JuChangXin

JuChangXin is an all-in-one iOS app designed to make personal finance calculations simple, accurate, and fast.

Built around practical everyday scenarios, the app combines individual income tax tools with a powerful utilities toolbox so you can complete key calculations in one place.

Key Features:

• Salary Tax Calculator: Estimate monthly personal income tax from gross salary, social insurance, housing fund, and deductions.
• Annual Bonus Tax Calculator: Calculate tax for one-time annual bonus with clear rate and tax amount output.
• Comprehensive Income Calculator: Estimate annual tax based on 12-month income and deductions.
• Tax Rate Lookup: Quick access to tax brackets and quick deduction values.
• Tax History: Review previous tax calculation records.

Finance & Utility Toolkit:

• Loan Calculator: Equal principal-and-interest and equal principal repayment modes.
• Investment Calculator: Compound and simple interest return estimation.
• Social Insurance & Housing Fund: City-based contribution estimation.
• Currency Converter: Convert across major currencies for quick reference.
• Unit Converter: Length, weight, area, and volume conversions.
• Date Calculator: Date difference, date addition/subtraction, and weekday calculations.
• Basic Calculator: Fast daily arithmetic operations.

Why you will like it:

• Clean, easy-to-use interface
• Results displayed clearly and instantly
• Multiple practical tools in one app
• Designed for real-world personal finance workflows

Important Notes:

• Tax and contribution results are estimates for reference only.
• Currency rates are for reference and may differ from real-time bank/exchange rates.
• Please refer to official tax authority or professional advisors for final filing decisions.