Krono: Shift Work Calendar

Krono is the ultimate app for shift workers and professionals with rotating schedules: healthcare staff (doctors, nurses, attendants), law enforcement & emergency services (police, firefighters, security), industrial workers, and 24/7 transport operators. Organize your work life, track your hours, and balance your personal time effortlessly with this clean, visual, and automated schedule tracker. 🌟 KEY FEATURES: ⚙️ CYCLIC PATTERNS & AUTOMATIC ROTATIONS • Apply predefined shift sequences in a single tap: Continental, DuPont, 2-2-3, 4-on/4-off, 5x2, 6x2, or build your custom cycle with any combination of work and rest days. • Automatic infinite projection: set your initial anchor date and Krono projects your shifts seamlessly into both the future and the past. • Individual exceptions: easily swap or modify single days without breaking your overall rotation pattern. 📅 ADVANCED DATE-RANGE ASSIGNMENT • Single Shift: Apply the same shift to any custom block of days using quick-access shortcuts (7, 14, or 30 days, month-end, 3 months) or a free date picker. Ideal for vacations or sick leaves. • Bounded Rotating Sequence: Assign a temporary rotation pattern restricted strictly to a specific date interval without overwriting your perpetual roster. 🏷️ SHIFT LIBRARY & DUAL SHIFTS • Fully customizable catalog: configure shift names, short codes, start/end times, calculated hours, work-hour rules, and colors with a custom opacity slider. • Dual Shifts & On-Call Support: easily add a secondary backup shift or a complementary on-call duty to any day. 🎨 VISUAL PERSONALIZATION & VIP PERKS • 360° VIP Color Wheel & HEX Codes: enjoy a continuous color picker with precision opacity and brightness adjustments for every shift. • 3 Calendar Layout Styles: choose between Modern (smooth rounded cards), Classic (traditional defined borders), or Minimalist (clean monthly agenda view). • Cell Visibility Control: toggle what to display on your calendar grid (shift codes, second shift pills, times, daily notes, and holidays). • Dynamic Themes: full compatibility with Material You (Android 12+) matching your wallpaper, alongside dark AMOLED, Forest, Sunset, Indigo, and Crimson themes. • 5 Interchangeable VIP App Icons to personalize your home screen. ⏰ SMART ALARM CLOCKS & REMINDERS • Pre-shift Alarms: set custom wake-up triggers linked directly to your shift entry times (exactly on time, 15m, 30m, 1h, or 2h before). • Standalone Reminders: program separate alerts with multiple snooze repetitions and highly adjustable time intervals. 📊 LIVE STATISTICS & AGENDA VIEW • Real-time work counters: track total hours worked, full shifts, days off, night hours, and overtime on the fly. • Monthly & Annual overviews with crystal-clear charts breaking down your schedule distribution. 📄 EXPORT TO PDF & ICALENDAR (.ICS) • Print-ready A4 PDF: export your rosters monthly (1 month per page) or in a compact format (2 months per page) to share via WhatsApp or email. • Universal iCalendar (.ics) export: sync directly with your phone's native calendar, Google Calendar, Outlook, or Apple Calendar. • Official Public Holidays: download and overlay national and regional official holidays. 📱 4 HOME SCREEN WIDGETS • 4 Custom Widgets: Monthly Calendar View, Upcoming Shifts Agenda, Shift of the Day, and Monthly Summary. • 3 Unified Quick-Access Buttons: uniform shortcuts on all widgets to view Weather/Climate, Alarms/Clock, and the Annual Calendar view. • Free Resizing: fully responsive dimensions (3x3, 4x3, 4x4, 4x5, or full screen) matching any Android launcher. • Automatic background refreshes to update your layout instantly upon any schedule changes. 🔒 ABSOLUTE PRIVACY & 100% CLEAN • No invasive ads for any user. • No accounts or mandatory sign-ups: all databases reside locally inside your device (Room/SQLite storage). • Complete local backups using standard JSON formats.