MetroBUC
Bucharest metro riders needed reliable routing and arrival information that also worked underground, where connectivity drops.
A native Kotlin app with offline metro routing, real-time arrival information and push notifications; a companion website; CI/CD automation; Google Play publishing; advertising integration; and Firebase with production crash monitoring.
Reached 700+ organic installs within roughly four months, with around 60% of installs (420+) staying monthly active, at a 40.7% store-listing conversion rate. Ongoing product updates and live troubleshooting continue.