Huan Utilities

This app is a comprehensive utility toolkit designed to simplify daily planning, budgeting, financial calculations, and important date tracking. It combines expense management, a lunar calendar, currency conversion, and essential financial calculators within a clean, structured, and user-friendly interface. All data is securely stored within the app, allowing users to review and manage information efficiently across sessions.

The Daily Expense feature provides a complete budgeting system. Users can record expenses and instantly view their daily budget, total spent, and remaining balance with clear progress indicators. A monthly breakdown displays daily spending, budget status, total monthly budget, and total spent, with automatically calculated daily targets based on the set monthly budget. Visual progress bars make tracking simple and intuitive. A yearly overview graph highlights monthly performance trends, helping users identify patterns and control spending. A built-in search function enables quick access to specific expenses, and a full-screen view improves clarity when reviewing records.

The Lunar Calendar integrates solar and lunar dates in an easy-to-navigate format. Users can browse months and years smoothly, view highlighted lunar events, and convert between solar and lunar dates instantly. A date calculator shows the number of days between two selected dates. Selecting a date reveals detailed solar and lunar information. Users can create reminders with custom times, notes, and optional yearly repeats. The app displays the remaining days until each event, and when a reminder is due, a red badge notification appears on the app icon to prevent missed dates. A dedicated widget displays both solar and lunar dates directly on the Home Screen for quick reference.

The Currency Converter supports global currency conversion using up-to-date exchange rates, with the option to enter custom rates for precise control. Users can convert between any two currencies, switch direction instantly, and clearly view results for small or large amounts. Converted totals can be displayed in words to reduce confusion with significant figures. Recent exchange rates are saved automatically with timestamps. A Top 15 currencies section offers quick access to commonly used currencies such as USD, GBP, and EUR.

The Percentage Calculator quickly calculates discounts and final prices. By entering a price and percentage, users instantly see the discount amount and final total. Large values can be displayed in words, and recent calculations are saved for convenient reference.

The Salary Calculator supports worldwide income estimation. Users enter salary, working hours, and a custom tax rate to calculate gross and net income across yearly, monthly, weekly, daily, and hourly periods. A comparison view highlights total tax and income distribution. Saved results allow easy review and scenario comparison.

The Mortgage Calculator assists with loan planning. Users input loan amount, deposit, term, interest rate, and optional prepayment penalty to estimate repayments. Results include monthly payment, number of payments, total paid, total interest, and repayment progress. Large amounts can be shown in words, and saved calculations help compare multiple loan scenarios.

Together, these integrated tools provide an organized and reliable solution for budgeting, calendar management, currency conversion, and financial planning—helping users make informed decisions in everyday life.