutions and building lasting partnerships across 300+ projects and 100+ clients...
Top Services:
- AI Development
- Cybersecurity
- Software Development
- Mobile App Development
- IT Services
- Show more
- Location
- South Barrington, Illinois
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $40/hr
- Minimal Budget
- $1,000 - $10,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsCepoch Services
Data sourced from the agency's DesignRush profileJLL Sergento Microsoft Goodwill Data Delivers Caterpillar Digital Media Solutions Harper College City of Seattle Land Trust
Cepoch Reviews & Testimonials
Stephanie Velasco's Review Sourced from Google
We've had a great experience working with Cepoch. Their team is responsive, professional and genuinely focused on helping our business operate more efficiently. They took the time to understand our needs, streamlined our lead response process and made communication more organized. We've noticed great improvement in our workflow and appreciate how proactive they are in providing support. I highly recommend Cepoch.
Derek's Review Sourced from Google
Flamingo Bahamas is an outstanding platform that truly highlights the best of what local businesses have to offer. It’s user-friendly, well-organized, and makes discovering deals and services across the island incredibly easy. What stands out most is how it connects customers directly with businesses, giving both sides real value—customers save money while businesses gain visibility.
Derek Stuart's Review Sourced from Google
I’ve had an amazing experience with Flamingo Bahamas! The platform makes it incredibly easy to discover great deals from local businesses all in one place. It’s user-friendly, convenient, and actually helps you save money while supporting Bahamian businesses at the same time.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsTurning Futility Into Utility Since 2008
Dunsen Design Inc. is a web design and digital marketing company based in West Lafayette, Indiana, serving the Greater Lafayette area and surrounding regions, including Chicagoland. Founded in 2008 by Purdue University graduate Jeff Sunden, the company began with a focus on graphic and web design before...
Top Services:
- Web Design
- Web Development
- SEO
- Social Media Marketing
- Mobile App Development
- Show more
- Location
- Plainfield, Illinois
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $180/hr
- Minimal Budget
- $1,000 - $10,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsDunsen Design Inc. Services
Data sourced from the agency's DesignRush profileMaurer's Market Maurer's Urban Market Lafayette Limo Starfish Animal Rescue American Agra Curtains Milnter Community Health Center Alzheimer's Care Coalition Rugged Xscape Sullivan & Fortner Roofing Teragraphics Ink
Empowering Innovation Driving Transformation
With 20+ years of experience, Atvantiq has been a trusted leader in delivering innovative solutions across mobile and web application development, UI/UX Design, full-stack systems, Telecom, AI/ML, Gen AI, blockchain and crypto platforms, as well as DevOps and security-focused architectures...
Top Services:
- Mobile App Development
- Cybersecurity
- Web Development
- eCommerce Development
- HR Outsourcing
- Show more
- Location
- Chicago, Illinois
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $22/hr
- Minimal Budget
- $1,000 - $10,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsAtvantiq Networks Private Limted Services
Data sourced from the agency's DesignRush profileNokia TATA Jio Ericsson Paloatlo Networks Cerogon HFCL
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