Case Study
Donation App
Autonomous donation kiosk software for legacy tablets
Cross-platform donation software combining .NET 10 backend services with React Native terminals and PostgreSQL, including SumUp native payment integration with a 1.39% fixed fee model.
- .NET 10
- React Native
- PostgreSQL
- SumUp Native
Architecture Highlights
- Offline-tolerant transaction queue for unstable kiosk connectivity environments.
- Secure payment intent lifecycle with provider-specific native bridges.
- Operational dashboard endpoints for remote campaign and device oversight.
Business Outcomes
- Enabled nonprofit-grade donation collection on reused hardware.
- Lowered fee pressure with fixed 1.39% payment processing economics.
- Cut support load via autonomous kiosk operation and centralized monitoring.
Delivery Metrics
- 1.39% fixed SumUp fee integration
- Tablet-first kiosk flow optimized for touch usage