생활박스 - 일상에 필요한 계산기

Life Box is an app that brings together 45 frequently used everyday tools into one.

No login is required, and all data is stored exclusively on your device without a server.

[ Financial Calculations ]

- Exchange Rate Calculator: Convert foreign currency using real-time exchange rates

- Net Annual Salary: Automatic calculation of 4 major insurance premiums and income tax (based on 2026 figures)

- Loan Calculator: Equal principal and interest repayment / Equal principal repayment

- Jeonse Loan Calculator: Available loan amount, monthly interest, total burden

- Vehicle Installment Calculator: Monthly payment reflecting subsidies and estimated acquisition tax

(Acquisition tax reduction for EVs reflected)

- Installment Savings Calculator: Simple interest, compound interest, general taxation, tax-exempt

- ISA Calculator: Comparison of tax benefits between general and low-income types

- Severance Pay Calculator: Based on average monthly salary and years of service

- Annual Leave Calculator: Annual leave days based on the Labor Standards Act

- Housing Subscription Point Calculator: Points for non-homeownership, dependents, and savings accounts (maximum 84 points)

- Real Estate Acquisition Tax Calculator: Automatic application of tax rates by number of homes and region

- VAT Calculator: Calculation of supply price, VAT separate / included

- Fixed Expense Management: Monthly expenses at a glance

[ Calculation Tools ] ]

- Calculator

- Pyeong Conversion: Interconversion between Pyeong and square meters (m²)

- Unit Conversion: Length (cm, in, ft, m) / Weight (kg, lb, oz) / Temperature (C, F, K)

- Shoe Size Conversion: Simultaneous display of KR (mm), US, EU, UK, and JP

- Discount Calculator: Actual price based on regular price and discount rate

- Regular Price Calculator: Calculate original price based on discounted price and discount rate

- Percentage Calculator: B% of A / Ratio / Growth/Decrease Rate

- BMI Calculator: Body Mass Index based on Asian standards

- Split Payment Calculator: Includes rounding up and down for 100 won

- International Age Calculator: International age / Counting age / Legal international age

- Date Calculator: Add or subtract days from a reference date

- Lotto Number Generator: Generates up to 10 random numbers

[ Daily Tools ]

- Notepad: Quick note-taking

- Diary: Write and save diary entries by date

- Checklist: Manage tasks by categorizing them into lists

- D-Day Counter: Number of days remaining until an important date

- Timer: Countdown timer

- Schedule Management: Record schedules by date

- Car Maintenance Management: Record fuel, insurance, and maintenance expenses

- Travel Checklist: Organize items to pack before departure

- Account Number Collection: Save frequently used accounts and copy them all at once

- Menstrual Cycle: Record cycle duration and next due date notifications

- Roulette: Spin the wheel to determine menu, order, and duty

[ Convenience Tools ]

- QR Scanner: Instantly scan QR codes with the camera

- Wi-Fi QR: Create a QR code for connecting to your home Wi-Fi

- English Address Converter: Link with Kakao Zip Code, copy street name, district, and city separately

- Password Generator: Set length and special character options

- Noise Meter: Measure ambient noise (dB) in real-time using a microphone

- Screen Ruler (Tape Measure): Use the screen as a tape measure to measure lengths

- Level: Use the device as a level

- Protractor: Measure inclination as an angle, select horizontal / vertical reference

[ Convenience Settings ]

- Favorites: Pin frequently used tools to the home screen
- Dark Mode / Light Mode / System Auto - Large Font Mode: Text size enlarged by 1.2x