All App Designing Companies in California
AppVerticals
4.9(24 reviews)Developing Software That Writes Your Success Story
Highly recommendedAppVerticals is a growth-focused software development company that helps startups, scale-ups, and enterprises build products designed to create traction early and grow steadily. The focus is on MVPs, functional prototypes, and full-scale applications that meet investor benchmarks and stand out in competitive markets. Recognized by Inc. 5000 and Clutch as one of the top software development companies, AppVerticals partners with businesses across industries like real estate, logistics, healthcare, and edtech. Each solution is built to create traction early and scale as usage increases. Whether it’s an idea in its early stage or an existing product that needs structure, AppVerticals brings clarity to the entire development process. All projects follow HIPAA, GDPR, and ISO standards, with a strong focus on performance, security, and maintainability. Modern frameworks and lean delivery methods are used to simplify builds, avoid unnecessary complexity, and keep progress aligned with both user behavior and business goals.Looking for work in App DesigningLocated in Los Angeles, United States (+3)From €3,000 for App DesigningWorked in Beverage (+8)Speaks English201-500 membersPlavno
5(16 reviews)AI-First Software Company: Secure Agents, Voice Assistants, and Scalable Cloud.
Top awardedPlavno is a premier software development house with over 20 years of experience and a highly qualified team of experts in your industry. Fully-fledged teams of specialists cover each stage of product creation , from product management and analysis to design, development, testing, and ongoing support. We have a unique advantage , our pre-formed full teams work exclusively on products in their specific domains, such as Healthcare, E-Learning, FinTech, Travel & Hospitality, Fleet management and more. We can help you with: ✔ Web Development ✔ Mobile App Development ✔ CRM/CMS/SaaS Development ✔ Chat and Chatbot Development ✔ Web3 / DeFi / DAO / Smart contract ✔ WebRTC Stop struggling with bloated budgets and slow time-to-market. At Plavno, our fully-fledged team provides cost-effective and streamlined solutions that minimize technical debt and maximize your product's potential. With end-to-end support and a proven track record in the SAFe Scaled Agile Framework, we're the partner you need to succeed. LET’S CONNECT Let us help you choose the best path forward to deliver the perfect solution: Admin@plavno.io1 work in App DesigningLocated in Alexandria, United States (+2)From €10,000 for App DesigningWorked in Banking & Financials (+19)Speaks English, French(+2)51-200 membersTRIARE
4.9(11 reviews)TRIARE unlocks IT potential of YOUR business
TRIARE is a WEB and MOBILE software development company based in Europe. We are delighted to offer our services as your long-term partner, taking all technical matters off your shoulders and allowing you to focus on your business development. YOU WILL GET: ✔ In-house team . Work with a dedicated team that is 100% focused on your product and located in the same office. ✔ Efficiency & transparency , as our process is based on Scrum methodology and managed by certified Scrum Masters. ✔ Fast result. Working with us, you will get the first result in 1 week. ✔ High quality, as TRIARE has well-established processes of software development and experienced specialists. ✔ Full cycle development . Our company covers all stages of development, handling everything from Discovery and prototyping to Design, development, and maintenance. ✔ IP rights . From the very beginning, you are the only owner of the intellectual property of your project materials: source code, design, documentation, etc. ✔ Warranty period will be provided for your system for free. ASPECTS OF OUR MINDSET: - Focused on results. We are focused on the result of your business with an understanding of the real goals and KPIs that our team should achieve. - Solution Provider. It means that we always come to you with solutions, not with questions. We take all technical aspects of the project off your shoulders, allowing you to focus on the marketing and business strategies. - We go the extra mile. Being a proactive company, we always think and take a step ahead. TECHNOLOGIES WE USE: - Mobile app development: Kotlin, Java, Swift, Objective-C. - Cross-platform development: Flutter, React Native. - Web frameworks: Node.JS, React.JS, PHP, Ruby on Rails.1 work in App DesigningLocated in Fairfax, United States (+3)From €5,000 for App DesigningWorked in Beverage (+20)Speaks English, Ukrainian51-200 membersApptech Systems
5(6 reviews)Your Enterprise’s Next Chapter Starts Here!
Top awardedFounded in 2017, Apptech has emerged as a reliable ally for organizations on their journey towards digital transformation. We specialize in crafting a suite of digital solutions that strategically leverage the transformative power of technology. Our core expertise encompasses bespoke software, innovative web and mobile applications, and robust enterprise solutions that guide our clients toward a prosperous digital future. We are proud partners with industry giants Microsoft and Amazon, utilizing their cutting-edge technologies to deliver exceptional results. Moreover, our operations extend from our headquarters in Türkiye to the United States and Saudi Arabia. Each office is equipped to serve regional clients with tailored expertise, making us a global player in the digital solutions arena. End-to-End Software Development Web & Mobile App Development AI & Machine Learning SaaS Development PoC/MVP Development App Modernization IT Consulting Quality Assurance Services Our mission is to help enterprises accelerate the adoption of new technologies, untangle complex issues that always emerge during digital evolution, and orchestrate ongoing innovation. Whether it is a consumer-oriented app or a transformative enterprise-class solution, the company leads the process from ideation and concept to delivery and provides ongoing support through its quality framework.Looking for work in App DesigningLocated in Lodi, United States (+3)From €5,000 for App DesigningWorked in Household Products (+12)Speaks English, Arabic11-50 membersSynergy Labs
4.9(14 reviews)#1 Boutique App Development Agency
Highly recommendedTop awardedAt Synergy Labs, we believe that building a great app is more than just writing code—it’s about creating a digital experience that elevates your brand. Founded over six years ago, we’ve grown into a boutique development studio delivering over 50 custom projects for clients like Forbes Council , Minnect , and Clapper . Our journey started when our founder, Sardor, faced the same challenges as our clients: balancing quality with cost-effective development. That experience inspired us to create a smarter way to build apps—one that bridges the gap between the agility of freelancers and the bureaucracy of large firms. Our collaborative approach ensures you’re informed and in control at every step, with a dedicated team working as an extension of your business. What Sets Us Apart: Fixed Cost : One upfront price covers your project from start to finish—no surprises, just clarity and peace of mind. Dedicated Team : A single point of contact and a dedicated developer focus solely on your project, ensuring a seamless and personalized collaboration. Your Build, Your Ownership : Everything we create—from the code to the hosting—is entirely yours, offering long-term scalability and control. Our expertise spans custom mobile apps for iOS and Android , as well as web applications , all designed with your unique vision in mind. Whether you need a membership app like Forbes Council’s, an expert marketplace like Minnect’s, or a dynamic social platform like Clapper’s, we’re here to help you stand out. Let’s connect and explore how we can bring your vision to life or check us out at: www.synergylabs.co2 works in App DesigningLocated in Hartford, United States (+23)From €5,000 for App DesigningWorked in Hospitals & Healthcare (+4)Speaks English, Arabic11-50 membersDifferenz System
5(9 reviews)We make a difference.
At Differenz System we focus on providing a variety of web and app development solutions that have positively impacted our client's productivity and profitability. Our company is built on the foundation of three points: high performance, high productivity, and a healthy and energizing work environment. Our team is composed of experienced professionals who specialize in providing comprehensive business solutions for web development, mobile app development, custom application development, and software development, all with a service-oriented mindset. Throughout the years we have prioritized providing innovative solutions to our customers with care and diligence. Today, it is safe to say we are one of the best custom application and web development companies out there!Looking for work in App DesigningLocated in Los Angeles, United StatesFrom €1,000 for App DesigningWorked in Industrial Goods & Services (+2)Speaks English, Hindi51-200 membersIdea Usher
4.2(7 reviews)Ushering in Innovation
Highly recommendedIdea Usher is a premier tech solution provider, offering a full spectrum of next-generation digital solutions to startups, Fortune 500 companies, and enterprises worldwide. With offices across the USA, UK, Canada, and India, we are dedicated to transforming client visions into impactful digital realities. Our mission is clear: to harness the power of cutting-edge technology in AI, Blockchain, Web3, and Tokenization, driving growth and creating solutions that matter. With over 11 years of experience, we have successfully delivered more than 1000 projects across 50+ countries, empowering 500+ clients to thrive in today’s digital landscape. Our expertise spans custom app development, legacy system modernization, and innovative tech deployments tailored to each client's needs. Our team of 250+ seasoned professionals—including developers, engineers, designers, and digital strategists—is proficient in 35+ tools and languages, ensuring each project is built on a foundation of innovation, quality, and functionality. By integrating sleek design with advanced technology, we craft human-centered UI/UX experiences that stand out in the market. Customer satisfaction is at the heart of what we do, and we are dedicated to delivering excellence in every project. We’ve partnered with leading brands like BuzzTime, Gold’s Gym, Share My Ride, Payhoo, huBear, and Mediport, building a track record of trust and reliability.Looking for work in App DesigningLocated in Mountain View, United States (+1)From €1,000 for App DesigningWorked in Sports (+1)Speaks English, Hindi201-500 membersKonstant Infosolutions
5(1 review)Creative. Innovative. Functional.
Top awardedAt Konstant Infosolutions, we are not just software developers; we are your strategic partners in harnessing the power of emerging technologies. With over two decades of excellence in delivering cutting-edge software solutions, we are poised to drive your enterprise into the future. We blend our creativity and technical expertise to create exquisite, sharp, customer-centric, ideal mobile apps, websites, and online stores using AI, IoT, ML, and Cloud Computing. Our skilled team of tech leads and experts delivers cost-effective, customized software solutions. With clients spanning the USA, Europe, Middle East, and Asia, our mission is to democratize digital services worldwide. Driving Innovation beyond Boundaries: Innovation is at the heart of everything we do. We are not content with simply meeting industry standards; we continuously push the boundaries of what's possible in app development (web/mobile). Our commitment to research and development ensures that we stay at the forefront of technological advancements, enabling us to deliver solutions that are not only relevant today but also anticipate the needs of tomorrow. This dedication to innovation sets us apart as your trusted partner in achieving digital excellence. > Established in 2003 > Headquarters in Jaipur, Rajasthan, India Business Solutions & Services We Provide For over 22 years, Konstant Infosolutions has been delivering top-notch IT solutions globally. We're your experienced partner, helping you stay ahead of competitors and seize opportunities. Custom Solution Development (App & Web): > Crafting tailored software solutions that redefine digital experiences and drive business excellence. > Elevating your business with bespoke mobile apps and web platforms designed to meet unique requirements. Dedicated Development Team: > Our dedicated teams bring unwavering focus and expertise to your projects, ensuring seamless integration and innovation. > Assembling seasoned professionals dedicated to your success, fostering synergy with your in-house operations. Staff Augmentation (Onshore & Offshore): > Empowering your projects with the right talent at the right time, whether onshore or offshore, for adaptability and productivity. > Flexibility to meet evolving project needs, maintaining optimal productivity and course for success. Enterprise Content Management System: > Streamline content management. > Enhance customer engagement with robust ECM systems. Business Intelligence Systems: > Unlock data-driven insights. > Custom BI solutions for informed decision-making. Business Process Automation: > Streamline operations for efficiency. > Automation for supply chain, finance, procurement, and more. Project Management: > On-time, on-budget project success. > Cutting-edge tools and top talent for project excellence. Cloud Consulting: > Scalable and efficient cloud solutions. > Achieve reliability, mobility, and efficiency. Emerging Technologies as Services: > AI/ML (Artificial Intelligence/Machine Learning): Harness the power of AI and ML to unlock data-driven insights, automation, and predictive capabilities, driving smarter decision-making. > AR/VR (Augmented Reality/Virtual Reality): Explore immersive technologies for innovative applications and enhanced user experiences that set you apart in the market. > Blockchain: Leverage the potential of blockchain for secure, transparent, and decentralized solutions that redefine trust in digital transactions. > IoT (Internet of Things): Connect and control devices to gather valuable data, enabling smarter and more informed business strategies. > Wearables: Develop wearable technology solutions for industries such as fitness, healthcare, and beyond, enhancing user engagement and health outcomes.Looking for work in App DesigningLocated in Palo Alto, United States (+2)From €5,000 for App DesigningWorked in Entertainment & Events (+1)Speaks English51-200 members3techagency
4.9(13 reviews)Grow your business with automated digital marketing.
At 3techagency we’re a ROI-Driven digital marketing agency helping businesses scale up marketing efforts seamlessly through tools & services that grow revenue, improve efficiency & team versatility.1 work in App DesigningLocated in Los Angeles, United States (+1)From €100 for App DesigningWorked in Consumer Electronics (+4)Speaks English, Swahili11-50 membersRHILLANE Marketing Digital
4.9(124 reviews)Grow Big, Grow Right.
Highly recommendedTop awardedAt RHILLANE Marketing Digital, we don't just promote your brand: we reveal its full potential. As a 360° digital marketing agency, we have supported over 615 clients worldwide, generated +$50 million in revenue for our clients, and managed +$15 million in advertising budgets. With offices in both Morocco and California, USA, we are proud to serve an international clientele by providing customized and high-performing solutions. Results that speak for themselves. With 280 Meta Ads clients, +80% of our campaigns achieving a ROAS greater than 7, and a 96% satisfaction rate, we transform our clients' ambitions into measurable successes. Our services range from creating elegant and intuitive websites, to SEO that boosts your rankings, through ultra-targeted Meta, Google, and TikTok advertising campaigns. Each strategy is designed to capture attention, generate conversions, and build customer loyalty. RHILLANE Marketing Digital is more than a digital agency: we are your growth partner. Thanks to our cutting-edge tools, our bold creativity, and data-driven expertise, we help our clients overcome their competitors and reach new heights. Join the companies that have already transformed their online presence with us. Your success starts here.Looking for work in App DesigningLocated in Torrance, United States (+2)From €1,000 for App DesigningWorked in Travel & Leisure (+18)Speaks English, Arabic(+1)51-200 membersBluelight
(0 review)👨💻 Bluelight is a leading custom software development company with a team of top-quality software developers from 6 different countries spanning the US, Canada, and LATAM, enabling companies to achieve their roadmaps with speed and precision. 🛠️ We offer a wide range of services, including Software Development Services, Staff Augmentation, Development Teams, SOC 2 Compliance, DevOps and Cloud Services, Custom AI Solutions, and much more. 🤖 We have expertise in various technologies such as React, Node.js, Python, .NET, Java, Ruby, PHP, Golang, and Angular. 📲 Bluelight also provides solutions in QA Testing & Automation, Business Intelligence, Data Science, iOS and Android App Development, and UX/UI Design. 🚀 Our mission is to be a reliable partner empowering businesses with cutting-edge software, technology, and infrastructure solutions that deliver value and drive societal transformation.Looking for work in App DesigningLocated in Sacramento, United StatesFrom €10,000 for App DesigningWorked in Logistics & Supply ChainSpeaks English201-500 membersANML
5(1 review)We Create Result Driven Apps, Websites, and Brands for early stage startups to global enterprises.
Founded in 2012, ANML (Animal) is a strategic design and technology partner helping ambitious brands shape how they are experienced in a digital-first world. We don’t just build websites or products. We design full brand ecosystems that strengthen perception, deepen trust, and drive measurable growth. We believe digital experiences are no longer support channels—they are primary brand touchpoints. Your website, product interface, and connected platforms define how your audience evaluates credibility, quality, and leadership. Every interaction shapes loyalty. We approach each engagement by mapping the entire brand journey, ensuring strategy, storytelling, design, and technology work together as one cohesive system. From early-stage companies to global enterprises, we partner closely with leadership teams to unlock opportunity and create clarity. Our senior-led studio delivers brand strategy, web and app design, product interface design, branding, and full-stack development with precision and purpose. We operate as an extension of your team—aligning on business objectives, elevating user experience, and building scalable foundations for long-term success. Selected Clients Ford, CNN, Whirlpool, KitchenAid, ServiceNow, GT’s Kombucha, NetApp, SurveyMonkey, Logitech, 805 Beer, Palo Alto Networks, Marvell, Bandai Namco, Brunswick, Zoom, Sitecore, Citrix, Autodesk Selected Results ServiceNow: 50% increase in demo sign-ups NetApp: 3x engagement, 2x sign-ups Flock Safety: 2x conversions within five months Yummly: 50M users, 4.8-star rating ANML builds brands people trust—and digital experiences that make that trust tangible.1 work in App DesigningLocated in San Jose, United StatesFrom €1,000 for App DesigningWorked in Software & Computer Services (+7)Speaks English, Italian11-50 membersAkveo
5(1 review)Here to Build
Akveo is an international software development firm that creates innovative digital solutions to help businesses grow. Specializing in custom software, low-code/no-code platforms, and UI/UX design, we empower companies of all sizes to turn their concepts into scalable, high-performing applications. As a certified Retool development partner and React Native expert (https://www.akveo.com/services/mobile-application-development/react-native), Akveo has successfully completed 500+ projects across sectors like finance, healthcare, eCommerce, and EdTech. Our team of experienced software engineers, designers, and business analysts works collaboratively to deliver top-quality solutions. From cross-platform mobile development to MVP creation and AI-driven automation, we are dedicated to providing exceptional results that surpass client expectations.Looking for work in App DesigningLocated in Warsaw, PolandFrom €3,000 for App DesigningWorked in Insurance (+6)Speaks English, German(+2)51-200 membersTepia
(0 review)Build more than an app. Build loyalty.
Tepia is a mobile development agency that is dedicated to building customer-focused experiences that prioritize the needs and preferences of each customer. We believe that the key to success in growing businesses is understanding and empathizing with customers, and that is why we base our work on not only the latest trends and best practices, but also on the latest developments in human psychology and behavioral research.Looking for work in App DesigningLocated in Los Angeles, United States (+5)From €19,998 for App DesigningWorked in Media (+2)Speaks English, Spanish11-50 membersLBM Solutions
(0 review)All-in-One Solution for Digital Excellence
LBM Solutions is a premier blockchain and software development company known for delivering secure, scalable, and future-ready digital solutions. With deep expertise in crypto wallet development, smart contracts, blockchain ecosystems, AI-driven applications, and custom enterprise software, we empower global businesses to innovate with confidence. Our team combines technical excellence, modern frameworks, and strategic thinking to build products that enhance efficiency, security, and user experience. From startups to large enterprises, LBM Solutions provides end-to-end development—covering planning, design, engineering, deployment, and long-term support. Dedicated to quality and continuous innovation, we help clients transform ideas into powerful, market-ready digital solutions that drive real business growth.Looking for work in App DesigningLocated in San Francisco, United StatesFrom €1,000 for App DesigningWorked in Banking & FinancialsSpeaks English51-200 membersFulminous Software
5(38 reviews)WE LOVE TO BUILD ASK FOR IT AND HAVE IT
Top awardedWe are Fulminous Software, a skilled web and mobile app development company with a proven history of creating popular and profitable apps. We're known for our knack for enhancing existing apps and websites to make them even better, ensuring people keep downloading and enjoying them. Our dedicated team is here to turn your ideas into reality. The company’s biggest strength is its team which I a mix of most ingenious and focused individuals who are adroit in whatever they do. They believe in delivering flawless and reliable solutions to clients that match business needs and drive business growth. We are looking for strategic partnerships from around the globe. If you are interested please contact us today. Client's Feedback About US: https://clutch.co/profile/fulminous-software-private#highlights https://www.bark.com/en/in/company/fulminous-software-private-limited/9AKJO/ Our Key services: * Custom Software development * Mobile App Development (Android App, iPhone App, Cross-Platform App) * Custom Game Development (AR, VR, iOS, Android, NFT, Metaverse, 2D, 3D) * Salesforce Development (Lightning, Implementation, Consulting) * Web Development * Mobile Game Development * Desktop Game Development * Xamarin App Development * Wearable Devices App Development * Enterprise App Development * CRM & ERP Development * Digital Marketing1 work in App DesigningLocated in Clarendon County, United States (+2)From €1,000 for App DesigningWorked in Video games (+9)Speaks English51-200 membersCOAX Software
4.8(10 reviews)Smart software solutions for travel, transport & logistics
COAX Software is your partner for smart software solutions for travel, transport & logistics. Since 2010, we’ve helped industry leaders design, build, and scale products that move markets forward. From sleek mobile apps to enterprise platforms, we deliver end-to-end development, team acceleration, and AI-driven solutions engineered to be reliable, scalable, and ROI-positive. Our integrated approach connects strategy, delivery, and growth—so your product ships faster, performs better, and compounds value over time. 🏆 Top-Rated Agency on Upwork 🏆 Experts Team with 100% Job Success Rating 🏆 16 000+ delivery hours on Upwork 🏆 Net Promoter Score 9.8/10 🏆 4.9/5 at Clutch.co What makes us different: - Deep Travel & Logistics Expertise We understand bookings, reservations, fleet management, customer loyalty, and compliance. We design solutions tailored to travel and transport operations—so your customers get seamless digital experiences. - AI & Automation at the Core From AI chatbots for customer care to predictive analytics for demand forecasting—and retrieval-augmented search for ops knowledge—we apply responsible AI practices to deliver measurable impact. - Flexible Partnership Models Choose what fits now and scales later: Discovery packages, fixed-scope acceleration, or dedicated squads. Need a quick MVP or expert consulting? We adapt to your goals and pace. - Proven Track Record 15+ years, hundreds of deliveries, and a team that’s 90% mid/senior. We’re known for on-time, on-budget execution and outcomes that compound. - Global Outlook, Remote DNA Rooted in Ukraine and delivering worldwide, we operate remote-first - combining nearshore accessibility with global reach. We’re certified and partnered: ISO 9001 - international standards of quality management ISO/IEC 27001 - international standards of information security AWS Certified Solutions Architect AWS Certified AI Practitioner Early Adopter Professional Scrum Master™ I Member of the techUK trade associationLooking for work in App DesigningLocated in Ivano-Frankivsk, UkraineFrom €2,000 for App DesigningWorked in E-commerce (+6)Speaks English, Ukrainian51-200 membersELEKS
5(1 review)Your trusted partner for guaranteed software delivery
Top awardedELEKS is your trusted partner for guaranteed software delivery. Combining over 30 years of industry insight with cutting-edge AI technology, we help businesses worldwide deliver their unique software vision through bespoke full-cycle solutions.1 work in App DesigningLocated in Las Vegas, United States (+14)From €20,000 for App DesigningWorked in Energy & Oil (+10)Speaks English, German(+1)1001-5000 membersAppStarter
(0 review)Looking for work in App DesigningLocated in Laguna Beach, United States (+1)From €10,000 for App DesigningWorked in Entertainment & EventsSpeaks English, French(+1)1-10 membersChudovo OÜ
5(21 reviews)Complex Systems Implementation
Highly recommendedTop awardedChudovo is a custom software development company, focused on complex systems implementation. Customers rely on our expertise, appreciate transparency in time, budget, visibility of work progress, and our assistance in achieving their business objectives with high-quality solutions. Our teams follow best development practices and methodologies and apply their experience in such industries as healthcare, finance, e-commerce, logistics, telecommunications, and others. In our portfolio, we have over 190 successfully implemented web, mobile, desktop, cloud, embedded, and AI projects. With our commitment to innovation, we bring together cutting-edge technologies, visionary strategies, and creative minds to breathe life into your visions and ideas.2 works in App DesigningLocated in New York, United States (+4)From €3,000 for App DesigningWorked in Hospitals & Healthcare (+19)Speaks English, German(+2)51-200 members