Our analysts identified the top outsourcing software development companies in California providing cutting-edge services that answer key business problems, from building technical software, designing websites or mobile apps to integrating operating systems and more. Narrow down your search by team size, budget, reviews and more to select the best developer for your company’s 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.
Where Exceptional Apps Are Just The Beginning
When enterprises need custom apps across healthcare, fintech, and ecommerce, BitsWits delivers mobile and web platforms using React Native, Flutter, Swift, and blockchain stacks. The Houston-based studio handles iOS, Android, and cross-platform builds with in-house AI, IoT, and AR/VR capabilities. Clients...
Top Services:
- Mobile App Development
- Software Development
- VR/AR
- Blockchain
- AI Development
- Show more
- Location
- Los Angeles, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $25/hr
- Minimal Budget
- $25,000 - $50,000
- Portfolios Count
- 12 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsBitsWits Services
Data sourced from the agency's DesignRush profileFitNow Wisu Soul Scribe Grease Monkey Beats
BitsWits Reviews & Testimonials

Mobile App Development Review from Sydney Malone
With the development of our Mobile App, BitsWits performed a fantastic job. Their team was quick to respond and produced a great application that runs smoothly on all platforms. We are quite happy with the result.

Mobile App Development Review from Benson Sung
They created a Mobile app for Medical services, and patient management has changed greatly as a result. The app works well with our current systems, is safe, and is simple to use. Their team produced a top-notch product on schedule while paying close attention to our unique requirements. We are really pleased with their work and heartily recommend BitsWits to anyone in need of app development services.

Mobile App Development Review from Steve Garry
The outcomes of our collaboration with BitsWits to develop an Online Food delivery app were outstanding. Real-time tracking is integrated into the app, which makes it easy to use and has significantly enhanced our customer support. Their development staff was quick to respond and took care of all of our requests. We couldn't be more pleased with the result!
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
Solveit
Award WinnerRecipient of a Best Design Award for outstanding work.100% Focused on Apps
We design and develop top-rated mobile and web apps for startups and SMEs. E-commerce, Healthcare, Marketplaces, and more. Our clients rate us for 5 out 5 - check out why!...
Top Services:
- Mobile App Development
- Software Development
- Web Design
- Design Services
- AI Development
- Show more
- Location
- San Francisco, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $45/hr
- Minimal Budget
- $25,000 - $50,000
- Portfolios Count
- 32 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsSolveit Services
Data sourced from the agency's DesignRush profileHemie.se RVista Lifepal AB Gumb Jabal MyRaceData JobJob.md Burger King OIIO Leviosa
Solveit Reviews & Testimonials

Staff Augmentation Review from Mitya Smusin
Solveit managed our comprehensive eCommerce project, developing a full-featured web platform with Node.js and React technologies. The agency also created a Flutter-based mobile app for seamless data synchronization across iOS and Android devices. We were thoroughly pleased with Solveit's expertise and adherence to deadlines. It provided timely updates and communicated openly about our project's status. Solveit's proactive approach and transparency were exceptional, particularly during the staff augmentation process, where the agency efficiently matched us with qualified candidates and facilitated a smooth onboarding. We were satisfied with Solveit's high-quality work and exceptional support.

Design Services Review from Anna Harissis
They have an incredibly hardworking team at affordable pricing. SolveIt has built the app earlier than expected, and they continue to complete new tasks within the client's budget and timeline.

iPhone Review from Gabriel Sabadin
We engaged SolveIt to develop a minimum viable product (MVP) app, including a user-friendly iOS design, an artificial intelligence (AI) model, and a monetization strategy while ensuring General Data Protection Regulation (GDPR) compliance and preparing for future integrations. Despite a tight deadline, SolveIt delivered the app on time and efficiently handled beta-testing within three months, allowing us to gather feedback and launch successfully. We acquired our first 1,000 users within a month of launching the app. SolveIt's team communicated effectively, addressed issues proactively, and maintained a high level of autonomy, bringing diverse expertise that greatly benefited our project. We appreciate the agency's dedication and professionalism.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsYou Think It, We'll Build It.
Idea Maker is a U.S.-based software development agency helping businesses transform ideas into scalable digital products. Our expert team specializes equally in mobile apps, custom software, AI-powered solutions, and modern web platforms...
Top Services:
- Mobile App Development
- Software Development
- Web Development
- AI Development
- Web Design
- Show more
- Location
- Irvine, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $125/hr
- Minimal Budget
- $25,000 - $50,000
- Portfolios Count
- 10 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsIdea Maker Services
Data sourced from the agency's DesignRush profilePlane Fax Generac Politifact Outschool Advance CPE AES Blodgic Fujikikai Yellowbook CPE
Idea Maker Reviews & Testimonials

Software Development Review from Jessi Navarro
IdeaMaker supported Poynter's Digital Experience work and our PolitiFact site migration to Wordpress. The migration launched successfully, moving our infrastructure forward significantly at a pivotal time and we appreciated their help getting us onto the new system.

Web Development Review from Meghan Wallace
When you're launching a nonprofit from scratch, every resource matters and Tom stepped in with extraordinary generosity. He brought his team in to help build the Survive Out Loud website, and the result is something were genuinely proud of.Tom and his team didn't just build a site. They listened carefully, asked thoughtful questions, and translated our vision into something clean, professional, and aligned with our mission. They were patient, collaborative, and incredibly responsive throughout the entire process.For a small organization trying to get off the ground, this kind of support is transformational. We are deeply grateful for Tom and his team and would recommend them without hesitation

Software Development Review from Kevin Nagel, MBA
IdeaMaker did an amazing job developing our cutting-edge software. They took our concept and turned it into a fully functional, scalable software platform that truly brought our vision to life. Their technical expertise, clear communication, and problem-solving mindset made the entire process seamless. IdeaMaker consistently delivered high-quality work on time and with care. We couldn't have asked for a better development partner!
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsLanex Corporation - Tailor-made solutions for your business needs
Here at Lanex Corporation, we are a full-cycle software development service provider specializing in bespoke digital solutions for startups and companies globally. We build scalable and secure products designed to impact your brand and provide the best digital experience for your users...
Top Services:
- Mobile App Development
- Software Development
- IT Services
- Web Development
- Staff Augmentation
- Show more
- Location
- San Francisco, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $49/hr
- Minimal Budget
- $25,000 - $50,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsLanex Corporation Services
Data sourced from the agency's DesignRush profileEcca Hris GE Reports
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