India’s real-time payment network now processes well over 18 to 20 billion transactions every month, worth more than ₹24 lakh crore. UPI handles roughly 85% of the country’s digital payments and a large share of real-time payments worldwide. Hundreds of millions of people and tens of millions of merchants use it daily.
That scale has pushed banks, fintech startups, wallets and retailers to build their own UPI-enabled apps. Choosing the right technology partner decides whether a product feels fast and secure or frustrating. Here are ten companies worth evaluating.
1. Dev Technosys
Overview: Dev Technosys builds mobile and web products across fintech, healthcare and on-demand services. Its payment work covers UPI integration, wallet features, KYC flows and admin dashboards, with attention to security and compliance during development.
Best for: Startups and mid-sized businesses that need a complete payment product built end to end.
2. Hidden Brains
Overview: Hidden Brains is a long-established software firm with a broad portfolio spanning mobility, enterprise tools and financial applications. Its teams handle payment gateway connections, backend architecture and app maintenance for clients in several industries.
Best for: Enterprises that want a partner with long-term support experience.
3. Space-O Technologies
Overview: Space-O Technologies develops custom mobile apps and AI-driven solutions. For payments, it works on UPI integration, transaction history modules and personalised features, combining a clean interface with dependable server-side logic.
Best for: Businesses that want smart features such as spending insights inside a payment app.
4. OpenXcell
Overview: OpenXcell offers product engineering, design and quality testing under one roof. Its payment projects typically include secure checkout flows, bank linking, and testing routines that catch failures before real users do.
Best for: Teams that care about thorough testing and polished interface design.
5. MindInventory
Overview: MindInventory focuses on app development with a strong design culture. It supports payment products through cross-platform builds, API integrations and scalable cloud setups, helping apps cope with sudden spikes in transaction volume.
Best for: Companies launching on Android and iOS simultaneously with a limited budget.
6. Techugo
Overview: Techugo works with startups and established brands on mobile-first products. Its fintech experience includes wallet creation, bill payment modules and bank-grade authentication, delivered through agile sprints with frequent client reviews.
Best for: Founders who want close collaboration and frequent progress updates.
7. Code Brew Labs
Overview: Code Brew Labs builds apps for markets in India and the Middle East. Its payment capabilities cover UPI and card integration, merchant onboarding tools and real-time notifications, with a focus on getting products live quickly.
Best for: Businesses planning a quick market entry or regional expansion.
8. Mobisoft Infotech
Overview: Mobisoft Infotech delivers digital products for healthcare, retail and financial services. For payments, it handles regulatory-aware architecture, secure data storage and integrations with banking systems, supported by structured documentation.
Best for: Regulated businesses where audit trails and compliance matter.
9. Simform
Overview: Simform is an engineering-led firm known for cloud, data and modernisation work. Its payment projects lean on microservices, automated deployment pipelines and performance monitoring, which keeps large transaction systems stable under heavy use.
Best for: Organisations upgrading legacy payment systems or expecting very high traffic.
10. Ellocent Labs
Overview: Ellocent Labs creates mobile and web solutions for small and mid-sized clients. Its payment services include UPI-enabled checkout, subscription billing and reporting dashboards, delivered with flexible engagement models.
Best for: Small businesses that want a focused, cost-conscious build.
How to Choose the Right Partner
A polished portfolio is only the starting point. Ask each company how it handles NPCI guidelines, data encryption, fraud detection and PSP bank integration. Request a walkthrough of a payment product it has already shipped, and find out who will maintain the app after launch.
Budget matters too, but the cheapest quote often hides costs in security fixes and rework. Compare the scope, timeline and support terms side by side. A short paid discovery phase is a sensible way to test working chemistry before committing to the full project.
Final Thoughts
UPI adoption shows no sign of slowing, and new use cases keep emerging, from credit on UPI to cross-border acceptance and offline payments. Companies that invest in a reliable, secure and easy-to-use app today are better placed to benefit from that growth. Use the list above as a starting point, speak to two or three firms, and pick the one that best matches your goals, budget and compliance needs.