We built Kassaa Pro by spending time in actual restaurants and retail stores — observing how cashiers take orders, how managers check inventory, and how owners want to see their numbers. Every design decision was validated against real-world usage, not assumptions.
Cross-platform UI system
We designed a unified component library that adapts to each platform. Core elements — product grid, cart, payment flow — share the same design language but are optimized for each context. The tablet version prioritizes touch targets and speed. The desktop version takes advantage of screen real estate for multi-panel views. The phone version focuses on the most critical functions in a compact layout. The web version provides full access for remote management.
Offline-first architecture
The application stores transaction data locally first, then syncs to the cloud when connected. We built a conflict resolution system that handles edge cases — like two devices updating the same inventory count while offline. The user never has to think about connectivity status; the system handles it transparently.
F&B workflow engine
We built configurable workflows for different business types. Restaurant mode includes table management, kitchen ticket routing (separate tickets for kitchen and bar), modifier stacking (extra spicy, no onions, double portion), and split billing. Retail mode includes barcode scanning, stock alerts, and purchase order management. Business owners select their mode during setup and can customize further.
Iterative usability testing
We tested every major flow with real F&B staff — not just owners, but the cashiers and kitchen staff who use the system all day. Testing revealed critical insights: cashiers need one-tap order additions during rush hour, kitchen staff need large-font ticket displays they can read from a distance, and owners need a daily summary they can check from their phone in 30 seconds.
Local payment integration
Kassaa Pro integrates with QRIS for universal QR payments, supports cash and split-payment scenarios, and provides end-of-day reconciliation across all payment methods. The payment flow was designed to be completed in under 5 seconds for the most common transaction type.