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
4 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.
VerifiedVerified by the DesignRush team for authenticity and credibility.
Build Intelligent Apps for Web, Mobile, Data, AI and Cloud
Azumo has been building intelligent apps since 2016, offering expertise in custom native and cross-platform app development. It boasts a 150% client retention rate and a client portfolio of 100+ businesses, including Meta, Omnicon Media Group, and United Healthcare...
Top Services:
AI Development
Software Development
Staff Augmentation
Mobile App Development
Big Data Analytics
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Location
San Francisco, California
Number of Employees
100 - 249
Average Hourly Rate
$55/hr
Minimal Budget
$50,000 & Up
Portfolios Count
9 Projects Listed
Great uptime maintenance
“As our customer base and suite of live AI applications has expanded, Azumo has helped us achieve critical time to market speed, while maintaining critical uptime.”
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Discovery Channel
Meta
Zynga
Jostens
Assembled Brands
NGL
NCSoft
Twitter
Horoscope.com
Bento
Data sourced from the agency's DesignRush profile
Azumo Reviews & Testimonials
Michael S.
Director at Software Development Company
5.0★
Software Development Review from Michael S.
We selected Azumo to develop our software. We transitioned from another development company, so Azumo was initially responsible for migrating our existing code and environments. We are currently still working with Azumo as our nearshore software development team on adding new items to our software.
Anonymous
CTO at Healthcare Company
5.0★
UI/UX Design Review from Anonymous
Azumo helped us migrate our existing UIs into a new framework, creating reusable components and the infrastructure needed for future development. The developer they assigned became a seamless part of our team, always punctual, responsive, and a great fit overall.
Anonymous
VP Product & Engineering at Sales & Mktg Software Company
5.0★
Software Development Review from Anonymous
Thanks to Azumo’s work, our product is now more scalable, optimized, and ready for a growing user base. Their team has managed the engagement effectively, keeping us updated and addressing any challenges along the way. We’ve appreciated their constant availability and proactive communication.
Reviews verified by DesignRush and sourced from the agency's profile
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Pastilla is a full-service agency based in Los Angeles. We partner with public agencies, nonprofits, and global brands to turn complex missions into clear brand and digital experiences that build trust and move communities to action...
Top Services:
Branding
Design Services
Graphic Design
Web Design
Web Development
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Location
Los Angeles, California
Number of Employees
Under 49
Average Hourly Rate
$185/hr
Minimal Budget
$50,000 & Up
Portfolios Count
18 Projects Listed
Pastilla Services
Branding
Design Services
Graphic Design
Web Design
Web Development
Mobile App Development
Digital Marketing
Social Media Marketing
Content Marketing
Video Production
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
The Tactile Group is a full-service digital agency specializing in innovative technology solutions for local, state and federal governments, enterprise and non-profit clients. With a focus on human-centered design, we create captivating digital experiences that work seamlessly across all devices, while...
Top Services:
Web Design
Web Development
Mobile App Development
IT Services
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Location
Philadelphia, Pennsylvania
Number of Employees
Under 49
Average Hourly Rate
$199/hr
Minimal Budget
$50,000 & Up
The Tactile Group Services
Web Design
Web Development
Mobile App Development
IT Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
InVision Communications is a full-service engagement solutions agency that drives action through strategic and creative experiential, design, digital, and communication campaigns. By focusing on what truly matters, they deliver impactful stories that capture limited audience attention effectively...
Top Services:
Digital Services
Content Marketing
UI/UX Design
Graphic Design
Web Development
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Location
Walnut Creek, California
Number of Employees
100 - 249
Minimal Budget
$50,000 & Up
InVision Communications Services
Digital Services
Content Marketing
UI/UX Design
Graphic Design
Web Development
Mobile App Development
VR/AR
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Catepillar
Simens
Atlassian
Data sourced from the agency's DesignRush profile
InVision Communications Reviews & Testimonials
Lew
Review from Google
5.0★
Lew's Review Sourced from Google
The people at InVision Communications are some of the nicest people I’ve met. Everyone works hard and they welcome everyone in as family.
Reviews verified by DesignRush and sourced from the agency's profile
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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.