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
10 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.
Software Outsourcing & Development | 500+ Active Clients
Founded in 2009 by Nacho de Marco and Paul Azorín, BairesDev provides top 1% tech talent to a range of clients, from startups to Fortune 500 companies...
Top Services:
Software Development
Web Development
UI/UX Design
Mobile App Development
Software Testing
Show more
Location
San Francisco, California
Number of Employees
1000 & Up
Average Hourly Rate
$50/hr
Minimal Budget
$50,000 & Up
Portfolios Count
5 Projects Listed
BairesDev Services
Software Development
Web Development
UI/UX Design
Mobile App Development
Software Testing
Web Design
Staff Augmentation
Product Design
ERP Consulting
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Google
Salesforce
IBM
Autodesk
Rolls-Royce
SiriuXM
Motorola
Burger King
Chime
Data sourced from the agency's DesignRush profile
BairesDev Reviews & Testimonials
Undisclosed
Director of e-commerce solutions at URBN
5.0★
Web Development Review from Undisclosed
We were truly impressed by the BairesDev team's expertise, work ethic, and eagerness to learn. The agency quickly adapted to our corporate culture and integrated seamlessly. When tasked to work on a new platform, it provided solutions within a week. It's like the software version of a versatile and powerful utility infielder.
Undisclosed
Engineering Manager at Pinterest
5.0★
Staff Augmentation Review from Undisclosed
BairesDev engineers are the soul of the team. They’re able to identify dependencies and figure out solutions quickly. They strongly exceeded my expectations.
Undisclosed
Team Leader at Avigilon
5.0★
Web Development Review from Undisclosed
Following consultations with the BairesDev team, we recognized that the primary objective was to localize the system and concentrate on enhancing the UI, while also upgrading tools to uphold a high-performance analytics system. Witnessing its expertise and ability to address specific issues greatly alleviated our security platform's primary concerns.
Reviews verified by DesignRush and sourced from the agency's profile
View All Reviews
BlackBox Vision is a boutique digital product development studio based in Buenos Aires, Argentina, dedicated to helping startups and scale-ups bring their ideas to life...
Top Services:
Mobile App Development
Software Development
Product Design
UI/UX Design
VR/AR
Show more
Location
Victoria, Argentina
Number of Employees
Under 49
Average Hourly Rate
$50/hr
Minimal Budget
$50,000 & Up
Portfolios Count
13 Projects Listed
BlackBox Vision Services
Mobile App Development
Software Development
Product Design
UI/UX Design
VR/AR
Blockchain
AI Development
IoT
Wearables
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
hedgehog lab is a global digital product consultancy that partners with brands and enterprises to help them achieve their business goals using emerging technologies...
Top Services:
Mobile App Development
Location
Newcastle, United Kingdom
Number of Employees
100 - 249
Average Hourly Rate
$150/hr
Minimal Budget
$50,000 & Up
hedgehog lab Services
Mobile App Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Natwest
Santander
Standard Life
Deliveroo
Lasership
Data sourced from the agency's DesignRush profile
hedgehog lab Reviews & Testimonials
Philip Plamenov
Review from Google
5.0★
Philip Plamenov's Review Sourced from Google
Great company to work with. If you want great service and friendly team this is your place!
Jack Deverson
Review from Google
1.0★
Jack Deverson's Review Sourced from Google
I'm sure they do cracking development work, but all I've received, on two occasions, is really poor customer service. Both times I've gone to them asking for a quote, I've been given the impression that it was an imposition - either insinuating that we wouldn't be able to afford their rates, or ignoring the enquiry altogether for a few weeks before palming us off after the quote deadline. ("We didn't think it would be the right kind of project for us anyway.") I've found their communications brusque, bordering on rude, and as a business in the region seeking to work with other local organisations, frankly I expected better given their reputation. The small details are important.
Reviews verified by DesignRush and sourced from the agency's profile
View All Reviews
Atwix is a full-service Magento Adobe Commerce agency with a depth of Magento expertise that is simply unmatched...
Top Services:
eCommerce Development
SEO
Mobile App Development
Location
Chicago, Illinois
Number of Employees
50 - 99
Average Hourly Rate
$150/hr
Minimal Budget
$50,000 & Up
Portfolios Count
6 Projects Listed
Atwix Services
eCommerce Development
SEO
Mobile App Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Byrne
Wyze
Cabinets
Coyuchi
Data sourced from the agency's DesignRush profile
Atwix Reviews & Testimonials
Matthew Timion
Review from Google
5.0★
Matthew Timion's Review Sourced from Google
I had the privilege of working with Atwix during a Magento 1 -> Magento 2 (Adobe Commerce) migration. Our e-commerce product was already highly customized and a bit "out of the box" in terms of implementation.
Atwix was professional, detail oriented, and regularly met with us to ensure all of our needs were met, the product was fully scoped, and helped ensure success. They went above and beyond in terms of developer resources and expertise.
Their deep knowledge of the Adobe Commerce platform helped reduce costs and made the whole process wonderful.
Eric Gozenput
Review from Google
5.0★
Eric Gozenput's Review Sourced from Google
Atwix has some of the best Magento developers we have worked with. The whole team is a pleasure to work with and extremely professional. Highly recommended!
Anton Kril
Review from Google
5.0★
Anton Kril's Review Sourced from Google
Having known Slava and a bunch of people from his team for the better part of a decade, I can attest to their remarkable dedication, intelligence, and leadership in the ecommerce development realm. It's no surprise to see Atwix being recognized for their work. This photo from Meet Magento New York where they receive a reward on behalf of their customer is just one of the many testaments to the outstanding service and commitment they provide to their clients. Congratulations, Slava and team! Keep setting the standard in the industry.
P.S. Slava always knows which camera to look at.
Reviews verified by DesignRush and sourced from the agency's profile
View All Reviews
Creating Mobile Apps That Digitally Transform Business
Sugar Rush is a Mobile App Agency that provides mobile app development services to clients in the UK, Ireland, Europe, and the US. They have received recognition as the "UK App Agency of the Year" and have won 'App of The Year' awards for three consecutive years in Northern Ireland...
Top Services:
Mobile App Development
Web Design
Software Development
VR/AR
Show more
Location
Belfast, United Kingdom
Number of Employees
Under 49
Minimal Budget
$50,000 & Up
Portfolios Count
1 Project Listed
Sugar Rush Services
Mobile App Development
Web Design
Software Development
VR/AR
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
BUNZL
BBC
Radio Times
TopGear
Game of Thrones
Stryker
Olympus
Angling Direct
Data sourced from the agency's DesignRush profile
Sugar Rush Reviews & Testimonials
Dean Lyttle
Review from Google
5.0★
Dean Lyttle's Review Sourced from Google
On behalf of AES Global Ltd -
Moving our app development locally was a key focus for us in 2020. After extensive research into local companies and speaking to them all Ali, Danielle and the whole team at Sugar Rush most definitely came out on top.
Their company culture and attention to detail was what caught our eye first which was followed closely on their project management skills.
We are currently working on our 4th project together and i am still amazed with their dedication to learn our product inside out so they truly understand how it should function with the app and provide new ideas and better flows than what we had before.
We have dealt with a large number of different colleagues within Sugar Rush and every single one of them are a credit to the company and provide a brilliant customer experience.
Here is to the last 2 year partnership with many more years to follow. Thank you Sugar Rush for your partnership and helping to modernise and optimise our app platform.
Reviews verified by DesignRush and sourced from the agency's profile
View All Reviews
Significa is an award-winning digital product design and development agency based in Porto, building beautifully functional digital products for clients across the globe...
Top Services:
Design Services
Software Development
eCommerce Development
UI/UX Design
Product Design
Show more
Location
Porto, Portugal
Number of Employees
Under 49
Average Hourly Rate
$75/hr
Minimal Budget
$50,000 & Up
Portfolios Count
5 Projects Listed
Significa Services
Design Services
Software Development
eCommerce Development
UI/UX Design
Product Design
Web Design
Web Development
Mobile App Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Appstem Designs and Develops Custom Software To Help Our Clients Solve Complex Business Problems.
Appstem is a full-service mobile strategy, design and development agency, Based in San Francisco, Appstem has delivered over 200 apps with a team of experts specializing in strategy, QA, development and UI/UX design...
Top Services:
Web Design
eCommerce Development
IoT
Mobile App Development
Software Development
Show more
Location
San Francisco, California
Number of Employees
50 - 99
Average Hourly Rate
$150/hr
Minimal Budget
$50,000 & Up
Portfolios Count
5 Projects Listed
Appstem Services
Web Design
eCommerce Development
IoT
Mobile App Development
Software Development
DevOps Consulting
Cloud Consulting
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Tesla
Johnson & Johnson
Zendesk
Kaiser
Monster
Byton
Geisinger
Cambia
Data sourced from the agency's DesignRush profile
Appstem Reviews & Testimonials
Nate Sroor
Review from Google
5.0★
Nate Sroor's Review Sourced from Google
From my initial consultation to the completion of the development process, the entire team at AppStem has been a pleasure to work with. With so many Mobile App Development companies to choose from, it's important to chose one who is willing to understand your needs and clearly outline a game plan before getting into development. If you're looking for more of a partner than just an agency, you're in good hands with AppStem.
Zachary Zimmerman
Review from Google
5.0★
Zachary Zimmerman's Review Sourced from Google
Not sure I would have been able to find a better development team. My app was built to spec and is running great! I would highly recommend them
Ryan Ricketts
Review from Google
5.0★
Ryan Ricketts's Review Sourced from Google
AppStem was able to answer all my questions in regards to designing a mobile app. They brought original ideas and professional aspect to their project for us. My team was extremely happy with the final results. I know I will be going back to them for my mobile app development needs.
Reviews verified by DesignRush and sourced from the agency's profile
View All Reviews
Enterprises with AI, Data & Digital Engineering
GEGNAT is a global technology consulting and software engineering company specializing in Artificial Intelligence, Data Engineering, Master Data Management (MDM), Cloud Platforms, and Enterprise Digital Transformation...
Top Services:
Web Development
eCommerce Development
SEO
AI Development
Mobile App Development
Show more
Location
Albuquerque, New Mexico
Number of Employees
100 - 249
Average Hourly Rate
$100/hr
Minimal Budget
$50,000 & Up
Gegnat Yards Services
Web Development
eCommerce Development
SEO
AI Development
Mobile App Development
Software Testing
Software Development
Staff Augmentation
IT Services
DevOps Consulting
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
We are a mobile application studio, built around a core team of seasoned marketers, serial entrepreneurs, veteran strategists and big idea lovers. We work with a diverse array of brands, companies, organizations and individuals to turn great ideas into powerful apps...
Top Services:
Web Design
Web Development
UI/UX Design
Mobile App Development
AI Development
Show more
Location
Irvine, California
Number of Employees
Under 49
Average Hourly Rate
$215/hr
Minimal Budget
$50,000 & Up
MEDL Mobile Services
Web Design
Web Development
UI/UX Design
Mobile App Development
AI Development
Wearables
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Taco Bell
Disney
Medtronic
Emirates
Kaiser Permanente
Body Surface Translations
Dreamscape
Xuro
Jawku
Hyundai
Data sourced from the agency's DesignRush profile
MEDL Mobile Reviews & Testimonials
Jonathan Ortiz
Review from Google
5.0★
Jonathan Ortiz's Review Sourced from Google
The team at MEDL did a beautiful job with the new Feeding Westchester website. It is truly a work of art. Their team was able to translate our needs into an incredibly useful website that supports our mission.
Reviews verified by DesignRush and sourced from the agency's profile
View All Reviews
AndAgain has an Integrating strategic insights, creative ingenuity, and cutting-edge technology, we specialize in the development of digital products, websites, apps, and campaigns that not only enhance our clients' online presence but also elevate the image of our agency partners...
Top Services:
Creative Services
UI/UX Design
Product Design
Web Design
Web Development
Show more
Location
London, United Kingdom
Number of Employees
Under 49
Average Hourly Rate
$150/hr
Minimal Budget
$50,000 & Up
AndAgain Services
Creative Services
UI/UX Design
Product Design
Web Design
Web Development
Mobile App Development
eCommerce Development
Branding
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.