Top App Developers in California

Branding Support, Web Dev & Design for Travel Company

Delaney has been kind and really helpful with everything, including when the design needed tweaks. My partner and I are first-time business owners, so this has been a learning process. Delaney has tried to understand our vision as best as possible and helped us communicate that to the designers and developers to ensure the results are exactly what we want.

Mobile App Dev & UI/UX Design for Fantasy Soccer Game

Wve Labs's project management was very good. Anthony was very helpful and communicated well with us about our progression and any setbacks. Our primary forms of communication were virtual meetings, emails, and messaging apps.

Mobile App Dev for Mental Health Program

Wve Labs has been very helpful and employ nice people. We’re not tech-oriented, so we often ask them for advice on things that we’re not sure about. Then, they let us know when something might not work or if there’s a better solution available, but the final decision is always up to us. They’re happy to go over any concerns and are there to guide you through the process.

Design & Development for Project Management App

The workflow was extremely smooth and we communicated regularly through Skype. They were responsive, understanding, and helpful throughout the entire process. Wve Labs went above and beyond at every stage of the development of our app.

IT Staff Augmentation for Digital Solutions Company

They ran a really big project with many stakeholders and really went out of their way to ensure that all stakeholders are consulted and eased in their concerns. They were also extremely flexible with the changes we requested and always completed all the projects on schedule. The team from Bluelight Consulting was able to work with our legacy applications. They containerized them and created a CI pipeline to support building and deploying to GKE.

Web Development for Yacht Repair & Maintenance Company

Their project management was excellent—clear communication, regular updates, and a structured approach kept everything on track. They consistently delivered milestones on time and were very responsive whenever our needs changed or new requests came up. We always felt supported and confident that our priorities were being addressed quickly and professionally.

Web Design & Development for Medical Technology Company

Dustin’s responsiveness and timely delivery of the needed deliverables have been great. Previously, our website team wouldn’t be able to hit our tight deadlines and would take longer to work on pages than we needed. Dustin has been able to work seamlessly with our timelines without any issues. How responsive and helpful they are is impressive; they always come to the table with solutions.

Salesforce UI/UX Dev & Maintenance for Cannabis Distributor

Sidebench is outstanding at communication and proactive at project management. Whenever they ask us to do something, they follow up very quickly if we don’t react right away. If there have been delays, it’s because we needed time to get the required details. They’ve been very patient with us, but they are also aggressive with their follow-ups.

Frontend Digital Platform Dev for Family Services Provider

The assigned project manager is highly proactive, so we’re able to assume a laissez-faire approach. They always meet the milestones that they mapped out at the beginning of the project, but we still hold weekly calls to track their progress. They are professional, comprehensive, prompt, and they deliver amazing work.

Mobile App Dev for Health Insurance Company

They can transform a simple idea or concept into a concrete deliverable in a short timeframe. They do all the research and hard work in between without us having to worry. They've made it easy to add to our roadmap as needed.

UI/UX Design & User Research for Behavioral Health Company

They’re exceedingly proactive in addressing concerns and finding ways to mitigate the issues. Their communication efforts are equally impressive, which gives us the impression that our success is their top priority.

Web Design & Salesforce Integrations for Automotive Company

They’ve been on top of the project since day one. Even after our first meeting, they showed great enthusiasm for development. That’s been really positive for us, especially given all the thought we’ve put into the project.

AI Development for Amazon & PPC Marketing Company

They were great to work with. Eitan was straightforward and upfront about costs and risks. They were super organized and kept us updated throughout the entire project. Anytime we had a question or needed something adjusted, they were quick to respond and made sure we felt heard. They delivered on time and within budget. Overall, their communication was spot-on, and we always felt like we were in good hands.

AI-Based Platform Development for Financial Consulting Co

GenAI.Labs was exceptional in their project management. Their approach was organized, proactive, and transparent. They kept us informed with regular updates and promptly addressed any questions or changes. Every deliverable was completed on schedule, fostering a seamless working relationship.

ML & AI Models Dev & Data Workflow Automation for University

GenAI Labs excelled in project management throughout our collaboration. The team was proactive, well-organized, and transparent about their progress. They maintained clear and consistent communication, providing regular updates and promptly addressing any questions or adjustments we requested.

Website & App Design & Development for GRC Solutions Company

The entire team offers good delivery, feedback, and response. The team is dependable and reliable, sticking to the project's plan, offering feedback, and pushing back on the right things.

Mobile App Dev & Support for Student-Focused Marketplace

DADEN has a great ability to work with beginners in the technology space. We’re in college ourselves, and the oldest member of our team is 21 years old. Although some of us have some technical knowledge, neither of us had the knowledge required to develop an application this complex. Other companies might find it difficult to work with inexperienced teams, but DADEN has been very patient with us, and whenever we’ve had questions, they’ve answered them. Engaging in these kinds of technology projects can be intimidating, but DADEN’s knowledge, patience, and expertise have made this project less intimidating.

Azure & PHP Database Dev for Financial Company

The other big difference we found with them is that they have a lot of experience taking their products full cycle, so they know the business end of things as well. That knowledge gives us a significant advantage going into production and marketing of the product as opposed to working with someone who exclusively codes in a vacuum. I really appreciate the blend of development expertise and business know-how that they bring to the work. Knowing that their decisions are not just made from a purely technical perspective but take into account whether it’s an economically smart decision is really comforting.

Web Design & Dev for Healthcare Company

Very communicative with expectations and timelines. Always replied to requests quickly and with clear objectives. Very cooperative in brainstorming solutions and work arounds for an outdated system. The collaborative spirit in which they approach the projects was impressive. Rather than just checking a box they would recommend better executions when available.

UI/UX Design & Web Development for SaaS Company

Moonstone Interactive provides excellent and professional project management. Our project manager managed resources, tasks, responsibilities, and target dates. The Moonstone team was very responsive. Moonstone’s team is personable, professional, responsive, collaborative, and skilled.

SEO & Web Development for Branding & Marketing Company

We were assigned a project manager that was responsible for creating a detailed project plan that included detailed project tasks, responsibilities, and target completion dates. The Moonstone team was very responsive and addressed all our project needs and expectations. The engagement went very well and our client was very impressed with the synergy and collaboration between our team and Moonstone's team.

Apps Dev & Process Automation for Financial Software Company

The impact BNMA had on our internal operations was truly game-changing, demonstrating their technical expertise and value across multiple projects. The enhancements to our core applications allowed us to refine and improve building the internal systems that power our world-leading products, ensuring they met evolving our business demands. Additionally, their unification of the SPCF framework enabled us to seamlessly achieve cross-platform development, reducing platform-specific challenges and improving system compatibility. In the final phase, BNMA implemented for us robust build automation processes, resulting in faster deployments and enhanced operational efficiency.

Custom Software, E-Commerce & Chatbot Dev for Porcelain Co

The results from BNMA's work were exceptional. They surpassed our expectations by delivering solutions that significantly impacted our business and drastically increased our revenue. They greatly reduced our order processing time, leading to faster deliveries and happier customers. By automating customer inquiries with the AI chatbot, they saved us from needing to hire additional staff, which reduced costs.

Custom Software Development for Financial Services Firm

The team showcases remarkable efficiency in comprehending and resolving challenges, consistently employing cutting-edge software development methodologies. They not only consistently meet deadlines but often deliver ahead of schedule. The caliber of their work is outstanding, and their professionalism is unparalleled. Their ability to seamlessly integrate with our team amplified our collaborative synergy.

App Development for Digital Yearbook Startup

ISBX has a variety of resources in different departments. When we had a design or development question, we knew whom we could go to. This indicates that ISBX is knowledgeable across various areas and can provide expert guidance when needed.

Web Design, SEO & Video Production for Interior Design Firm

What impressed me most about Novaera was their creativity combined with how responsive they were. Onur personally made sure everything went smoothly, which gave us a lot of confidence throughout the project.

Website Revamp & SEO for Hotel Management Co

What impressed me most was how deeply they tried to understand my business before touching a single line of design or development. They didn’t just build a website, they analyzed our guests, our brand, and what really matters in hospitality. Their creativity, speed, and ability to turn feedback into immediate action felt genuinely unique. It’s rare to find an agency that combines strong technical skills, real industry understanding, and such a proactive attitude all at once.

Mobile App Design & Dev for Sports Trading Card Company

Our project has consisted of open dialog and communication. We've set up milestone meetings to discuss the project and see how everything is working. Overall, our communication has been relatively seamless, and everything has been always on time.

UX/UI Design & Dev for Smart Baby Bottle Company

Brash Inc. was consistently proactive in informing me of any changes to the timeline and overall roadmap. They are solid in communication and proactivity. Throughout our journey, Brash Inc. has maintained constant communication and prioritized managing my expectations as a client.

UI/UX Design, Mobile App & Software Dev for for Dental Co

Throughout the entire process, Brash Inc. has always been available to answer our questions. Their communication skills have been top-notch. Brash Inc. has basically guided me throughout the entire process, which is something I had never experienced working with other companies.

Product Dev & Design for Medical Technology Company

Richard's team at BRASH was timely, reasonable, and communicated well regarding any delays due to third-party vendors. They kept our team apprised on any changes. They were extremely responsive to and patient with our needs and any questions or concerns we had due to our lack of engineering experience. They also communicated well with our App developer to make BRASH's hardware design, and our separate mobile App design seamless.

AWS-Based Software Dev & UX/UI Design for Chip Manufacturer

They're always on time and communicate well. The team is always asking for feedback and is open to it. They're willing to listen and understand what we need. They manage the project using Jira, Microsoft Teams, and Zoom.

Website Design & Development for Creative Studio

Empat’s project management was structured and transparent. They used tools like Notion and Slack for collaboration and weekly syncs for progress updates. Milestones were delivered on time, and the team was highly responsive and adaptive to scope changes, offering solutions rather than just flagging issues.

Web Platform Development for Law Firm

We’ve worked with several developers, but Lexis Solutions is the only partner that does what they say they’ll do. Their commitment to their promises, coupled with their innovation and attention to detail, truly set them apart from others in the field.

Web Development for Business Consulting Company

The project is unique with nothing of the sort on the market. We did not believe it could be done as we imagined it - with all the complexity of links between resources and the actual parsing of all those different types of legal acts. But we did it and that's what's most impressive. The general feedback would be that Emil, Milush and Stefan made what seemed impossible possible.

Application Testing for Software Company

All the team members always gave more than expected. Their knowledge was awesome, and they applied it to the project.

Software Dev & Integration for Document Management System

The knowledge of everyone involved in the process was impressive. Compared to similar vendors, their team gives their honest opinion about how the project is going. They don’t wait until the last minute to report on any issues. Creativa Consultores is forthcoming, providing excellent insights and suggestions.

Dev & Design Services for Web Development Agency

What stood out most about Closeloop Technologies was their creative approach to web development. They transform complex ideas into stunning web experiences, and their commitment to understanding our unique needs was highly commendable.

Quotation System Development for Cybersecurity Company

The crew has been creative and dependable. Their knowledge and expertise are commendable. They complete their work successfully and on time.

Mobile App MVP Development for Software Company

I personally had a blast working with Alok. He brought a ton of new ideas to the table and never hesitated to question/object any design ideas we were thinking about to help us improve our UX. He also took all our design feedback gracefully and delivered new updates on time, every time.

Job Tracking System Development for Staffing Agency

The depth Closeloop goes to understand our problems and help us come up with the ideal solutions is above and beyond. They are so agile, creative, disciplined and thorough. Beyond that we just have a lot of fun working together.

Proprietary Web App Development for Financial Fund

Jelvix has been responsive to our changing demands and provide us with up-to date and timely communication of the project status. We find Jelvix’s ability to grasp the requirements and develop the application quite impressive, from reviewing the functional specifications and Jiras.

Custom Mobile App Dev for AR Company

Project management was conducted via Slack, with good communication and dedicated team members. Assigning the exact right people from the start was one area for improvement, as we have had multiple developers over time.

Mobile App Development for Healthcare Company

Project management has been a great experience. They're very good at communicating with us; we constantly speak to the project manager on an update call. Moreover, if we reach out to them about a bug or an issue, their project manager responds quickly to address the situation.

AR App Dev for Technology Company

We meet weekly for approx 1hr with our Jelvix project manager via google video calls to discuss dev status and make adjustments. We also communicate via email and Slack daily. The communication has been excellent, and they truly seem to care about our success.

iOS Design & Development for Music Producing App

The communication between myself and the Jelvix team was always easy. The project manager is very proficient in English. Jelvix has gotten great reviews, happy clients, and more clients because of it, making them less and less available.

UI & UX Audit for Mobile Donation App

The team was also very flexible with us and were able to come up with creative solutions for conducting user interviews and surveys. They quickly assessed and were able to move forward on providing us with their analysis in a timely manner.

Livestream App Development for IT Services Company

Despite numerous modification requests that occurred throughout the project's execution, Ridhi was always responsive and accommodating to help sort things out quickly. We especially appreciate their schedule flexibility, responsiveness, and willingness to go above and beyond.

Web App Dev for Manufacturing Company