Our expert analysts ranked the top product design companies in California that create multiple product categories such as apps, digital platforms, physical products and more to help your brand stand out and engage new audiences. Filter by price, reviews, portfolios and more to select a partner that best fits 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.

United States × California × Insurance × Sort by: Organic Rankings ×Clear Filters
  • Your trusted AI software development partner

    Diffco is a San Francisco AI-first software engineering partner for growth-oriented teams. We embed senior engineers and product strategists who turn AI vision into shipped, revenue-driving products. Our team has spent the last 18 years building: SaaS platforms, web & mobile apps, and AI products...

    Top Services:

    • AI Development
    • Software Development
    • Staff Augmentation
    • Mobile App Development
    • Web Development
    • Show more
    Location
    San Jose, California
    Number of Employees
    50 - 99
    Average Hourly Rate
    $110/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    31 Projects Listed

    Diffco Services

    • AI Development
    • Software Development
    • Staff Augmentation
    • Mobile App Development
    • Web Development
    • eCommerce Development
    • IoT
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Mars
    • Food Rocket
    • FlashGrid
    • Nokia
    • Instreamatic
    • Quire
    • Legionfarm
    • Latoken
    • Genius One
    • Shift
    Data sourced from the agency's DesignRush profile

    Diffco Reviews & Testimonials

    • Ivan Pasichnyk
      Ivan Pasichnyk CEO at WeLabelData
      5.0★

      AI Development Review from Ivan Pasichnyk

      We brought Diffco in to deliver the AI and computer vision components for one of our clients, an image generation startup. Because the work sat inside our own client relationship, we needed a partner we could trust to operate at our standard without us managing them day to day - and that is exactly what we got. Diffco owned the technical approach, built the computer vision and AI layer, and delivered the full scope in three months, on schedule. The engineering quality was high, they raised the right questions early instead of late, and they handled the confidentiality the project required without us having to chase it. After delivery they stayed on to support the system, which mattered to us as much as the build itself. When you subcontract a technical project inside your own client relationship, the risk is that the partner makes you look bad. Diffco did the opposite. They've earned our trust and we'd work with them again.

    • Oleg Sotnikov
      Oleg Sotnikov CEO at AppMaster
      5.0★

      AI Development Review from Oleg Sotnikov

      Diffco built a complex, production-grade AI agentic system and backend for our client's fintech platform owning architecture, AI/ML components, and AI agents in a security- and compliance-sensitive environment. They delivered on time and within budget, communicated proactively, and operated like part of our own team, taking ownership and suggesting better solutions throughout. Deep AI/ML and senior backend expertise. We'd happily work with them again.

    • Julia Platova
      Julia Platova VP Strategic Partnerships at OVA Solutions
      5.0★

      Mobile App Development Review from Julia Platova

      We partnered with Diffco for a comprehensive software development project aimed at delivering a mobile application and backend system for our client. The goal was to create a seamless, secure, and scalable solution within a 4-month timeline and $50k-$200k budget.Diffcos team was highly professional from start to finish. They handled everything: UI/UX design, backend architecture, API integration, and deployment.After the launch, they continued to support us with maintenance and performance optimization.The application received positive feedback and has proven stable and scalable.Were highly satisfied with Diffcos expertise, commitment, and ability to deliver real results.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Your Trusted Partner in Software Development, Product Design and QA

    inVerita is a global software, AI, and data engineering company with 150+ engineers across Europe, the USA, and Latin America(Colombia). We build secure, scalable solutions for healthcare, fintech, logistics, retail, defense, and e-learning...

    Top Services:

    • Software Development
    • Big Data Analytics
    • AI Development
    • Product Design
    • Software Testing
    • Show more
    Location
    San Francisco, California
    Number of Employees
    100 - 249
    Portfolios Count
    16 Projects Listed

    inVerita Services

    • Software Development
    • Big Data Analytics
    • AI Development
    • Product Design
    • Software Testing
    • Web Development
    • Staff Augmentation
    • Cloud Consulting
    • IoT
    • IT Services
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • INTELLIBOARD
    • DOKTOR 24
    • PATRIOT
    • PERFORCE
    • METHODICS
    • MEDIASHOUT
    • KROGER GROUP
    • HILTI
    • DILLIGENT
    • WGSN
    Data sourced from the agency's DesignRush profile
  • Don't Settle for Average. Work With the Best!

    Smart IT offers core IT development services and forms dedicated software engineering teams for long-term projects. Our talent has a rich background in competitive programming and gives us an edge when it comes to thinking outside the box. We guarantee 5 hrs of timezone overlap, regardless of your location...

    Top Services:

    • Software Development
    • Mobile App Development
    • Product Design
    • AI Development
    • Show more
    Location
    San Francisco, California
    Number of Employees
    50 - 99
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    6 Projects Listed

    Smart IT Services

    • Software Development
    • Mobile App Development
    • Product Design
    • AI Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • MDBerry
    • Persona.ly
    • Zaman Broker
    • Finitera
    • MEDvidi
    • VTB Bank
    • Thinfactory
    • WowWee
    • Classictic
    • My Trusted Builder
    Data sourced from the agency's DesignRush profile

    Smart IT Reviews & Testimonials

    • Julia Guzman
      Julia Guzman CPO at MEDvidi Inc
      5.0★

      Healthcare Review from Julia Guzman

      Smart IT is definitely a team you can trust! We hired Smart IT to develop a hybrid software platform for customer relationships and electronic health record systems. Also, together we launched our mobile apps. The guys have many successful cases behind them in our field and great experience in launching Healthtech products. Their development team implemented all account management-related features for our platform. Now we have the ability to rapidly scale when we need to.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Top Healthcare Product, Technology, & Venture Design Firm

    Sidebench is the top healthcare technology design and software engineering firm in the US. We combine strategy, design, technical architecture at every point of our process. We are known for delivering extraordinary business results...

    Top Services:

    • Mobile App Development
    • Software Development
    • AI Development
    • Wearables
    • UI/UX Design
    • Show more
    Location
    Los Angeles, California
    Number of Employees
    Under 49
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    11 Projects Listed

    Sidebench Services

    • Mobile App Development
    • Software Development
    • AI Development
    • Wearables
    • UI/UX Design
    • Web Development
    • Product Design
    • CRM Consulting
    • Cybersecurity
    • Software Testing
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • American Heart Association
    • Children's Hospital Los Angeles (CHLA)
    • Hoag Hospital
    • Cortica
    • A16Z (Andreessen Horowitz)
    • Lightspeed Venture Partners
    • Microsoft
    • Rud Bull
    • HP
    • Sony
    Data sourced from the agency's DesignRush profile

    Sidebench Reviews & Testimonials

    • Abhit
      Abhit Undisclosed at Undisclosed
      4.5★

      Translation Services Review from Abhit

      They provide consulting services for a healthcare service provider. Sidebench contributed their expertise to a comprehensive mobile application to make sure it would pass Apple Store requirements. Thanks to Sidebench`s input, the application launched on the Apple Store after the first submission. Sidebench`s response times were quick, and they were willing to accommodate a unique working arrangement. The relationship that we had was probably unique; most companies would push to do the development themselves. We only needed Sidebench`s know-how, and they were willing to accommodate us.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Creating Long Lasting Value For Your Business

    Digital Solutions is a full-service UI | UX, Website Development, and Application Development Agency located in Irvine, California...

    Top Services:

    • Design Services
    • Web Design
    • Product Design
    • Web Development
    • WordPress Website Design
    • Show more
    Location
    Irvine, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $150/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    8 Projects Listed

    Digital Solutions Services

    • Design Services
    • Web Design
    • Product Design
    • Web Development
    • WordPress Website Design
    • eCommerce Development
    • UI/UX Design
    • Software Development
    • Branding
    • Video Production
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • SmartProp Trader
    • dot.LA Founders' Guide
    • FACT Global
    • WeCamped
    • Rello
    Data sourced from the agency's DesignRush profile
  • Product and Webflow design agency for startups & enterprises.

    Alien is your trusted partner for elevating your digital presence. From UI/UX design to branding and digital marketing, we empower incubators, startups, and SMEs to thrive in the digital landscape...

    Top Services:

    • Web Design
    • Product Design
    • UI/UX Design
    • Branding
    • Design Services
    • Show more
    Location
    Ontario, California
    Number of Employees
    Under 49
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    4 Projects Listed

    The Alien Services

    • Web Design
    • Product Design
    • UI/UX Design
    • Branding
    • Design Services
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • HDFC
    • Aditya Birla
    • TVS
    • CavinKare
    • IIFL
    • Synergy
    • Zifo
    • Stockal
    • Bizingo
    • Card91
    Data sourced from the agency's DesignRush profile

    The Alien Reviews & Testimonials

    • Kavin Dot
      Kavin Dot marketing specialist at Stockal
      5.0★

      Mobile App Development Review from Kavin Dot

      Working closely with The Alien on the redesign of Stockal- global investing platform has been a transformative journey. The collaboration focused on enhancing user experience (UX) through thoughtful UX/UI design, web design, and responsive design. The Alien's expertise has played a pivotal role in shaping Stockal's interface into a streamlined and user-friendly platform for investors from India and the Middle East looking to engage with US stocks.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Interactive presentations, brand, and product design

    Bridger is a product, brand, and interactive design studio. We build interactive sales presentations that live at a link and report back who read what. We also design software products so the interface is on brand and easy to use. One senior team, never a template...

    Top Services:

    • Product Design
    • UI/UX Design
    • Web Design
    • Branding
    • Creative Services
    • Show more
    Location
    San Diego, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $160/hr
    Minimal Budget
    $1,000 - $10,000

    Bridger Creative Services

    • Product Design
    • UI/UX Design
    • Web Design
    • Branding
    • Creative Services
    • Graphic Design
    • Web Development
    • Digital Strategy
    • Logo Design
    • Digital Services
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • IBM
    • Oracle
    • City
    • American Express
    • McKinsey & Company
    • Manulife
    • Atlassian
    • Sunrun
    • Seismic
    • Expedia
    Data sourced from the agency's DesignRush profile
  • Amplifying Human Potential

    We create global impact through high-quality digital solutions. Were purposefully shaping the digital future across a range of industries. Discover some of our specific industry services...

    Top Services:

    • AI Development
    • Product Design
    Location
    San Francisco, California
    Number of Employees
    1000 & Up

    Qubika Services

    • AI Development
    • Product Design
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • IDB
    • Google
    • Nest
    Data sourced from the agency's DesignRush profile
  • Your Partner For Innovation

    MTechZilla is a custom software development company helping growing companies and product teams across the US and EU to build software products or scale engineering capacity. Senior, pre-vetted developers fully aligned to your timezone. AWS Partner with 40+ products delivered...

    Top Services:

    • Software Development
    • Mobile App Development
    • Web Development
    • AI Development
    • Cloud Consulting
    • Show more
    Location
    San Jose, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $25,000 - $50,000

    MTechZilla Services

    • Software Development
    • Mobile App Development
    • Web Development
    • AI Development
    • Cloud Consulting
    • Software Testing
    • Web Design
    • Product Design
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • ReloShare
    • Sintio
    • Pinnacle Furnished Suites
    Data sourced from the agency's DesignRush profile

Why companies trust DesignRush

Every agency is independently vetted before it can be listed or ranked

1

Identity Check

We verify businesses and reviewer LinkedIn profiles for integrity.

Agencies vetted
126,355+
2

Portfolio Review

We review agency work, case studies, and results to confirm skill.

Applicants rejected
49%
3

Ongoing Audit

We monitor listings regularly; outdated agencies are removed.

Agencies verified
9

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