You don't have to search every time you need to.
We have gathered 21 frequently used calculators—covering taxes, salary, loans, and living expenses—in one app.
■ Salary & Labor
· Net Annual Salary Calculator — Net monthly pay after deducting the four major insurances and income tax
· Severance Pay Calculator — Estimated severance pay based on average wages
· Hourly Wage & Weekly Holiday Allowance Calculator — Weekly and monthly wages based on the 2026 minimum hourly wage
■ Taxes
· Year-End Tax Settlement Calculator — Check in advance whether a refund or additional payment is required
· VAT Calculator — Two-way calculation between supply price and total amount
· Capital Gains Tax Calculator — Reflects tax exemption for one-household, one-home ownership and special deduction for long-term ownership
· Used Car Registration Tax Calculator — Acquisition tax and public bond purchase costs
· Automobile Tax Calculator — Annual tax amount based on engine displacement and vehicle age, annual payment discount
■ Finance & Investment
· Loan Interest Calculator — Comparison of equal principal and interest, equal principal, and lump-sum repayment at maturity
· Installment & Deposit Interest Calculator — After-tax payout at maturity
· Stock Yield Calculator — Realized profit/loss after deducting fees and transaction taxes, price per pyeong, and target price
■ Real Estate & Living Expenses
· Pyeong Converter — Two-way between square meters and pyeong Conversion
· Electricity Bill Calculator — Rates by progressive tiers and expanded tiers for summer
· Shipping Fees & Delivery Tracking — Size determination, rate comparison, invoice lookup
■ Dates & Health
· Age Calculator — Age in years, calendar age, traditional Korean age
· D-Day Calculator — Remaining days, date intervals, date addition
· BMI & Calorie Calculator — Body Mass Index and daily calorie requirements
■ Utilities
· Unit Converter — 7 classifications including length, weight, temperature, etc.
· Character Count — Character count including/excluding spaces and bytes
· QR Code Generator — Address, Wi-Fi, contacts
· Lotto Number Generator — Specify inclusion/exclusion numbers
▶ Suitable for:
· Office workers who want to verify their actual salary before changing jobs
· Self-employed individuals and freelancers who need to add VAT to their quotes
· Those looking to compare loan repayment amounts with total interest
· Those wondering why their electricity bill came out this way
· Job seekers who need to meet the character count for their cover letters
▶ Features of this App
· No internet connection required It works. All calculations are processed on the device.
· Entered amounts and personal information are not stored or transmitted to a server.
· No registration is required. You can install and use it immediately.
· You can quickly find 21 calculators using search and categories.
· It displays the calculation process item by item. It does not just display the result number.
· For loans and installments, it provides repayment and deposit schedules by installment in a table format.
21 types of lifestyle calculators in one place, from net annual salary to VAT, loan interest, and electricity bills