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.

Best iOS App Development Agency In California

9 Companies-Rankings updated: August 20, 2026

All agencies on DesignRush undergo evaluation based on professional expertise and verified client reviews. Please note that certain placements are paid partnerships.

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  • 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...

    Location
    San Francisco, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $55/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    9 Projects Listed

    Azumo Services

    • AI Development
    • Software Development
    • Staff Augmentation
    • Mobile App Development
    • Big Data Analytics
    • DevOps Consulting
    • Cloud Consulting
    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.
      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
      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
      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 View All Reviews
    Visit WebsiteView Profile
    4.8 4.8 (12)
    4.6 4.6 (20)

  • AppsNation

    Apps 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...

    Location
    Los Angeles, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $50/hr
    Minimal Budget
    Under $1,000
    Portfolios Count
    7 Projects Listed

    AppsNation Services

    • VR/AR
    • Mobile App Development
    • Wearables
    • Software Development
    • Social Media Marketing
    • Web Development
    • DevOps Consulting
    • Blockchain
    • Digital Marketing
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Deliverables
    • Gymnasium
    • Bonus Buddy
    • Unilever
    • Sun Life
    • Habib Oil Mills
    Data sourced from the agency's DesignRush profile

    AppsNation Reviews & Testimonials

    • Ibrahim Ali Owner at Ali Traders
      4.8★

      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!

    • Tyson Lewis
      Tyson Lewis Head Roofing Consultant at Lewis Roofing Solutions
      5.0★

      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
      Zain Khanzada Review from Google
      5.0★

      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 Reviews
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    4.4 4.4 (2)
    5.0 5.0 (3)

  • IXD Büro

    Design 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...

    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

    IXD Büro Services

    • Branding
    • Design Services
    • Web Design
    • UI/UX Design
    • Web Development
    • CRO
    • SEO
    • Market Research
    • Graphic Design
    • Digital Services
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Xaman
    • VIA Labs
    • Tap2
    • UNO Home Loans
    • Millers Ale House
    Data sourced from the agency's DesignRush profile

    IXD Büro Reviews & Testimonials

    • Ben Donahower
      Ben Donahower Owner at No Bounds Digital
      5.0★

      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 Reviews
    Visit WebsiteView Profile
    4.3 4.3 (1)

  • Pastilla

    For 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...

    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
    • City 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
    Data sourced from the agency's DesignRush profile
    Visit WebsiteView Profile
    5.0 5.0 (3)

  • TOPS Infosolutions Pvt Ltd.

    You Think It We Build It.

    A leading IT outsourcing & software development company offering AI-Powered web and mobile app development services...

    Location
    Fremont, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $18/hr
    Portfolios Count
    2 Projects Listed

    TOPS Infosolutions Pvt Ltd. Services

    • AI Development
    • Mobile App Development
    • Web Development
    • Software Development
    • IoT
    • DevOps Consulting
    • Managed Services
    • Cloud Consulting
    • Staff Augmentation
    • VR/AR
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Farmhand
    • Paradesmith
    • Fishy
    • Enjoy Holistic
    • DreamConsin
    Data sourced from the agency's DesignRush profile
    Visit WebsiteView Profile

  • Rysysth Technologies

    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...

    Location
    Sacramento, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $45/hr
    Minimal Budget
    $10,000 - $25,000

    Rysysth Technologies Services

    • AI Development
    • Blockchain
    • Software Development
    • Mobile App Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Software & IT Industry
    • Corporate Services Industry
    • eCommerce Industry
    Data sourced from the agency's DesignRush profile

    Rysysth Technologies Reviews & Testimonials

    • Ketul Patel
      Ketul Patel Review from Google
      5.0★

      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 Reviews
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    5.0 5.0 (1)

  • Pretty Great

    A 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...

    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

    Pretty Great Services

    • Branding
    • Creative Services
    • Product Design
    • Web Design
    • Video Production
    • Mobile App Development
    • Web Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Connect Ventures
    • Long Harbour
    • Nike
    Data sourced from the agency's DesignRush profile
    Visit WebsiteView Profile

  • Endertech

    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”...

    Location
    Torrance, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $150/hr
    Minimal Budget
    $1,000 - $10,000

    Endertech Services

    • Digital Services
    • Web Development
    • Web Design
    • eCommerce Development
    • Software Development
    • WordPress Website Design
    • Mobile App Development
    • Digital Strategy
    • Digital Marketing
    • eCommerce
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Doyle
    • Honeybee Health
    • Milk Jar Cookies
    • NEFCO
    • Score Sports
    • United Oil
    • Natural Curiosities
    • Pick My Solar
    • Alliance for Children's Rights
    • The Metiri Group
    Data sourced from the agency's DesignRush profile

    Endertech Reviews & Testimonials

    • Adi Cohen
      Adi Cohen Review from Google
      5.0★

      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
      amy nguyen Review from Google
      5.0★

      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
      Bill Corley Review from Google
      5.0★

      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 Reviews
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    4.6 4.6 (19)

  • Chipsy IT Services Pvt. Ltd.

    Transform 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...

    Location
    San Francisco, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $12/hr

    Chipsy IT Services Pvt. Ltd. Services

    • Mobile App Development
    • IT Services
    • Cloud Consulting
    • DevOps Consulting
    • Software Development
    • Managed Services
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Cycle Agarbathis
    • mConnect
    • FinReads
    • Bell O Seal Valves Private Limited
    • AlaMirap Nutrition
    Data sourced from the agency's DesignRush profile
    Visit WebsiteView Profile

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