MySchedule: Calendar and Timer is an advanced mobile organizer designed according to the Offline-First principle. The application combines the capabilities of interactive planning, decentralized data exchange and time management, targeting students, freelancers and professionals with complex work schedules. The product has successfully surpassed 1,000+ downloads on Google Play.

🎯 Main business logic and features:

• Cyclic shift builder:Flexible scheduling with native support alternating even/odd weeks, complex work cycles and the ability to quickly copy task templates.
• Custom UI: Design and integration of your own optimized CalendarView and WeekViewWidget for displaying a grid of classes without frame drops.
• Contactless P2P exchange (QR Sharing): A unique function of instant sharing of a schedule between devices in one click. Users can generate and read QR codes locally, without the need for servers or the Internet.
• Built-in Focus Timer (Pomodoro Engine):Interactive interactive countdown timer that helps you efficiently manage work intervals and combat procrastination.

🛠️ Technical features and optimization:

• Full offline mode (Offline-First):The database architecture is designed based on isolated local SQLite storage and library Room, providing interface rendering faster than 10 ms.
• Development of a custom graphics engine: Rendering time cells in the CalendarView and WeekViewWidget widgets is done without the use of heavy third-party libraries, guaranteeing stable 60 FPS on any device.
• Decentralized data serialization:A fault-tolerant layer has been created for converting SQLite relational relationships into compact encrypted JSON strings, optimized for instant reading by embedded QR scanner.
• DBMS local integrity: Strict atomicity of database transactions is implemented, protecting user files from damage during a sudden background power outage.