RentBook - Landlord Ledger

LandlordLedger - A local accounting tool designed for individual landlords managing 1-20 rental units. Feature Matrix: Property Management - Record community/unit/monthly rent/deposit/contract dates - Real-time vacant/occupied status indicators - Support for additional notes Tenant Management - Tenant name, phone number, ID number - Move-in dates and move-out records - One-tap property association Rent Accounting - Three states: Unpaid / Paid / Partial Payment - Auto-generated monthly bills - Historical records grouped by month Utility Settlement - Enter previous/current meter readings - Custom unit prices (water/electricity/gas) - Auto-calculation: Usage x Unit Price = Amount Due Due Reminders - Auto push notifications before rent due date - 7-day early warning for contract expiry - One-tap completion marking in reminder list Data Statistics - Monthly totals: receivable/received/outstanding - Collection progress visualization - Vacancy rate at a glance Data Security - 100% local storage, no internet required - One-tap JSON export for backup - Import to restore all data when switching phones Technical Highlights: - Core Data local persistence - Zero network dependency, fully offline - iPhone-only, focused portrait experience