Lotto Sago Sipeunnal

Overview

A lotto utility for generating numbers, saving sets, checking results, and reviewing winning-store data.

Product purpose

Help users prepare, store, and review lotto number sets with result data and purchase-context utilities in one mobile flow.

Target user

Users who regularly prepare lotto combinations and want saved sets, result checks, reminders, and store context without jumping between tools.

Role and ownership

Product planning, UI implementation, architecture decisions, and app delivery.

Main features

• - Random and manual number generation
• - Saved number-set management
• - Draw result lookup and local history sync
• - QR scan and scan history
• - Winning-store ranking and map handoff
• - Notification reminders and ad-free purchase flow

Technical notes

• - Flutter app using Riverpod for state management
• - Hive-backed local boxes for sets, results, scan history, and store data
• - Lotto result parsing from multiple sources with fallback logic
• - Geolocator, mobile scanner, local notifications, ads, and in-app purchase integrations

Future improvements

• - Include Korea in the launch countries (currently excluded due to app rating constraints)
• - More personalized number filters
• - Richer saved-set statistics
• - Expanded purchase timing insights