Habit Streak Daily

HabitStreak implements evidence-based habit-tracking principles with a clean SwiftUI interface designed for iOS 16 and above. CORE MECHANICS • Streak Engine: calculates current streak by walking back consecutive completed days from today; resets on any missed day • Best Streak: all-time record of the longest unbroken consecutive sequence per habit • Completion Rate: 7-day and 30-day rolling window ratios displayed per habit and aggregated HABIT CONFIGURATION | Parameter | Options | |-------------|----------------------------------| | Frequency | Daily / Weekdays / Weekly | | Icon | 10 SF Symbols (drop, book, flame…)| | Color | 7 preset hex colors | | Name | Free-text, any length | STATISTICS MODULE • Overview dashboard: total habit count, today's completions, 7-day aggregate success rate • Per-habit detail: current streak, best streak, 14-day tile visualization, 30-day completion count DATA LAYER • Persistence: UserDefaults with JSON encoding (Codable structs) • No network calls — fully offline • No account, no analytics, no third-party SDKs INTERFACE • SwiftUI-native, supports Dynamic Type • System-aware Light/Dark theme • Localized in English and Simplified Chinese • Tab navigation: Habits / Stats / Settings PRIVACY Zero data leaves the device. Deletion of the app permanently removes all habit data.