Top iPhone App Development Companies in St. Louis

Researched by:Goodfirms Research TeamUpdated:September 4, 2026

Goodfirms has reviewed 15 iPhone App Development Companies in St. Louis as of September 2026. The top-ranked firm is Digital Radium (5.0 stars, 1 verified reviews, $50 - $99/hr, founded 2015, St. Louis). Across the category, the median hourly rate is $125, median client rating is 5, and 25% of firms employ 50+ members. Explore the vetted iPhone App Development Companies in St. Louis below, compare their strengths, and connect with the provider best suited to your requirements.

15Verified firms
$125/hrMedian hourly rate
5 ★Median rating
25%Have 50+ members

Goodfirms has verified 15 iPhone App Development Companies in St. Louis - part of 22,842+ iPhone App Development Companies, each passing Goodfirms' 4-step verification process (background check, client interviews, portfolio audit, ongoing quality review). Listings marked "Sponsored" are agencies that pay for premium placement - sponsorship does not affect star ratings or review content.

Top 10 at Glance

Compare the highest-ranked firms first side by side.

Rank
Company
Rating
Reviews
Hourly Rate
Team Size
Founded
Headquarters
Action

List of Best iPhone App Development Companies in St. Louis

Find a iPhone Company Near you
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Service
Hourly Rate
Employees
ReviewsAll Companies
Industry
Client Type
  • Digital Radium is a St. Louis based full-service digital consulting company. We work with small and medium-sized 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 ... read Digital Radium reviews & insights

    $50 - $99/hr
    2 - 9
    2015
    St. Louis, United States
    Digital Radium helped us with our WordPress website - Anonymous
  • Engage helps you turn your ideas into elegantly crafted software, web and mobile solutions. Founded in 1999, Engage has a long and established history in software development and consulting. All of our staff - designers, developers, strategists and project managers - live and work in ... read Engage reviews & insights

    $100 - $149/hr
    10 - 49
    1999
    St. Louis, United States
    Engage was a Great Vendor - Nick Paige
  • Integrity was founded in 2001 in St. Louis, Missouri. Since then, we’ve expanded to 6 offices around the US working in over 50 strategic consulting, marketing and technology disciplines across dozens of industries and markets. We optimize and advance businesses by offering the technical scope ... read Integrity reviews & insights

    $100 - $149/hr
    10 - 49
    2001
    St. Louis, United States
    Excellent and Knowledgeable Service - Marketing Services Coordinator
  • Asynchrony is an innovative software technology firm focused on the agile delivery of custom software applications. We design and develop rich-featured mobile applications from the ground up to help clients deliver on their mobility vision and support their mobile platform initiatives. Customers include Global 2000 companies and Government agencies.

    $50 - $99/hr
    250 - 999
    1999
    St. Louis, United States
  • Paradigm New Media Group is your strategic partner in the digital realm. As a dynamic digital marketing agency, we specialize in crafting data-driven strategies, creative campaigns, and web solutions that drive businesses forward. Our dedicated team of experts combines creativity with analytical precision to deliver solutions tailored to your unique needs. From SEO and content ... read Paradigm New Media Group reviews & insights

    NA
    10 - 49
    1995
    St. Louis, United States
  • We are a St. Louis based independent software development studio founded on the belief that great solutions are the product of a flexible approach. We primarily partner with marketing & advertising agencies to build digital projects and our experienced teams craft customized mobile apps, websites, and software that meet specific needs.

    $25 - $49/hr
    2 - 9
    2010
    St. Louis, United States
  • CSG thrives on serving our clients by creating great technology solutions. We are passionate about our craft and believe it’s important to grow as people, consultants, teammates, and engineers. We develop lasting relationships with each other and our clients. By analyzing data across the organization, CSG will uncover connections and opportunities that impact the entire ... read Cornerstone Solutions Group reviews & insights

    $50 - $99/hr
    10 - 49
    1990
    St. Louis, United States
  • Altec Design LLC is a St. Louis Based web design company specializing in custom website design and hosting. Our mission is to help small and Medium sized business acquire or improve their presence on the web. We are also close partners with Invex Design LLC which is based out of the Chicago Suburbs.

    < $25/hr
    2 - 9
    2006
    St. Louis, United States
  • PC40 Interactive is a digital solutions agency founded in 2006 by Joseph Clote. Located in St.Louis but serving a global community, PC40 has helped businesses solve problems and grow through interactive design and advanced marketing strategies. Our suite of integrated marketing solutions include the following: Branding Identity Development Advertising Website & App Development Driven by ... read PC40 Interactive reviews & insights

    $50 - $99/hr
    50 - 249
    2006
    St. Louis, United States
  • Gemini is a leading IT solutions provider. We offer consulting, services and cutting-edge mobile and cloud-based applications for all your business needs. We develop and implement next-generation technology for enterprises to accelerate and scale their digital transformation journey. To know more contact us at https://www.gemini-us.com/contact

    NA
    250 - 999
    2010
    St. Louis, United States
  • VIDSITES is a full-service digital marketing agency supported by over 24 years of innovation in the industry. We're unique because we have the flexibility to build your project with 3rd-party SAS software, or we can build a custom solution to eliminate licensing fees. We work with major bands like Reebok, Purina, Rawlings, Berkshire Hathaway, Girl ... read VIVIDSITES reviews & insights

    $150 - $199/hr
    10 - 49
    1999
    St. Louis, United States
  • We build high-performance, real-time, mission-critical software solutions systems leveraging today's leading-edge technologies in the areas of blockchain, machine learning, industrial IoT, cloud services, serverless computing, and more. Our solutions bring massive scalability, interoperability, and sustainability to our clients around the globe. Please visit objectcomputing.com to learn more about our software engineering solutions.

    $100 - $149/hr
    50 - 249
    1993
    St. Louis, United States
  • Application and software development is our core business. We have been designing and creating custom business applications for over 2 decades. We specialize in customized software application development that evolves with your business. Our software development services provide you with alternatives to off-the-shelf software options. If a software package is not available in your industry ... read Swip Systems reviews & insights

    $100 - $149/hr
    10 - 49
    1995
    St. Louis, United States
  • TPI strives to do great work, make a meaningful impact on our clients’ businesses, and positively affect everyone we interact with. At the core of every great project is a great relationship, one where collaboration combined with your vision and our expertise produces outstanding results. Enhance your online presence. Our websites reflect your brand. We ... read Thoughtprocess Interactive reviews & insights

    $100 - $149/hr
    10 - 49
    1999
    St. Louis, United States
  • Design. Code. Rank. Grow. Hexxen is a national full-service agency specializing in SEO, Marketing, Web Design, Web Development, Custom Software, and App Development. We set new standards in modern marketing, design, SEO, and software with innovation and excellence. As a strategic partner for businesses, professionals, and large organizations across sectors like legal, home services, healthcare, ... read Hexxen reviews & insights

    $150 - $199/hr
    2 - 9
    2002
    St. Louis, United States

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1 cities with the best Value Score for hiring.

Ranked by a composite blending firm count (supply), average rating (quality), and average hourly rate (cost). Affordability is weighted highest (50%), so this surfaces genuinely affordable destinations - not just the biggest markets.

Where the firms are.

Bubble size shows how many firms each country has; colour shows its average hourly rate. Tap any country for its firm count, average rate, rating, and Value Score.

Loading map…

All cities ranked by Value Score.

Every city in scope, ranked by Value Score.

CityFirmsAvg RateAvg RatingValue ScoreAction
USSt. Louis16$98/hr565View firms
USSt. Louis
16 firms$98/hr5
Value Score65 / 100

Match by work-hour overlap with your team.

Cost matters - but so does being able to actually talk to your developer during your workday. Here are the best destinations for each major hub.

If you're in US (PT/ET)Recommended

Look for nearshore LATAM partners - same-day collaboration, similar time zones, and 50-60% cost savings vs domestic.

MXMexico~7h overlap
ARArgentina~6h overlap
BRBrazil~5h overlap
CACanada~8h overlap
If you're in Europe (CET/GMT)Recommended

Eastern Europe is your sweet spot - 1-2h time zone shift, EU GDPR alignment, and 40-50% lower rates than Western Europe.

PLPoland~8h overlap
UAUkraine~7h overlap
RORomania~7h overlap
ZASouth Africa~8h overlap

How firms are placed on the matrix

Every position on this chart is the output of the Goodfirms ranking algorithm - a weighted composite of signals across two axes. The algorithm is recomputed regularly and is fully documented.

Sponsorship does not affect placement. PRO members receive visible badges and ad placements, but their algorithmic scores are calculated identically to free listings.

Read the full methodology
Algorithm at a glance
1
X-axis (Core Competencies): Service Focus Ratio + Portfolio Depth + Quality + Experience
2
Y-axis (360-Performance): Client Reviews + Market Presence + Goodfirms Score
3
Missing signals are excluded from a firm's score, not substituted with defaults - weights redistribute across remaining inputs
4
Recency decay over the last 18 months keeps stale reviews from dominating
5
Eligibility floor: ≥ 1 published review in this category scope

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Cities with the best Value Score for mobile app development hiring.

Ranked by a composite score blending firm count (supply), average rating (quality), and median hourly rate (cost). Affordability is weighted highest (50%), so this list surfaces actually affordable destinations rather than just-big markets.

Budget leader
St. Louis · $0-24/hr

1 firms in this tier - more than any other city. Top picks: Altec Design.

Mid-tier leader
St. Louis · $50-99/hr

4 firms in this tier - more than any other city, averaging 5.0 ★. Top picks: Digital Radium, Asynchrony Labs, Cornerstone Solutions Group.

Top tier leader
St. Louis · $150+/hr

2 firms in this tier - more than any other city. Top picks: VIVIDSITES, Hexxen.

Loading heatmap…
Cell intensity (firm density):
Low
High
Best Value marks the densest, highest-rated, most-affordable cell per row

How the heatmap is built

Every cell in the grid above is the count of firms in (place × hourly-rate tier). Firms are placed by their published hourly rate; those without a disclosed rate are not plotted.

Top company names per cell are surfaced by Value Score - a weighted blend of affordability (50%) + rating (35%) + review volume (15%).

The "Best" ribbon marks the cell in each row where firm density, ratings, and affordability line up best - the densest, highest-quality combination.

Read the full methodology
Value Score · per firm
ValueScore = 0.50 × Affordability
+ 0.35 × Rating
+ 0.15 × Review Volume
// All sub-scores normalized 0-100
// Affordability = (1 - rate/$200) × 100
// Rating = (rating - 3) / 2 × 100
// Volume = log10(reviews+1)/log10(200) × 100

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Browse all mobile app development firms in your chosen country - or let our AI hand-pick 3 matches based on your project, budget, and time-zone preference.

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