Our expert analysts researched and ranked the leading California iPhone app development companies that build customer-centric applications that engage and convert users into paying customers. Use our practical tool to filter listings by budget, size and reviews and select the best partner for your business needs.
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.

Azumo
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
- Show more
- Location
- San Francisco, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $55/hr
- Minimal Budget
- $50,000 & Up
- Portfolios Count
- 9 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsAzumo Services
Data sourced from the agency's DesignRush profileDiscovery Channel Meta Zynga Jostens Assembled Brands NGL NCSoft Twitter Horoscope.com Bento
Azumo Reviews & Testimonials

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.

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.

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 View All ReviewsApps Solution For Every Nation.
APPSNATION is the USA's top leading mobile application development company providing multiple Mobile App development services in IOs, Android, IoT, AR/VR, Games app development, Cross-platform, Wearable, eCommerce and much more. Contact Us to boost your Company's potential for next-level excellence...
Top Services:
- VR/AR
- Mobile App Development
- Wearables
- Software Development
- Social Media Marketing
- Show more
- Location
- Los Angeles, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $50/hr
- Minimal Budget
- Under $1,000
- Portfolios Count
- 7 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsAppsNation Services
Data sourced from the agency's DesignRush profileDeliverables Gymnasium Bonus Buddy Unilever Sun Life Habib Oil Mills
AppsNation Reviews & Testimonials
Social Media Marketing Review from Ibrahim Ali
We at Ali Traders recently partnered with AppsNation to handle our social media marketing, and we couldnt be more satisfied with the results. Our pages were barely active before, with low engagement and no clear branding. Within just a few weeks, their team completely transformed our presence across Facebook, Instagram.What we loved most was their strategy it wasnt just about posting pictures or running ads. AppsNation understood our business model, audience, and tone. They created consistent branding, unique post designs, powerful captions, and even helped us set up monthly content calendars. Their targeted ad campaigns generated real inquiries, not just likes. We saw a 40% increase in leads within the first month alone!

Web Development Review from Tyson Lewis
AppsNation's SEO efforts resulted in improved search engine rankings and increased organic traffic. They also enhanced the client's domain authority and conversion rates. The team was transparent, responsive, and proactive. Their client-centric approach and technical expertise were also impressive.
Zain Khanzada's Review Sourced from Google
AppsNation did an amazing job creating my business website. From start to finish, they were clear, informative, and guided me through every step of the process. I shared my ideas and the overall vibe I wanted for the site, and their execution was seamless. They were incredibly responsive, always getting back to me within minutes to answer any questions I had. As someone who isn't tech-savvy, I really appreciated their patience and ability to help me with everything I needed to do on my end. I highly recommend AppsNation for any web design needs. I couldn't be more satisfied with the result!
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsDesign by people for people
IXD Büro is a cozy European atelier specializing in custom web design and exceptional UX/UI solutions. As a boutique studio, our small, dedicated team approaches each project like true craftsmen...
Top Services:
- Branding
- Design Services
- Web Design
- UI/UX Design
- Web Development
- Show more
- Location
- San Francisco, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $40/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 8 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsIXD Büro Services
Data sourced from the agency's DesignRush profileXaman VIA Labs Tap2 UNO Home Loans Millers Ale House
IXD Büro Reviews & Testimonials

Design Services Review from Ben Donahower
We've collaborated with Interactive Design on numerous projects and continue to be impressed by their strategic thinking, creativity, and technical expertise. The team is deeply invested in delivering apps that are not only beautiful but also scalable and user-centered. Interactive Design is a true partner in innovation: responsive, thoughtful, and always pushing to build better digital products.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsFor People. For Progress.
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
- Show more
- Location
- Los Angeles, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $185/hr
- Minimal Budget
- $50,000 & Up
- Portfolios Count
- 18 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsPastilla Services
Data sourced from the agency's DesignRush profileCity of LA Recreation & Parks Black Girls Code Sacramento Public Library Consumer Technology Association Clean Power Alliance Microsoft Metrolink Hollywood Foreign Press Associations (HFPA) Disney Lossan
You Think It We Build It.
A leading IT outsourcing & software development company offering AI-Powered web and mobile app development services...
Top Services:
- AI Development
- Mobile App Development
- Web Development
- Software Development
- IoT
- Show more
- Location
- Fremont, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $25/hr
- Portfolios Count
- 2 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsTOPS Infosolutions Pvt Ltd. Services
Data sourced from the agency's DesignRush profileFarmhand Paradesmith Fishy Enjoy Holistic DreamConsin
Innovative Digital Solutions For A Smarter Future
Rysysth Technologies is a full-service IT solutions provider specializing in web development, digital transformation, and enterprise solutions. We help businesses scale with modern technologies, user-friendly designs, and performance-driven strategies. From custom websites to cloud-based platforms, our team...
Top Services:
- AI Development
- Blockchain
- Software Development
- Mobile App Development
- Show more
- Location
- Sacramento, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $45/hr
- Minimal Budget
- $10,000 - $25,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsRysysth Technologies Services
Data sourced from the agency's DesignRush profileSoftware & IT Industry Corporate Services Industry eCommerce Industry
Rysysth Technologies Reviews & Testimonials
Ketul Patel's Review Sourced from Google
Blockchain development service company that provides organizations of any size and business domain with blockchain-powered distributed systems. Develop a new blockchain project from scratch or adjust existing solutions with the help of a reliable partners.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsA Growth Partner Built for Vcs and Their Portfolio
Pretty Great® is an integrated creative studio designed and run like a talent management company. We search the world for the best creative talent, and we connect them with brands...
Top Services:
- Branding
- Creative Services
- Product Design
- Web Design
- Video Production
- Show more
- Location
- Los Angeles, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $100/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 1 Project Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsPretty Great Services
Data sourced from the agency's DesignRush profileConnect Ventures Long Harbour Nike
Beautiful & Functional Digital Solutions That Deliver ROI
Endertech (endertech.com, 310.400.0800) is a full-service web and software development company near Los Angeles since the year 2000 providing custom design, e-commerce, software development, and online marketing support. “If you can dream it; We can build it”...
Top Services:
- Digital Services
- Web Development
- Web Design
- eCommerce Development
- Software Development
- Show more
- Location
- Torrance, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $150/hr
- Minimal Budget
- $1,000 - $10,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsEndertech Services
Data sourced from the agency's DesignRush profileDoyle Honeybee Health Milk Jar Cookies NEFCO Score Sports United Oil Natural Curiosities Pick My Solar Alliance for Children's Rights The Metiri Group
Endertech Reviews & Testimonials
Adi Cohen's Review Sourced from Google
Gabe and his team were very creative and professional in designing our website. they listened to what we want and created a website that met our goals.Pleasure to work with them
amy nguyen's Review Sourced from Google
We needed to create a project for our online pharmacy platform and found Endertech on the web. Gabe Richards and Cheyne Phillips were extremely professional, friendly, informative, and responsive to our needs and questions. Beyond their technical expertise and vast experience, this team is creative, solutions oriented, engaging and incredibly easy to work with. We highly recommend Endertech to anyone looking for website developments and IT solutions.
Bill Corley's Review Sourced from Google
I engaged Endertech to make my vision of a niche marketing website a reality. The team at Endertech were creative in finding solutions to accomodate my specific functionality and look and feel desires for site throughout the development stages and delivered a product beyond my initial expectations. I was "wowed" by the end result. I will be continuing to put my trust in this organization for more of their very capable consultation and services as the site launches and ramps.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsTransform Your Business with Our End-to-End IT Solutions.
Chipsy Information Technology Services Pvt Ltd. offers comprehensive IT solutions, including expert consulting, mobile app development (VitalBase is an ABDM-enabled hospital management information system), application development, school management systems, and DevOps services...
Top Services:
- Mobile App Development
- IT Services
- Cloud Consulting
- DevOps Consulting
- Software Development
- Show more
- Location
- San Francisco, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $12/hr
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsChipsy IT Services Pvt. Ltd. Services
Data sourced from the agency's DesignRush profileCycle Agarbathis mConnect FinReads Bell O Seal Valves Private Limited AlaMirap Nutrition
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