productivity timezone reminders remote work Java Android widgets mobile app Utility Productivity
Time Zone Converter
Android
Google Play
About
Timezone conversion and reminder app for distributed teams that need fast city comparisons and cross-zone scheduling.
Problem
Daily utility apps must surface critical information quickly, reliably, and with low-friction repeated usage.
Solution
Delivered a Flutter-first mobile stack with reusable modules, API integration, state management, and release workflows.
Outcome
Production release completed across Google Play.
My Role
Designed and delivered a native Android utility with offline timezone lookup, alarms, reminders, and analytics hooks.
Core Capabilities
- City search with instant timezone conversions
- Cross-zone reminders with lead-time controls
- Offline local storage for saved city lookups
- AlarmManager + WorkManager reminder execution
Architecture
- Java Android stack with modern target SDK coverage
- RecyclerView/ViewPager and material dialogs
- SharedPreferences + Gson persistence
- WorkManager and AlarmManager scheduling
Tech Stack
Java RecyclerView ViewPager Material Components SharedPreferences Gson AlarmManager WorkManager Firebase Analytics Firebase Crashlytics Google Mobile Ads