We’ve researched and ranked the best Mountain View 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.

Best HTML5 App Developers In location

6 Companies - Rankings updated: April 18, 2026

All agencies are evaluated on DesignRush for demonstrated expertise and authentic client reviews to support your decision. Certain placements are paid.

United States × California × Mountain View ×
  • Bringing awesome ideas to life

    Closeloop is a renowned custom software development company in California, offering innovative software solutions to its clientele to meet modern digital trends. We specialize in custom software development, cloud solutions, web & mobile app development, and Salesforce and NetSuite implementation.  [... see all Closeloop Technologies reviews ]
    Location
    Mountain View, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    31 Projects Listed

    Closeloop Technologies Services

    • Software Development
    • Web Design
    • Mobile App Development
    • AI Development
    • Wearables
    • Web Development
    • eCommerce Development
    • CRM Consulting
    • Cloud Consulting
    • ERP Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts

    Clients and Projects

    View Full Portfolio
    • SevenSeas
      App Development Project SevenSeas
    • FlipSnap
      App Development Project FlipSnap
    • UTR Sports - Web & App Development
      App Development Project UTR Sports - Web & App Development
    • The Relationship Expert
      Web Design Project The Relationship Expert
    • McCreadie PharmAcademic
      User Research Project for Health Care Company McCreadie PharmAcademic
    Comprehensive analysis done by DesignRush Agency Experts.
    • Pacefunding
    • Cordance
    • Premier Talent Partners
    • Omnidian
    • Datacube.ai
    • HomeRun Financing
    • BioStem Technologies
    • UTR Sports
    • AJNA
    • Block & Tam
    Data sourced from the agency's DesignRush profile

    Closeloop Technologies Reviews & Testimonials

    • Rick Tomsic
      Rick Tomsic Founder and Chief Executive Officer at Tradovate, LLC
      5.0

      Software Development Review from Rick Tomsic

      Global business segment growth is requiring technology to keep up with the increase. Our platform is designed to be scalable and able to be implemented across several nations. We collaborated with Closeloop Technologies to work with our staff in order to scale up the programme.An whole agile team is provided by Closeloop Technologies to participate in our programme. At first, we gave them the data in hopes that they would aid in our execution. They have combined Spring Boot, JavaScript, and AWS cloud technologies.The platform is a value stream and full-suite insurance lifecycle. It is an internal iterative software programme.Working with Closeloop Technologies is simple. They pick up new roles rapidly and possess agile team abilities that are industry standard. The staff not only fits right in, but they also contribute their knowledge and perspectives, making them a vital component of the programme.

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    • Henrique Dubugras
      Henrique Dubugras Founder and Co-CEO at Brex
      5.0

      Software Development Review from Henrique Dubugras

      Services that had been slow or unavailable for weeks had to be brought back up. We must bring back our vital business role. After learning about our issue, the Closeloop project manager assigned a senior database specialist to address it. Our main programmer had a direct conversation with the database specialist of Closeloop after they listened to our problem and asked some follow-up questions. Within less than two hours, the solution to our issue had been verified and implemented.

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    • Bill Rogers
      Bill Rogers Chairman and CEO at Truist
      5.0

      Software Development Review from Bill Rogers

      We occasionally utilize outsourced resources to increase our team's ability to satisfy the commercial demands of our clients. This time, my goal was to create and enhance the products we were providing to clients. Their engineers joined our own team to work on the project, creating MetaTrader-based software for our traders. They assisted us in creating and refining a suite of services that give our clients more functionality; up until that point, the solution had been erratic and unconventional. Their most recent endeavor was the development of an income trading module. We employed a scrum methodology with sprint deliverables and agile planning. Along with narrative points, we also used our in-house bug tracking application for project and task management. Everything was really accurate.

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    Reviews verified by DesignRush and sourced from the agency's profile
  • Mobile App Development Agency

    M TECHUB LLC Leading Mobile App Development & Staff Augmentation Company in the USA  [... see all M TECHUB LLC reviews ]
    Location
    Mountain View, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $45/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    20 Projects Listed

    M TECHUB LLC Services

    • Mobile App Development
    • Software Development
    • Web Design
    • eCommerce Development
    • Web Development
    • WordPress Website Design
    • UI/UX Design
    • Blockchain
    • Software Testing
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts

    Clients and Projects

    View Full Portfolio
    • Thunder VPN - Fast, Safe VPN | Mobile App Development | Android App | Ios App
      App Development Project Thunder VPN - Fast, Safe VPN | Mobile App Development | Android App | Ios App
    • JoyRide - Book Car and MC Taxi | Mobile App Development | Android App | Ios App
      App Development Project for Delivery & Takeaway Company JoyRide - Book Car and MC Taxi | Mobile App Development | Android App | Ios App
    • Polarsteps - Trip Planner | Mobile App Development | Android App | Ios App
      App Development Project for Travel Company Polarsteps - Trip Planner | Mobile App Development | Android App | Ios App
    • SadaPay: Money made simple | Mobile App Development | Android App | Ios App
      App Development Project for Finance Company SadaPay: Money made simple | Mobile App Development | Android App | Ios App
    • Skincare Scanner App | Mobile App Development | AI App Development
      App Development Project for Beauty Company Skincare Scanner App | Mobile App Development | AI App Development
    • Home Services app | Mobile App Development | Android App | Ios App
      App Development Project for Hospitality Company Home Services app | Mobile App Development | Android App | Ios App
    Comprehensive analysis done by DesignRush Agency Experts.
    • Victor
    • Alexandar
    • Oscar
    • Alex
    • Qleever
    • Erzat
    • Roxana
    • Amir
    • Abbas
    • Matt
    Data sourced from the agency's DesignRush profile

    M TECHUB LLC Reviews & Testimonials

    • Soo Kang
      Soo Kang Co founder at Coffee Meets Bagel Dating App
      5.0

      Mobile App Development Review from Soo Kang

      We partnered with M TECHUB LLc to develop the "Coffee Meets Bagel Dating App," and we are thoroughly impressed with the results. The scope of the project was extensive and well-executed, covering all critical aspects of the app's functionality, design, and user experience. Below is a summary of the key deliverables:App Development: We collaborated closely to build a feature-rich, intuitive dating app with both Android and iOS versions. The app includes personalised matching algorithms, profile creation, messaging functionality, user preferences, and location-based matching.User Interface & Experience: M TECHUB LLc delivered a sleek, user-friendly design, ensuring smooth navigation and a visually appealing interface tailored to meet the needs of the app's target audience.Backend Architecture: A robust backend was developed to handle user data, match suggestions, real-time messaging, and seamless integration with third-party services. The platform ensures high performance, scalability, and data security.Quality Assurance & Testing: Throughout the development process, extensive QA and testing were carried out to ensure the app functions flawlessly across all devices and platforms.Launch & Deployment: The app was successfully launched on both the Apple App Store and Google Play Store. The M TECHUB LLc team also assisted with post-launch support, addressing any minor issues promptly.Ongoing Support & Updates: Post-launch, we received continuous support to optimize performance and implement new features based on user feedback.We are extremely satisfied with the outcome of this project and the professionalism, expertise, and dedication displayed by M TECHUB LLc. They not only met our expectations but exceeded them, ensuring a successful app launch and continued support. I highly recommend their services for any app development project!

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    • Ash Co
      Ash Co Review from Google
      1.0

      Ash Co's Review Sourced from Google

      Terrible experience. Zero discipline and poor coordination. You have to ask again and again for even the simplest things And there are also many contradictions between what they initially say and what they actually do.They simply do what they want and later try to justify it by telling you that you are wrong. very unprofessional behaviour

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    • Oscar Vigil
      Oscar Vigil Review from Google
      5.0

      Oscar Vigil's Review Sourced from Google

      MTECHUB LLC stands out as a leading provider of top mobile app development services, delivering innovative and user-friendly solutions for businesses worldwide. Whether it's iOS, Android, or cross-platform apps, their expertise ensures seamless performance and cutting-edge designs. Trust MTECHUB LLC to transform your app ideas into successful digital products.

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    Reviews verified by DesignRush and sourced from the agency's profile
  • Marketing for Digital Natives

    Grazitti Interactive, a global leader in digital innovation, offering AI-driven solutions to drive customer success. We specialize in Salesforce, marketing automation, analytics, and more, partnering with industry giants to deliver results-oriented solutions for clients.  [... see all Grazitti Interactive reviews ]
    Location
    Mountain View, California
    Number of Employees
    1000 & Up
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    11 Projects Listed

    Grazitti Interactive Services

    • Graphic Design
    • Video Production
    • Web Design
    • Web Development
    • Digital Marketing
    • SEO
    • PPC
    • Social Media Marketing
    • Mobile App Development
    • Software Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts

    Clients and Projects

    View Full Portfolio
    • Building a Cross-Platform React Native Mobile App for a Home Utility Services Company
      App Development Project Building a Cross-Platform React Native Mobile App for a Home Utility Services Company
    • Redesigning Online Community to Increase Customer Engagement for a Leading Healthcare Company
      Web Design Project Redesigning Online Community to Increase Customer Engagement for a Leading Healthcare Company
    • Implementing Billing Analytics for a Digital Financial Media Company
      eCommerce Development Project Implementing Billing Analytics for a Digital Financial Media Company
    • Enhancing User Experience in Shopify by Enabling Multiple Customizations
      Shopify Project Enhancing User Experience in Shopify by Enabling Multiple Customizations
    • Customizing Survey Forms and Website Components in AEM 6.5 for a Global Organizational Consulting Firm
      Web Design Project Customizing Survey Forms and Website Components in AEM 6.5 for a Global Organizational Consulting Firm
    Comprehensive analysis done by DesignRush Agency Experts.
    • Awid
    • Biogen MA, Inc
    • Bulamu Healthcare International
    • Calypso
    • CBR Systems Inc (AMAG Pharmaceuticals)
    • Connexity UK Limited
    • Convert Digital
    • Devex
    • Didax Inc,
    • Evoke Group LLC
    Data sourced from the agency's DesignRush profile

    Grazitti Interactive Reviews & Testimonials

    • Rida Khan
      Rida Khan Owner at Undisclosed
      5.0

      Email Marketing Review from Rida Khan

      This is the second company I've worked with Grazitti at and both experiences have been positive. Their team is able to turn around our requests very quickly and has provided good best practices from their work with other clients. I'd recommend them for the Marketing services.

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    • Patricia Lughezzani
      Patricia Lughezzani Group Vice President of Customer Support & Advocacy at Marketo
      5.0

      Web Design Review from Patricia Lughezzani

      Grazitti and Marketo Support have successfully partnered to roll out rich functionality and support Portal. Beyond core development skills to implement business functionally in SFDC Service Cloud and Customer Community, the Grazitti team has been a valued contributor to recommend technology such as Solr text search, workflow optimizations, and web creative design.

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    • David Skyberg
      David Skyberg Product Manager at Ping Identity
      5.0

      Digital Marketing Review from David Skyberg

      Right from start the Grazitti team gave us the confidence that we do not need to have a plan B. Once things started rolling – they were able to accommodate a number of requirements that were made by the operating teams within the timeframe.

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    Reviews verified by DesignRush and sourced from the agency's profile
  • Your Ultimate Partner in Poker Game Evolution.

    Creatiosoft is a leading poker game development company specializing in creating immersive, innovative, and scalable poker solutions. Since 2012, weve delivered world-class gaming experiences powered by cutting-edge technology, including blockchain and AI integration. With a global client base spanning the  [... view Creatiosoft Solutions Private Limited profile ]
    Location
    Mountain View, California
    Number of Employees
    50 - 99
    Average Hourly Rate
    $20/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    1 Project Listed

    Creatiosoft Solutions Private Limited Services

    • Software Development
    • Mobile App Development
    • Web Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts

    Clients and Projects

    View Full Portfolio
    • Game Development
      Game App Development Project for Gambling Company Game Development
    Comprehensive analysis done by DesignRush Agency Experts.
    • Floyd Media
    • Vasco Games B.V.
    • Wisecalvin
    • DAFABET
    Data sourced from the agency's DesignRush profile
  • Engineering Intelligent & Scalable Solutions.

    VentureDive is an award-winning custom software development company dedicated to spearheading digital transformations for Fortune 500 companies across BFSI, CPG/retail, healthcare, transportation, logistics, and QSR industries through its expertise in the realms of Fintech, Data & AI, HealthTech, PropTech  [... view VentureDive profile ]
    Location
    Mountain View, California
    Number of Employees
    250 - 499
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $25,000 - $50,000

    VentureDive Services

    • AI Development
    • Software Testing
    • Software Development
    • Mobile App Development
    • Big Data Analytics
    • Cloud Consulting
    • DevOps Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Careem
    • Unilever
    • DNOW
    • Islamic Finder
    • Roland Berger
    • Kaizen
    • Google
    • McKinsey & Company
    • Droobi
    • Kashat
    Data sourced from the agency's DesignRush profile
  • You Think We Will Deliver

    TechMave Software LLP delivers innovative web, mobile, and AI solutions tailored to business needs. Our team combines creativity, technology, and strategy to build impactful digital products that empower brands globally.  [... view TechMave Software profile ]
    Location
    Mountain View, California
    Number of Employees
    50 - 99
    Average Hourly Rate
    $11/hr
    Minimal Budget
    $10,000 - $25,000

    TechMave Software Services

    • Design Services
    • eCommerce Development
    • Web Development
    • AI Development
    • Mobile App Development
    • Software Development
    • CRM Consulting
    • Staff Augmentation
    • Managed Services
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • GoDirect
    • Fixfind
    • Maxemo Capital
    • Vynkit
    • Master Tuning
    • UVIP
    • RGS Cleaning
    • Green Greek Solutions
    • Alhamra Insurance
    • Monstar Solar
    Data sourced from the agency's DesignRush profile

    TechMave Software Reviews & Testimonials

    • Oscar Singh
      Oscar Singh Review from Google
      5.0

      Oscar Singh's Review Sourced from Google

      Working with TechMave was a pleasure. Their team is skilled, professional, and always ready to help. Amazing results!

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    • noir s
      noir s Review from Google
      5.0

      noir s's Review Sourced from Google

      TechMave Software is amazing! Their support team is super helpful, and their strategies are top-notch. They truly understand client needs and deliver great results. Highly recommend!😊😊

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    • Brooke Simons
      Brooke Simons Review from Google
      5.0

      Brooke Simons's Review Sourced from Google

      Highly recommend working with TechMave for app development. The team is super responsive, friendly, and get the job done. Avi was our project lead, he is a pleasure to work with.

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    Reviews verified by DesignRush and sourced from the agency's profile

About The Author and Expert Reviewer

Selina Garcia has authored 500+ articles and edited 50+ published books in economics, law, and history. Her unique blend of experiences allows her to approach content creation from a well-rounded perspective. Currently, Selina applies her expertise to producing insightful articles on IT, software, and applications for DesignRush.

Former Development Director

Sergio is a technology leader with over six years of experience managing global teams and delivering projects across fintech, sportstech, and B2B platforms. At DesignRush, he drove product growth and development execution, building tools that speed up processes by 95% and cut costs by 35% while maintaining full uptime.