LEONAPP.
A school-wide digital voucher platform. Replaced paper focaccine (snack) vouchers at Istituto Leone XIII with QR-authenticated redemption and a verifiable consumption ledger.
Three surfaces.
Google Workspace SSO, one-click block purchase of 10 vouchers, QR shown at counter, monthly cap charged to school tuition.
Camera-based QR scan, real-time validation, last-5 scan history, role-scoped access for canteen staff.
Enrolment with parental consent, monthly billing export (xlsx), audit trail, downloadable records.
Stack & deployment.
PHP, JavaScript, MySQL on Ubuntu 22.04 / Apache. OVH VPS (2 vCore, 4 GB RAM) at ~€12/month. TLS via ZeroSSL with 90-day auto-renewal. Eleven database tables. Deployed whole-school during 2022–24.
Governance.
I wrote a committee charter so the platform outlives its founders — student representatives, an IT-department seat, emergency-replacement provisions from the administration. It's currently paused pending successor handover.
On roadmap (paused).
Pre-order with reduced pricing · ML-driven demand forecasting · catering meal-voucher integration · student-initiative workflows.
Co-authored with Niccolò Pagano. Source: github.com/leonapp-project/www-public-repo.