California, home to Silicon Valley, is a global fintech innovation hub. With the increasing demand for seamless, secure, and scalable financial applications, businesses are actively seeking top-tier fintech app development companies. From mobile banking solutions to AI-driven wealth management platforms, these companies are redefining the future of digital finance.

To help you choose the best partner, we have compiled a list of California’s top 10 fintech app development companies based on expertise, pricing, client portfolio, and industry recognition.

Best Fintech App Development Companies in California

RipenApps Technologies 

General Company Information:

  • Company Name: RipenApps Technologies​
  • Founder(s) Name: Saurabh Pandey
  • Company Website: https://ripenapps.com/​
  • Price Model: Both hourly and project-based
  • Charges Per Project: Typically ranges from $25 to $49 per hour​
  • Number of Employees: 51-200​
  • Ratings & Reviews: Clutch rating of 4.8/5 based on 50+ reviews​

Clients & Industries:

  • Top 5 Customers: Notable clients include Adidas, Dupont, and Bajaj Finserv​
  • Industries Served: Healthcare, Finance, E-commerce, Education, and Social Networking​

Technologies & Services:

  • Technologies They Work On: iOS, Android, Flutter, React Native, Node.js, Angular, and more​
  • Services Offered: Mobile App Development, Web Development, UI/UX Design, and Digital Marketing​

Employee & Client Feedback:

  • Employees Verbatim: “Collaborative environment with ample learning opportunities.”
  • Clients Verbatim: “Their commitment to deadlines and quality is commendable.”​

Awards & Certifications:

  • Recognitions: Featured in Top Mobile App Development Companies by Clutch and GoodFirms​

A3Logics Inc. 

General Company Information:

  • Company Name: A3Logics Inc.​
  • Founder(s) Name: Akhilesh Sharma​
  • Company Website: https://www.a3logics.com/​
  • Price Model: Both hourly and project-based​
  • Charges Per Project: Typically ranges from $25 to $49 per hour​
  • Number of Employees: 201-500​
  • Ratings & Reviews: Clutch rating of 4.7/5 based on 30+ reviews​

Clients & Industries:

  • Top 5 Customers: Notable clients include Johnson & Johnson, Pfizer, and Northwell Health​
  • Industries Served: Healthcare, Finance, Logistics, and E-commerce​

Technologies & Services:

  • Technologies They Work On: Java, .NET, PHP, Angular, React, and more​
  • Services Offered: Custom Software Development, Enterprise Solutions, Mobile App Development, and IT Consulting​

Employee & Client Feedback:

  • Employees Verbatim: “Supportive management with a focus on innovation.”
  • Clients Verbatim: “Their technical expertise and dedication stood out.”​

Awards & Certifications:

  • Recognitions: ISO 9001:2015 Certified and recognized by Deloitte Technology Fast 500​

Diffco US, Inc.

General Company Information:

  • Company Name: Diffco US, Inc.
  • Founder(s) Name: Vadim Peskov​
  • Company Website: https://www.diffco.us/​
  • Price Model: Both hourly and project-based​
  • Charges Per Project: Typically ranges from $50 to $99 per hour​
  • Number of Employees: 11-50​
  • Ratings & Reviews: Clutch rating of 4.9/5 based on 20+ reviews​

Clients & Industries:

  • Top 5 Customers: Notable clients include Uber, Accenture, and Yandex​
  • Industries Served: Transportation, Finance, Healthcare, and Social Media​

Technologies & Services:

  • Technologies They Work On: iOS, Android, AI, Machine Learning, and more​
  • Services Offered: Mobile App Development, AI Solutions, and Web Development​

Employee & Client Feedback:

  • Employees Verbatim: “Innovative projects with a collaborative team.”​
  • Clients Verbatim: “Their AI expertise significantly benefited our project.”​

Awards & Certifications:

  • Recognitions: Featured in Top AI Development Companies by Clutch​

Seasia

General Company Information:

  • Company Name: Seasia​
  • Founder(s) Name: RP Singh
  • Company Website: https://www.seasiainfotech.com/​
  • Price Model: Both hourly and project-based
  • Charges Per Project: Typically ranges from $15 to $25 per hour​
  • Number of Employees: 501-1000​
  • Ratings & Reviews: 4.5/5 based on 40+ reviews​

Clients & Industries

  • Top 5 Customers: JobsToday, Mahindra, Flipkart, Tera, Harley Davidson ​
  • Industries Served: Business services, information technology, healthcare & life sciences, consumer products & services, education, financial & payments, gaming, hospitality & leisure, manufacturing, real estate, advertising & marketing, legal & compliance, government, transportation & logistics, retail, art, entertainment & music, non-profit, media, other industries ​

Technologies & Services

  • Technologies They Work On: Artificial Intelligence, Blockchain, Cloud Computing, Infrastructure Services, Metaverse, QA Automation, Security Testing, Solution Architecture, UI/UX ​
  • Services Offered: Software development, mobile & web development, staff augmentation, IoT & cloud solutions, IT outsourcing, AI & machine learning, quality assurance, UI/UX design, digital transformation, low-code/no-code development ​

Employee & Client Feedback

  • Employees Verbatim: Not publicly available​
  • Clients Verbatim: “If Seasia Infotech wasn’t helping me, the business would definitely not be where it is today. They have been able to implement every project that was asked of them to a high-quality level. Seasia Infotech is responsive and communicates well. They are a trustworthy group who treats their customer’s work with respect.”

Awards & Certifications

  • Recognitions: CMMI Level 5 certification, ISO certification, Salesforce Partner, Google Partner, Microsoft Certified, ITIL Best Practices

Persistent Systems

General Company Information:

  • Company Name: Persistent Systems​
  • Founder(s) Name: Anand Deshpande
  • Company Website: https://www.persistent.com/​Persistent
  • Price Model: Both hourly and project-based​
  • Charges Per Project: Not publicly disclosed​
  • Number of Employees: Approximately 23,000 as of 2024 ​
  • Ratings & Reviews: Recognized as a leader in digital transformation services 

Clients & Industries:

  • Top 5 Customers: Notable clients include leading companies in the banking, financial services, healthcare, life sciences, and technology sectors ​
  • Industries Served: Banking & Financial Services, Insurance, Healthcare, Life Sciences, Industrial, Software, Telecom & Media ​

Technologies & Services:

  • Technologies They Work On: Cloud computing, Internet of Things (IoT), Big Data analytics, Artificial Intelligence (AI), Machine Learning (ML), Blockchain ​
  • Services Offered: Application Development & Management, Cloud & Infrastructure, Consulting, CX Transformation, Data & Analytics, Enterprise Integration, Enterprise IT Security 

Employee & Client Feedback:

  • Employees Verbatim: “We always want to be first to transform new ideas into tangible business results while optimizing our use of resources.” ​
  • Clients Verbatim: “Persistent Systems builds digital-transformation software for financial services, healthcare, telecom, and media companies, among others.” 

Awards & Certifications:

  • Recognitions: Recognized as a Leader and Star Performer in Everest Group’s Software Product Engineering Services PEAK Matrix® 2024

SuperSourcing 

General Company Information

  • Company Name: SuperSourcing
  • Founder(s) Name: Mayank Pratap Singh
  • Company Website: https://supersourcing.com/
  • Price Model: Both hourly and project-based
  • Charges Per Project: Custom pricing based on client needs and project scope
  • Number of Employees: 51-200
  • Ratings & Reviews: 4.8/5

Clients & Industries

  • Top 5 Customers: Razorpay, OpenAI, Swiggy, Zomato, BharatPe
  • Industries Served: Technology & SaaS, Fintech & Banking, E-commerce & Retail, Healthcare & Pharma, Education & EdTech

Technologies & Services

  • Technologies They Work On: Artificial Intelligence, Blockchain, Cloud Computing, Infrastructure Services, Metaverse, QA Automation, Security Testing, Solution Architecture, UI/UX ​
  • Services Offered: Software development, mobile & web development, staff augmentation, IoT & cloud solutions, IT outsourcing, AI & machine learning, quality assurance, UI/UX design, digital transformation, low-code/no-code development ​

Employee & Client Feedback

  • Employees Verbatim: “SuperSourcing allows employees to grow and learn from top industry professionals. The company culture is supportive and innovative.”
    • “A great place to work with a mission-driven approach to hiring.”
  • Clients Verbatim: “SuperSourcing helped us hire deeply vetted developers within days, saving us time and effort.”

Awards & Certifications

  • Recognitions: LinkedIn Top 20 Startups in India – 2023 & 2024, Google AI-Accelerated Top 20 Startup in India – 2024, Best AI-Powered Tech Hiring Platform – 2024, Recognized by Nasscom as an Emerging IT Staffing Leader

Azilen Technologies – California, USA

General Company Information:

  • Company Name: Azilen Technologies​
  • Founder(s) Name: Naresh Prajapati and Niket Kapadia​
  • Company Website: https://www.azilen.com/​
  • Price Model: Both hourly and project-based​
  • Charges Per Project: Typically ranges from $20 to $29 per hour
  • Number of Employees: Approximately 390 as of 2023
  • Ratings & Reviews: Techreviewer rating of 4.9/5

Clients & Industries:

  • Top 5 Customers: Ganter, UKheshe, ClearingBid
  • Industries Served: FinTech, HRTech, InsurTech, Retail, Manufacturing, CleanTech ​

Technologies & Services:

  • Technologies They Work On: AI, IoT, Blockchain, Cloud, DevOps 
  • Services Offered: Product Engineering, Software Development Consulting, User Experience Design, Architecture Engineering, Software Product Development, Software QA Services, Application Modernization, Data Engineering, DevOps Services ​

Employee & Client Feedback:

  • Employees Verbatim: “Azilen Technologies is a Product Engineering company. We collaborate with organizations to propel their software product development journey from Idea to Implementation and all the way to product success.” 
  • Clients Verbatim: Not publicly disclosed​

Awards & Certifications:

  • Recognitions: 

TechAhead – Los Angeles, California, USA

General Company Information:

  • Company Name: TechAhead​
  • Founder(s) Name: Vikas Kaushik ​
  • Company Website: https://www.techaheadcorp.com
  • Price Model: Both hourly and project-based​
  • Charges Per Project: Typically ranges from $25 to $49 per hour ​
  • Number of Employees: Approximately 150+ 
  • Ratings & Reviews: Clutch rating of 5.0/5 based on 101 reviews 

Clients & Industries:

  • Top 5 Customers: Notable clients include Fortune 500 companies and startups across various industries 
  • Industries Served: Insurance, Finance, Healthcare, Fitness, Entertainment, Productivity, Travel, Retail, Logistics

Technologies & Services:

  • Technologies They Work On: iOS, Android, Flutter, React Native, Xamarin, PHP, Node.js, Angular, .Net, AWS, Azure, MySQL, MongoDB, HTML5, WordPress ​
  • Services Offered: Mobile App Development, Web and Software Development, UI/UX design, Game Development, Wearable App Development, Blockchain ​

Employee & Client Feedback:

  • Employees Verbatim: “TechAhead is a global leader in Mobile Platforms that Fortune 500 companies trust to Startups.” 
  • Clients Verbatim: “The team at TechAhead is commended for delivering high-quality products, often exceeding client expectations.” ​

Awards & Certifications:

  • Recognitions: The Webby Award Honoree 2024 for App Features: Experimental & Innovation

Goji Labs – Los Angeles, California, USA

General Company Information:

  • Company Name: Goji Labs​
  • Founder(s) Name: David Barlev​
  • Company Website: https://www.gojilabs.com/​
  • Price Model: Both hourly and project-based​
  • Charges Per Project: Typically ranges from $100 to $149 per hour​
  • Number of Employees: 11-50​
  • Ratings & Reviews: Clutch rating of 5.0/5 based on 20+ reviews​

Clients & Industries:

  • Top 5 Customers: Notable clients include the World Health Organization (WHO), the World Wildlife Fund (WWF), and UCLA​
  • Industries Served: Healthcare, Education, Non-Profit, Technology, Startups​

Technologies & Services:

  • Technologies They Work On: React, Angular, Vue.js, Node.js, Python, Django, Ruby on Rails, iOS, Android​
  • Services Offered: Web Development, Mobile App Development, UI/UX Design, Product Strategy​

Employee & Client Feedback:

  • Employees Verbatim: “Collaborative environment with a focus on innovation and quality.”​
  • Clients Verbatim: “Their ability to understand our vision and translate it into a functional product was impressive.”​

Awards & Certifications:

  • Recognitions: Featured in Top App Developers by Clutch and GoodFirms​

Mercury Development – San Diego, California, USA

General Company Information:

  • Company Name: Mercury Development​
  • Founder(s) Name: Joshua Greenman​
  • Company Website: https://www.mercdev.com
  • Price Model: Both hourly and project-based​
  • Charges Per Project: Not publicly disclosed​
  • Number of Employees: Approximately 180 engineers​
  • Ratings & Reviews: DesignRush rating of 5.0/5 based on client reviews​

Clients & Industries:

  • Top 5 Customers: Notable clients include businesses that grew to billion-dollar IPOs using Mercury as their technology provider​
  • Industries Served: Various sectors, including startups and Fortune 500 companies​

Technologies & Services:

  • Technologies They Work On: iOS, watchOS, Android, and various cutting-edge technologies​
  • Services Offered: Custom Software Development, Mobile App Development​

Employee & Client Feedback:

  • Employees Verbatim: “Mercury provides exceptional quality of service and offers cutting-edge tech solutions across the board.”​
  • Clients Verbatim: “Mercury Development has worked in various development capacities for different companies, creating apps for car sales, fixing a fire safety app, and more.”​

Awards & Certifications:

  • Recognitions: Multiple iOS and watchOS apps featured by Apple; Android apps featured by Google

Conclusion

California’s top FinTech app development companies are shaping the future of digital finance, from AI-powered banking to blockchain-driven solutions.

Ready to build a cutting-edge FinTech app? Partner with a leading California-based FinTech app development company SuperSourcing to create secure, scalable, and innovative financial solutions. The future of finance starts now—let’s build it together! 

FAQs

1. What factors should I consider when choosing a fintech app development company?

Look for experience, security compliance, scalability, technology stack, and client reviews to ensure the best fit for your business.

2. How much does developing a fintech app in California cost to create?

The cost depends on complexity, features, and development hours, typically ranging from $50,000 to $500,000+ per project.

3. Which industries benefit the most from fintech app development?

Fintech solutions benefit industries such as banking, insurance, wealth management, cryptocurrency, and payment processing the most.

4. Do fintech app development companies offer post-launch support?

Most reputable firms provide ongoing maintenance, security updates, and feature enhancements to ensure long-term success.

5. What security measures should fintech apps have?

Fintech apps should include end-to-end encryption, multi-factor authentication (MFA), biometric security, and fraud detection systems to ensure user data safety.