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.
List of the Best App Development Firms
14 Companies-Rankings updated: September 03, 2026
All mobile app development firms on DesignRush have been assessed for their expertise, portfolio, and verified client reviews. Some listings may be paid.
Dont settle for off-the-shelf. Expertly crafted & custom-tailored software from the USA.
K-Optional Software: where your success is our success. From secure solutions that scale to an uncompromising focus on return on investment, we're the company that delivers. Dont settle for off-the-shelf. Expertly crafted & custom-tailored software from the USA...
Top Services:
Mobile App Development
Software Development
AI Development
Location
New York City, New York
Number of Employees
Under 49
Average Hourly Rate
$200/hr
Minimal Budget
$50,000 & Up
K-Optional Software, LLC Services
Mobile App Development
Software Development
AI Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Viapath Technologies
AllModular Systems
Assemplify
University of Arkansas
University of Texas Austin
Flowty
RepairDispatch
Data sourced from the agency's DesignRush profile
K-Optional Software, LLC Reviews & Testimonials
Michael Levy
President at Flowty
5.0★
Software Development Review from Michael Levy
Flowty is a blockchain-based platform providing various transaction services around NFTs. K-Optional wears many hats in support of Flowty including Front End, Back End, business strategy, SEO and more.
The K-Optional team has been incredible to work with. They are proactive, supportive, smart, thoughtful and, most importantly, fit seamlessly into our team and company culture. To put it succinctly, we tried to hire them full-time...and then tried to buy their company to acqui-hire them.
Some of their strengths include: reliability, responsiveness and creativity. There are many groups out there that can perform some version of the work we are looking for. There are not many groups that are responsive at all hours of the day, deliver consistently and able to present data-backed business strategies.
Jane Smarovozova
Creative Director at McSwain
5.0★
Software Development Review from Jane Smarovozova
We collaborated with K-Optional to develop a custom inventory management dashboard tailored for real estate clients. We provided the creative vision and detailed designs, while their team focused on the software development, ensuring that every element was implemented perfectly. We worked hand-in-hand flawlessly, resulting in a sleek, user-friendly interface that not only looks great but functions seamlessly. The synergy between design and development allowed us to deliver a product that exceeded client expectations, combining aesthetics with powerful functionality.
Reviews verified by DesignRush and sourced from the agency's profile
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We build mobile apps, web platforms & AI workflows for organisations doing good in the world.
3 Sided Cube is a global mobile app and digital development company with a passion for Tech For Good, championing the genius over the generic to build life-saving, life-changing digital solutions...
Top Services:
Mobile App Development
Software Development
Web Development
AI Development
Digital Services
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Location
Bournemouth, United Kingdom
Number of Employees
50 - 99
Average Hourly Rate
$150/hr
Minimal Budget
$50,000 & Up
Portfolios Count
5 Projects Listed
3 Sided Cube Services
Mobile App Development
Software Development
Web Development
AI Development
Digital Services
UI/UX Design
Digital Strategy
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
American Red Cross
Surfers Against Sewage
Omaze
Vodafone | Glastonbury Festival
LUSH
Global Forest Watch
The World Resources Institute
University Of Bristol
GDPC
Wonderbly
Data sourced from the agency's DesignRush profile
3 Sided Cube Reviews & Testimonials
Si Muddell
Review from Google
4.0★
Si Muddell's Review Sourced from Google
Fantastically positive and driven team who on every interaction you just know care deeply about a) what they do b) what they deliver and c) ultimately the experience the end user will have.
Hugely impressed with their personal, creative and energy driven approach at the pitch stage, I commissioned 3SC to help us better scope an app. Their task was to take an in-house developed app prototype, and turn it into a fully fledged technical specification with user stories, MoSCoW prioritisation, costs, and an updated look and feel; all done with audience need at the heart.
Myself and the wider team have nothing but very good things to say about 3SC. When reflecting on an agency to work with, loads say they can do it, some can actually do what they say they can do, even less do it in the spirit of real partnership and mutually respect/drive. 3SC do all of these excellently. I highly recommend them.
Oliver Morrison
Review from Google
5.0★
Oliver Morrison's Review Sourced from Google
A passionate team of insanely talented experts, producing industry leading technology for good causes. Highly recommend.
Kev Borrill
Review from Google
5.0★
Kev Borrill's Review Sourced from Google
Great Digital agency with a passion for making great mobile apps in the Tech for good industry
Reviews verified by DesignRush and sourced from the agency's profile
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Were passionate about what we do whether it is working with a new client on a strategic project, meeting users for UX testing, developing innovative solutions, or just coming together for a team lunch or social activity...
Top Services:
Software Development
Web Development
Web Design
Staff Augmentation
Digital Services
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Location
Vancouver, Canada
Number of Employees
50 - 99
Average Hourly Rate
$125/hr
Minimal Budget
$50,000 & Up
Portfolios Count
6 Projects Listed
ImageX Services
Software Development
Web Development
Web Design
Staff Augmentation
Digital Services
Digital Strategy
UI/UX Design
SEO
Mobile App Development
IT Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Stanford University
YMCA
Apple
Disney
Adidas
UCLA
Samsung
Data sourced from the agency's DesignRush profile
ImageX Reviews & Testimonials
somaye khojaste
Review from Google
5.0★
somaye khojaste's Review Sourced from Google
Amazing experience!
They delivered a clean, professional, and user-friendly website exactly as I envisioned. Great communication, fast turnaround, and top-quality work. Highly recommend!
Tallitha Campos
Review from Google
5.0★
Tallitha Campos's Review Sourced from Google
One of the top Drupal agencies. Team is smart and experienced. Easy to work with.
ImageX offers flexible working hours and has a Supportive management team who understands that family matters.
Project process is well stablished but company is open to listem and improve processes.
ImageX values social interaction between colleagues - yearly summits and co-working days.
Company offers bonus depending on quarterly profit and it's improving their benefits.
Nadine Nykolaichuk
Review from Google
5.0★
Nadine Nykolaichuk's Review Sourced from Google
It's a team of exceptionally talented and professional folks who are passionate about their work and very serious its quality. The company has many long-term, happy customers that are important players in their industries. ImageX is an active member of the Drupal community so it regularly sponsors and organizes Drupal events. The team is very inclusive — it welcomes and respects diverse cultures. Despite the long distances between the company's offices (in Canada, Brazil, and Ukraine), the atmosphere is family-like and warm. You can always feel the team's support, friendliness, and respect.
Reviews verified by DesignRush and sourced from the agency's profile
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At LKICORP®, we provide expert engineering services to clients across a range of industries. Our team of skilled engineers has experience in mechanical, electrical, and environmental engineering, among others. We work closely with our clients to understand their unique needs and develop customized solutions...
Top Services:
Mobile App Development
Software Testing
VR/AR
Blockchain
Software Development
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Location
Pittsburgh, Pennsylvania
Number of Employees
1000 & Up
Average Hourly Rate
$300/hr
Minimal Budget
$50,000 & Up
LKICORP Services
Mobile App Development
Software Testing
VR/AR
Blockchain
Software Development
AI Development
Wearables
Product Design
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Truefit is a company that caters to a range of clients, from entrepreneurs to executives, who require new software products that will engage users and expand their business. We strongly believe that highly skilled and diverse teams are the best approach to designing and creating prosperous products...
Top Services:
Mobile App Development
Software Development
Location
Pittsburgh, Pennsylvania
Number of Employees
100 - 249
Average Hourly Rate
$199/hr
Minimal Budget
$50,000 & Up
Truefit Services
Mobile App Development
Software Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Green Applications
McDonald's
CMMI Institute
Matrix
Data sourced from the agency's DesignRush profile
Truefit Reviews & Testimonials
Josh Lucas
Review from Google
5.0★
Josh Lucas's Review Sourced from Google
High quality software developers focused on methodically sussing out and delivering customer scope and specifications. Great community partners and interestingly, a values-focused technology company. Builds in modern stacks like Angular and Rails.
Reviews verified by DesignRush and sourced from the agency's profile
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Award WinnerRecipient of a Best Design Award for outstanding work.
Digital Product Agency delivering Consumer-grade UX Design for B2B & Enterprise.
EMERGE is a top-rated UX Design Agency and Digital Product Consultancy and a trusted partner for B2B leaders across technology, healthcare, and manufacturing sectors. We specialize in driving business growth by crafting elevated, engaging digital products and services...
Top Services:
UI/UX Design
Product Design
Design Services
Software Development
Mobile App Development
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Location
Portland, Oregon
Number of Employees
Under 49
Average Hourly Rate
$150/hr
Minimal Budget
$50,000 & Up
Portfolios Count
5 Projects Listed
EMERGE Services
UI/UX Design
Product Design
Design Services
Software Development
Mobile App Development
Web Development
eCommerce Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Ontoborn is a trusted software partner delivering full-stack app development, modernization, and long-term support. Trusted for over a decade by Nobel Laureateaffiliated researchers at The Ohio State University, we help enterprises across healthcare, finance, education, and more scale and innovate with...
Top Services:
Software Development
Mobile App Development
DevOps Consulting
Cloud Consulting
UI/UX Design
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Location
Columbus, Ohio
Number of Employees
Under 49
Average Hourly Rate
$25/hr
Minimal Budget
$50,000 & Up
Portfolios Count
3 Projects Listed
Ontoborn Technologies LLC Services
Software Development
Mobile App Development
DevOps Consulting
Cloud Consulting
UI/UX Design
AI Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Toptal is a highly respected network of elite talent available when needed. Our team of problem-solvers is committed to integrity, and leading companies turn to us for critical projects. We equip organizations with the tools to compete and succeed in a rapidly-evolving business world, boasting exceptional...
Top Services:
Mobile App Development
VR/AR
Blockchain
Software Development
AI Development
Show more
Location
San Francisco, California
Number of Employees
1000 & Up
Average Hourly Rate
$149/hr
Minimal Budget
$50,000 & Up
Toptal Services
Mobile App Development
VR/AR
Blockchain
Software Development
AI Development
Web Development
eCommerce Development
IT Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Emerge Haus is a pioneering software development agency focused in generative AI. We build web apps to accelerate businesses to the forefront of AI-driven innovation...
Top Services:
AI Development
Mobile App Development
Software Development
Web Development
UI/UX Design
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Location
Austin, Texas
Number of Employees
Under 49
Average Hourly Rate
$225/hr
Minimal Budget
$50,000 & Up
Emerge Haus Services
AI Development
Mobile App Development
Software Development
Web Development
UI/UX Design
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Forge Media + Design works collaboratively with our clients to craft beautifully functional experiences rooted in meaningful interactions from branding to apps and websites to signage and wayfinding. We dont settle for ordinary. Forge helps capture your customers attention while delivering functional...
Top Services:
Branding
Web Development
Mobile App Development
Graphic Design
Video Production
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Location
Toronto, Canada
Number of Employees
Under 49
Average Hourly Rate
$125/hr
Minimal Budget
$50,000 & Up
Forge Media + Design Services
Branding
Web Development
Mobile App Development
Graphic Design
Video Production
Print Design
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Four Seasons Hotels
Apple
Mandarin Oriental
Sick Kids Hospital
Toronto Region Board of Trade
Brookfield
Telus
Deloitte
Candarel
UJA Federation
Data sourced from the agency's DesignRush profile
Forge Media + Design Reviews & Testimonials
Jamie
Review from Google
5.0★
Jamie's Review Sourced from Google
Probably the best media and design company in Toronto. President is very professional and has good ethics and values.
Reviews verified by DesignRush and sourced from the agency's profile
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HOL Experiences is an award-winning user experience consultancy dedicated to transforming users into super fans through strategic and empathetic design. Utilizing a proven methodology that includes comprehensive user, market, and contextual research, we create experiences and products that resonate deeply...
Top Services:
Web Development
Web Design
UI/UX Design
Creative Services
Branding
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Location
Singapore, Singapore
Number of Employees
Under 49
Minimal Budget
$50,000 & Up
HOL Experiences Services
Web Development
Web Design
UI/UX Design
Creative Services
Branding
Digital Services
Software Development
Mobile App Development
Content Marketing
Market Research
Digital Strategy
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
We're a leading IT custom software firm with 30 years of experience in LATAM. Our elite 10% developer team delivers top-notch quality, speed, and affordability, as proven by clients like Motorola, Intel, IBM, and Oracle. We offer Software Dedicated Teams and Staff Augmentation to boost your project...
Top Services:
Software Development
Staff Augmentation
Software Testing
IT Services
HR Outsourcing
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Location
Atlanta, Georgia
Number of Employees
500 - 999
Average Hourly Rate
$40/hr
Minimal Budget
$50,000 & Up
Vates Services
Software Development
Staff Augmentation
Software Testing
IT Services
HR Outsourcing
Big Data Analytics
Web Development
Cloud Consulting
DevOps Consulting
Mobile App Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
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.
Proposals