We’ve researched and ranked the best California HTML5 mobile app development agencies that build sophisticated and high-quality apps that help brands drive more loyal customers and sales. Compare listings by past work, reviews, cost and size to pick the best fit for you.

United States × California × HTML5 Mobile App Development × HR × $25,000 - $50,000 × Clear Filters
  • Decades of Experience, Building Platforms for the Worlds Top Brands - USA & Canada

    A leading mobile app development company with 18+ years of experience, Essential Designs offers expertise in planning, wireframing, design, code, testing, and deployment. Led by a team of 32+ senior developers, it has driven measurable growth for clients like Honeywell, AWS, and Shopify...

    Top Services:

    • Software Development
    • Mobile App Development
    • UI/UX Design
    • Web Development
    • IT Services
    • Show more
    Location
    Los Angeles, California
    Number of Employees
    50 - 99
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    21 Projects Listed

    Essential Designs Services

    • Software Development
    • Mobile App Development
    • UI/UX Design
    • Web Development
    • IT Services
    • Web Design
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Teck
    • Honeywell
    • BMW
    • Lifeguard
    • Government of Canada
    Data sourced from the agency's DesignRush profile

    Essential Designs Reviews & Testimonials

    • Chris Bailey
      Chris Bailey Director at BAILEY SERVICES LTD
      5.0

      Web Development Review from Chris Bailey

      I engaged their web-development team to rebuild and modernize our company's manufacturing website, and the experience has been exceptional. From the outset, communication was clear and responsive: they took time to understand our industry-specific compliance needs and translated them into a site structure that is clean, secure, and easy to navigate. Delivery was on schedule, and the final result exceeded expectations pages load quickly, the design feels professional and trustworthy, and the content layout supports clarity for both clients and regulators. In addition, the team proactively suggested helpful enhancements: mobile optimization, streamlined navigation, and improved documentation pages all of which have already resulted in noticeably increased user engagement and lower bounce rates. They handled feedback promptly and implemented corrections without fuss, making the collaboration smooth and efficient. Overall, this project added significant value to our online presence, giving us a polished, modern website that accurately reflects our manufacturing standards and commitment to quality. I would gladly work with them again and recommend their services to anyone seeking reliable web development for regulated-industry clients.

    • Kendall MacNabb
      Kendall MacNabb Director of Operations at Sea to Sky Rental
      5.0

      Web Development Review from Kendall MacNabb

      We needed to have a custom guest communication platform built, due to our custom workflows at the business, connecting our team members with text, images, buildings and daily project tasks. Essential Designs was able to hit the exact deadline we had, to the day, and completed on budget. We continue to add on features, it's a good relationship.

    • Emilie H
      Emilie H Technical Product Manager at Foundry Brands | Digital Strategy | Agile and Development Leadership | Helping Brands Reach The Next Level at Foundry brands
      5.0

      Mobile App Development Review from Emilie H

      The Essential Designs team's proactive approach to acknowledging their strengths and weaknesses not only enhances their performance but also fosters a culture of continuous improvement. Their fearlessness in tackling challenges is matched by their ability to successfully fulfill even the most demanding requirements. Beyond mere competence, the team's innovative spirit and enduring passion make them valuable and committed long-term collaborators. Their dedication to excellence sets them apart, ensuring a dynamic and mutually beneficial partnership.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Flyaps

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

    AI & Cloud Software Engineering

    Flyaps is an AI & cloud engineering company headquartered in New York, with delivery teams in Ukraine and Poland. For 12+ years, we've helped early-stage startups scale into unicorns and modernized legacy businesses into IT leaders...

    Top Services:

    • Software Development
    • AI Development
    • IT Services
    • DevOps Consulting
    • Cloud Consulting
    • Show more
    Location
    San Diego, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $49/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    9 Projects Listed

    Flyaps Services

    • Software Development
    • AI Development
    • IT Services
    • DevOps Consulting
    • Cloud Consulting
    • Web Development
    • Staff Augmentation
    • Web Design
    • Business Consulting
    • IoT
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • NetSpark IP & Telecom
    • MyersBiz Net
    • Yaana
    • Airbyte
    • Nextgen Clearing
    • JOIN
    • Relocate
    • Shoelace Wireless
    Data sourced from the agency's DesignRush profile

    Flyaps Reviews & Testimonials

    • Andrew Stetsenko
      Andrew Stetsenko Founder at GlossaryTech, backed by Dice
      5.0

      Python Django Review from Andrew Stetsenko

      We partnered with Flyaps to build the GlossaryTech Chrome Extension from scratch, including the backend for tech terminology analysis. The goal was to help recruiters, sales professionals, and other non-technical specialists in IT quickly understand the technical terms they encounter every day. The first release shipped back in 2017, long before today's AI tools were available off the shelf. Flyaps built a custom tokenization layer on top of NLTK library to resolve the ambiguity problem - distinguishing "Go" the language from "go to the shop," or "Swift" the framework from the adjective, while also correctly recognizing multi-token terms like "Ruby on Rails" or "Amazon Web Services". It was a pragmatic, precise solution that made the extension genuinely usable from day one. The outcomes have validated that early bet. GlossaryTech now holds "Featured" status in the Chrome Web Store, has passed 25,000 downloads, and consistently serves 10,000+ weekly active users and 2,000+ daily active users. For a niche professional tool, that level of organic, sustained engagement is rare - and it traces directly back to the technical foundation Flyaps put in place. Beyond the engineering, what stood out was how Flyaps engaged with the product itself. They contributed to architecture decisions, flagged edge cases early, and treated scope conversations with honesty rather than upsell. Communication was straightforward throughout, deadlines were met, and the codebase has held up well as we've extended the product over time. I'd recommend Flyaps to anyone looking for a partner who combines solid engineering with genuine product thinking. They've been central to GlossaryTech's success and continue to be a team we trust.

    • Dariia Ryzhova
      Dariia Ryzhova Product Manager at Nextgen
      4.7

      Software Development Review from Dariia Ryzhova

      Our collaboration with Flyaps has lasted for several major projects, of which I personally worked with them on two. I am very satisfied with the level of expertise (both technical and domain), the involvement and responsibility of the teams, and the quality of delivery. We successfully brought 2 major products to life together. Flyaps teams have diverse specializations, so I had the opportunity to attract consultants from different fields: software developers, including high-level architects, DevOps, QA, and business analysts. The teams have a modern technology stack and are experienced in Agile development. This allowed for smooth integration with internal teams and processes. It is also important to note that Flyaps provides technical consulting on demand, and this was very valuable service as well. Overall, I can recommend working with Flyaps as a reliable and high-quality partner.

    • ТОВ ХОТНАЙТС
      ТОВ ХОТНАЙТС Review from Google
      5.0

      ТОВ ХОТНАЙТС's Review Sourced from Google

      Flyaps delivered outstanding results for our e-commerce store! They built a visually stunning and high-performing website that perfectly captures our brand. Since launching, our site speed has improved by over 60%, and we've seen a noticeable increase in our conversion rate. Their team's technical expertise is top-notch, and the new admin panel they created has made managing our operations so much easier. I am happy to recommend this team of professionals.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • End-to-end digital product design and engineering.

    End-to-end digital product design and engineering for enterprises and premium brands...

    Top Services:

    • Branding
    • Mobile App Development
    • Software Development
    • AI Development
    • Design Services
    • Show more
    Location
    Los Angeles, California
    Number of Employees
    Under 49
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    4 Projects Listed

    L+R Services

    • Branding
    • Mobile App Development
    • Software Development
    • AI Development
    • Design Services
    • UI/UX Design
    • Wearables
    • Web Development
    • Product Design
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Meta
    • The Estée Lauder Companies
    • OceanX
    • Hilton Worldwide
    • UNICEF
    • ATP Tour
    • Louis Vuitton
    • Amazon
    • GE
    • Footlocker
    Data sourced from the agency's DesignRush profile
  • Our Model Is Much Different And Way Better Than the Usual Offshoring Nonsense.

    Our Yourshore model is intentionally designed to give you the very best remote engineering solution that solves for all the usual pain points that plague traditional offshore vendors...

    Top Services:

    • Software Development
    • HR Outsourcing
    Location
    Menlo Park, California
    Number of Employees
    250 - 499
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $25,000 - $50,000

    TurnKey labs Services

    • Software Development
    • HR Outsourcing
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Headspace
    • R1
    • ResNet
    • Diib
    • Salad
    Data sourced from the agency's DesignRush profile

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