Our expert analysts researched and ranked the top California responsive website design companies that build professional mobile responsive websites that rank higher on search engines. You can use our filter to personalize your search and select the best partner based on rates, reviews, size and location.

Best Responsive Web Design Agency In California

6 Companies - Rankings updated: September 05, 2026

DesignRush assesses agencies using expertise standards and verified client experiences to help you make better decisions. Certain agencies have paid placements.

Responsive
eCommerce
$50,000 & Up
Sort by: Sponsored
United States × California × Responsive Website Design × eCommerce × $50,000 & Up × Clear Filters

  • Tepia

    Invested in Your Success

    Tepia is a software company founded in 2012 with over 30 years of experience in web and mobile app development. We are a passionate and agile team of developers, designers, and strategists who are consistently pushing the boundaries of technology...

    Top Services:

    • Mobile App Development
    • eCommerce Development
    • Software Testing
    • Software Development
    • UI/UX Design
    • Show more
    Location
    Costa Mesa, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $100/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    2 Projects Listed

    Tepia Services

    • Mobile App Development
    • eCommerce Development
    • Software Testing
    • Software Development
    • UI/UX Design
    • Web Design
    • Web Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Marugame Udon
    • MicroVention
    • Henry Schein
    • Meta
    • Irvine Company
    • Participant Media
    • Pujol's Foundation
    • MoodMe
    • RELI Solutions Inc.
    • SleepCenter of Nevada
    Data sourced from the agency's DesignRush profile

    Tepia Reviews & Testimonials

    • Dr. Lesley Kirkpatrick, MD
      Dr. Lesley Kirkpatrick, MD Founder at mindcomb
      5.0 ★

      Mobile App Development Review from Dr. Lesley Kirkpatrick, MD

      I had a great experience working with Tepia. Abraham, the Founder and CEO, was available, helpful, and actively involved throughout every stage of the process. Kimmy, my assigned project manager, was organized, responsive, and clear in her communication from start to finish. They anticipated potential obstacles before they became issues and approached everything with a thoughtful, solutions-oriented mindset. The team was consistently proactive, professional, and transparent. I truly appreciated their structure and ability to keep things moving smoothly. I would highly recommend working with Tepia.

    • Robert Beknazarian
      Robert Beknazarian President at RELI - Windows & Doors
      5.0 ★

      Mobile App Development Review from Robert Beknazarian

      Working with Tepia Co has been an exceptional experience from start to finish. They played a critical role in developing our mobile app for RELI, and I can confidently say they exceeded our expectations on every level From day one, Tepia demonstrated a deep understanding of both the technical and business sides of app development. They didnt just execute tasks they asked the right questions, challenged assumptions when needed, and helped us think through complex workflows in a way that improved the final product. Their team truly operates as a strategic partner, not just a development vendor The communication was excellent throughout the entire process. We always knew where things stood, timelines were clear, and any issues or changes were handled proactively and transparently. For a project as complex as ours involving pricing logic, user flows, financing options, compliance considerations, and scalability this level of clarity and responsiveness made a huge difference. What really stood out was Tepias attention to detail and commitment to quality. The app they helped build is stable, clean, intuitive, and built with long-term growth in mind. They were thoughtful about architecture, performance, and future enhancements, which is critical for a company like ours that plans to scale aggressively. They were also extremely flexible and patient as our requirements evolved (which happens in real-world startups). Instead of pushing back, they collaborated with us to find smart, efficient solutions that aligned with our vision and budget. If youre a founder or business owner looking for a team that: Truly understands mobile app development Communicates clearly and consistently Thinks strategically, not just technically Delivers high-quality, scalable work I highly recommend Tepia Co without hesitation. They have been a trusted partner in bringing RELI to life, and we look forward to continuing to work with them as we grow

    • Ara Agopian
      Ara Agopian CEO at Solar Insure
      5.0 ★

      Mobile App Development Review from Ara Agopian

      I had a great experience with Tepia on our mobile app development. The project was managed very well and finished on time. Thank you Tepia!

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
    Visit Website View Profile
    4.6 4.6 (3)
    4.8 4.8 (26)

  • Kingsmen Digital Ventures

    We Build Innovative Technology.

    Applications and platforms proudly built here in the USA. We have assisted some of the most prominent global brands operating in complex and heavily regulated sectors in successfully launching software solutions that underpin their go-to-market strategy, ensuring a world-class customer experience...

    Top Services:

    • Software Development
    • Mobile App Development
    • UI/UX Design
    • Product Design
    • Creative Services
    • Show more
    Location
    Irvine, California
    Number of Employees
    Under 49
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    14 Projects Listed

    Kingsmen Digital Ventures Services

    • Software Development
    • Mobile App Development
    • UI/UX Design
    • Product Design
    • Creative Services
    • Web Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Evolus
    • Revance
    • Merz Aesthetics
    • PTC
    • Kareo
    • Microsoft
    • Quiksilver
    • Casamigos Tequila
    • VantagePoint
    Data sourced from the agency's DesignRush profile
    Visit Website View Profile
    5.0 5.0 (3)

  • Utility

    Award-Winning Mobile Design & Development Agency with AI Expertise

    Utility is a premier digital product agency specializing in custom mobile apps, web platforms, and AI-powered solutions for forward-thinking startups and global brands including Airbnb, Coca-Cola, Samsung, the NBA, and Forbes...

    Top Services:

    • Mobile App Development
    • Software Development
    • AI Development
    • UI/UX Design
    • Digital Services
    • Show more
    Location
    Los Angeles, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $149/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    1 Project Listed

    Utility Services

    • Mobile App Development
    • Software Development
    • AI Development
    • UI/UX Design
    • Digital Services
    • Web Development
    • Digital Strategy
    • eCommerce Development
    • Web Design
    • WordPress Website Design
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Coca-Cola
    • Airbnb
    • Verizon
    • Samsung
    • NBA
    • Forbes
    • Bleacher Report
    Data sourced from the agency's DesignRush profile
    Visit Website View Profile
    4.6 4.6 (10)

  • Isadora Digital Agency

    Verified Verified by the DesignRush team for authenticity and credibility. Award Winner Recipient of a Best Design Award for outstanding work.

    Digital Evolution For Business

    Leading brands turn to us at pivotal moments of digital evolution. Our global creative team fuses story, technology, and design to make experiences that captivate and convert. Our web design agency helps enterprise brands and market leaders navigate digital, evolve profitably, and launch unforgettable...

    Top Services:

    • Product Design
    • UI/UX Design
    • Web Development
    • Web Design
    • Digital Marketing
    • Show more
    Location
    Manhattan Beach, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $165/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    2 Projects Listed

    Isadora Digital Agency Services

    • Product Design
    • UI/UX Design
    • Web Development
    • Web Design
    • Digital Marketing
    • Branding
    • eCommerce Development
    • PPC
    • WordPress Website Design
    • Digital Strategy
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • News Corp
    • Razor USA
    • The Honest Company
    • Gartner
    • Logitech
    • Texas State Technical College
    • Live Nation
    • Kelley Blue Book
    • TravelStore
    • Brookfield Residential
    Data sourced from the agency's DesignRush profile

    Isadora Digital Agency Reviews & Testimonials

    • Michele DiRocco
      Michele DiRocco Review from Google
      5.0 ★

      Michele DiRocco's Review Sourced from Google

      The team at Isadora Agency is phenomenal to work with. They listened to our needs, addressed any questions quickly yet thoroughly, and made great recommendations throughout each phase of the project. They are incredibly transparent, responsive, and organized, which kept all deliverables of the project on-time and within budget. We felt the success of our project was a top priority for the team at Isadora Agency, which was woven throughout every deliverable.

    • Aimee Brierly
      Aimee Brierly Review from Google
      5.0 ★

      Aimee Brierly's Review Sourced from Google

      I have worked with Isadora Digital Agency across multiple projects including a full website redesign to providing ongoing support to for various digital projects. In each capacity I have found the entire team to be responsive, collaborative, and professional. They come prepared with new ideas and are always willing to try to find ways to advance our digital needs. I highly recommend.

    • Roberto Aponte
      Roberto Aponte Review from Google
      5.0 ★

      Roberto Aponte's Review Sourced from Google

      I am thoroughly pleased with your companies ability to deliver an exceptional working relationship that has lead to an eloquently executed client experience. Isadora Digital Agency took a much-needed concierge approach to our relationship and helped us define our goals as well as align the expectations of the officers of our company. Our needs and vision were sophisticated but you helped us to achieve our vision through a multitude of legal and compliance challenges while still creating a warm and textured environment for our clients to engage with us. There have been multiple occasions the agency has gone exceptionally above and beyond to make this project a success – had we partnered with some of the other 9 design companies we were engaged with, I don’t feel confident that they would have provided the white glove service that we received from your firm. Let me summarize: Isadora delivers enterprise style service and results with the client engagement and human interaction of a boutique firm.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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    5.0 5.0 (17)

  • Pactx, Inc

    Fully Scalable Digital Growth Agency.

    Pactx is dedicated to partnering with you on your digital transformation journey and we pride ourselves in being the anti-agency. Your success is our success! Change is hard but your competitors are not sitting idly by waiting for you. To evolve we must continually improve, learn, and grow and PactX will help...

    Top Services:

    • SEO
    • Digital Marketing
    • eCommerce
    • CRO
    • Email Marketing
    • Show more
    Location
    San Clemente, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $200/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    3 Projects Listed

    Pactx, Inc Services

    • SEO
    • Digital Marketing
    • eCommerce
    • CRO
    • Email Marketing
    • Social Media Marketing
    • Web Development
    • WordPress Website Design
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Florence Marine X Europe
    • La Tourangelle, Inc.
    • Kiva Confections
    • Forcis
    • IPD Surf
    • Future Stitch
    Data sourced from the agency's DesignRush profile
    Visit Website View Profile

  • Design Sketchers

    Our Creative Portfolio Smarter Results Across the Web.

    Design Sketchers is a comprehensive digital marketing service provider, dedicated to transforming your vision of online presence into a remarkable reality. Our emphasis lies in cultivating robust customer engagement strategies, ensuring an impactful and immersive online experience for your audience...

    Top Services:

    • Web Development
    • Graphic Design
    • Logo Design
    • Digital Marketing
    • Content Marketing
    • Show more
    Location
    Modesto, California
    Number of Employees
    50 - 99
    Average Hourly Rate
    $1000/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    2 Projects Listed

    Design Sketchers Services

    • Web Development
    • Graphic Design
    • Logo Design
    • Digital Marketing
    • Content Marketing
    • eCommerce Development
    • Social Media Marketing
    • Web Design
    • Mobile App Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • iDeal IT TrendLLC
    • Your Logo Here
    • Q Cycle Works, LLC
    Data sourced from the agency's DesignRush profile

    Design Sketchers Reviews & Testimonials

    • Veronica
      Veronica Review from Google
      1.0 ★

      Veronica's Review Sourced from Google

      I agree with the other review. This company claims that they can build websites and that they are located in Modesto, California which is not true. I have been calling them for weeks and so far no response. When I told them that I wanted a refund, they quiclky put some items on the website. They are very dishonest

    • Aristides
      Aristides Review from Google
      1.0 ★

      Aristides's Review Sourced from Google

      Been waiting for my refund I’m happy to see that you don’t really care for clients. Anyone looking to work with you will disappointed and the quality of humans you are thanks for understanding. Thanks for replying to all my emails and text messages. I’ll make sure everybody knows.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
    Visit Website View Profile
    1.0 1.0 (2)

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