모든계산기 CalHub - 물타기·평단가·대출이자
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All Calculator CalHub - Averaging, Average Price, Loan Interest
24 types of calculators in one app. Calculate average price, loan interest, savings/deposits, exchange rates, and VAT instantly using a floating calculator that displays over other apps.
🧮 All the calculators you need, in one app. All 24 types of calculators.
Averaging price, loan interest, savings/deposits, exchange rates, VAT, and even unit conversions.
You no longer have to wander around searching for an app every time you need to do a calculation.
All Calculator CalHub brings together 23 types of financial, lifestyle, and engineering calculators into one,
and calculates instantly without switching screens using a floating widget that displays over other apps.
■ Loan & Deposit Interest Calculator
▶ Loan Calculator — Equal principal and interest, equal principal, lump-sum repayment at maturity + grace period, repayment schedule by installment
· Interest rate support by tier: Actual product values such as "1-year grace period, 1.7% special rate for 3 years, and market rates for the remainder"
▶ Deposit Calculator — Interest at maturity and net payout after tax when depositing a lump sum (Deposit Interest Calculator)
▶ Installment Savings Calculator — Amount at maturity and net interest after tax based on monthly deposits (Installment Interest Calculator)
▶ Car Loan Calculator — Total purchase cost including vehicle price, down payment, monthly installments, and acquisition tax
■ Stock & Coin Averaging Down
▶ Averaging Down Calculator — New average purchase price (average price) and break-even recovery rate upon additional purchase
▶ Multiple Averaging Down Calculator — Split purchase scenarios for up to 30 installments, categorized by round
· Stock & Coin Average Price Calculation. Coin quantities with 8 decimal places displayed without error
■ Financial Life
▶ Currency Calculator — Convert between 15 currencies using real-time exchange rates (USD, JPY, EUR exchange rate conversion)
▶ VAT Calculator — Supply price ⇄ Total amount including VAT, both directions
▶ Discount Calculator — Calculate discounted prices and savings accurately, including double discounts
▶ Unit Price Comparison Calculator — Determine which of two products with different capacities is more advantageous
▶ Wage Calculator — Converts hourly, daily, monthly, and annual wages; calculates weekly holiday allowance, overtime allowance, and net pay
▶ Fuel Efficiency Calculator — Calculates fuel efficiency, fuel costs, and driving range
▶ Net Annual Salary Calculator — Calculates the actual monthly salary after deducting the four major insurances and income tax (Simplified Tax Table); reflects deductions for dependents and children; includes the employer's share of the cost (Annual Salary Calculator)
■ Date, Time, and Unit Conversion
▶ Date Calculator — D-day, dates a few days later or earlier
▶ Time Calculator — Calculates time differences and adds time based on working hours
▶ Unit Converter — Length · Weight · Area · Volume · Temperature · Data (Pyeong ↔ m² Pyeong calculation, includes 1 Don of Gold)
■ General · Engineering
▶ General Calculator — Basic arithmetic operations and percentages on a large keypad
▶ Engineering Calculator — Trigonometric functions, logarithms, square roots, powers, and factorials
▶ Percentage Calculator — Percentages, ratios, and growth rates
▶ Fraction Calculator — Reduced fractions, mixed numbers, and decimals with a dedicated fraction keypad, including full solution steps
▶ GPA Calculator — GPA (4.5/4.3/4.0) and reverse calculation of target GPA
▶ Number System Converter — Interconversion between binary, octal, decimal, and hexadecimal
▶ Prime Factorization Calculator — Prime factorization, count, sum, and list of factors
■ Health
▶ BMI Calculator — BMI, obesity stage, and standard weight (based on the Korean Society for the Study of Obesity)
■ Platform Features
▶ Floating Widget (Android) — Displays 22 types of calculators on top of other apps
· Place a translucent calculator over your stock, banking, or shopping apps and calculate instantly.
· Freely arrange by dragging, adjust size with pinch.
· Values entered in the widget carry over when you return to the app.
▶ Calculation History Drawer — Each calculator has its own separate drawer. Label and save them, compare them side-by-side, and recall to continue calculations.
▶ Easy-to-Find Home — Initial consonant search (e.g., ㅁㅌㄱ → 물다기), Favorites, Recent Uses
▶ Currency Support — 5 types: KRW (₩), USD ($), JPY (¥), YUNK (CN¥), and EUR (€). If you select a foreign currency, the Korean Won equivalent is displayed alongside it at the real-time exchange rate.
■ This is when you use this calculator:
· Calculate how much more you need to buy to reach your average purchase price when you are stuck with a stock.
· When you need loan interest, monthly repayments, and a 30-year equal principal and interest repayment table.
· Calculate your actual payout after taxes at the maturity of a savings account.
· Calculate your net pay and weekly holiday allowance from your monthly or annual salary.
· Convert an amount including VAT back to the supply price.
· Check dollar exchange rates for overseas direct purchases, compare prices at supermarkets, calculate area, and count down the days.
■ What makes this app different from other calculators:
✓ Error-free precise calculation — It performs only decimal and rational number operations without using floating-point numbers. It calculates coin quantities with 8-digit decimal places and 30-year loan repayment tables without error. Loan repayment amounts match bank repayment tables down to the Won unit.
✓ No server — All calculations and records are stored only on your device. There is no membership registration or collection of personal information.
** ✓ Easy-to-Read Screen — Dark default with customizable accent, background, and text colors. Increasing the font size also expands the columns and margins.
■ Permissions Guide
· Display over other apps: Used only for floating widgets (Optional — the app works normally even if denied)
· Internet: Used only for currency exchange checks and displaying advertisements
For every moment you need numbers, CalHub, your all-calculator. 📊
※ This app is a calculation tool and is not an investment recommendation or advice. The user is solely responsible for investment decisions and liabilities.
※ BMI calculation results are for reference only and do not constitute a medical diagnosis.
24 types of calculators in one app. Calculate average price, loan interest, savings/deposits, exchange rates, and VAT instantly using a floating calculator that displays over other apps.
🧮 All the calculators you need, in one app. All 24 types of calculators.
Averaging price, loan interest, savings/deposits, exchange rates, VAT, and even unit conversions.
You no longer have to wander around searching for an app every time you need to do a calculation.
All Calculator CalHub brings together 23 types of financial, lifestyle, and engineering calculators into one,
and calculates instantly without switching screens using a floating widget that displays over other apps.
■ Loan & Deposit Interest Calculator
▶ Loan Calculator — Equal principal and interest, equal principal, lump-sum repayment at maturity + grace period, repayment schedule by installment
· Interest rate support by tier: Actual product values such as "1-year grace period, 1.7% special rate for 3 years, and market rates for the remainder"
▶ Deposit Calculator — Interest at maturity and net payout after tax when depositing a lump sum (Deposit Interest Calculator)
▶ Installment Savings Calculator — Amount at maturity and net interest after tax based on monthly deposits (Installment Interest Calculator)
▶ Car Loan Calculator — Total purchase cost including vehicle price, down payment, monthly installments, and acquisition tax
■ Stock & Coin Averaging Down
▶ Averaging Down Calculator — New average purchase price (average price) and break-even recovery rate upon additional purchase
▶ Multiple Averaging Down Calculator — Split purchase scenarios for up to 30 installments, categorized by round
· Stock & Coin Average Price Calculation. Coin quantities with 8 decimal places displayed without error
■ Financial Life
▶ Currency Calculator — Convert between 15 currencies using real-time exchange rates (USD, JPY, EUR exchange rate conversion)
▶ VAT Calculator — Supply price ⇄ Total amount including VAT, both directions
▶ Discount Calculator — Calculate discounted prices and savings accurately, including double discounts
▶ Unit Price Comparison Calculator — Determine which of two products with different capacities is more advantageous
▶ Wage Calculator — Converts hourly, daily, monthly, and annual wages; calculates weekly holiday allowance, overtime allowance, and net pay
▶ Fuel Efficiency Calculator — Calculates fuel efficiency, fuel costs, and driving range
▶ Net Annual Salary Calculator — Calculates the actual monthly salary after deducting the four major insurances and income tax (Simplified Tax Table); reflects deductions for dependents and children; includes the employer's share of the cost (Annual Salary Calculator)
■ Date, Time, and Unit Conversion
▶ Date Calculator — D-day, dates a few days later or earlier
▶ Time Calculator — Calculates time differences and adds time based on working hours
▶ Unit Converter — Length · Weight · Area · Volume · Temperature · Data (Pyeong ↔ m² Pyeong calculation, includes 1 Don of Gold)
■ General · Engineering
▶ General Calculator — Basic arithmetic operations and percentages on a large keypad
▶ Engineering Calculator — Trigonometric functions, logarithms, square roots, powers, and factorials
▶ Percentage Calculator — Percentages, ratios, and growth rates
▶ Fraction Calculator — Reduced fractions, mixed numbers, and decimals with a dedicated fraction keypad, including full solution steps
▶ GPA Calculator — GPA (4.5/4.3/4.0) and reverse calculation of target GPA
▶ Number System Converter — Interconversion between binary, octal, decimal, and hexadecimal
▶ Prime Factorization Calculator — Prime factorization, count, sum, and list of factors
■ Health
▶ BMI Calculator — BMI, obesity stage, and standard weight (based on the Korean Society for the Study of Obesity)
■ Platform Features
▶ Floating Widget (Android) — Displays 22 types of calculators on top of other apps
· Place a translucent calculator over your stock, banking, or shopping apps and calculate instantly.
· Freely arrange by dragging, adjust size with pinch.
· Values entered in the widget carry over when you return to the app.
▶ Calculation History Drawer — Each calculator has its own separate drawer. Label and save them, compare them side-by-side, and recall to continue calculations.
▶ Easy-to-Find Home — Initial consonant search (e.g., ㅁㅌㄱ → 물다기), Favorites, Recent Uses
▶ Currency Support — 5 types: KRW (₩), USD ($), JPY (¥), YUNK (CN¥), and EUR (€). If you select a foreign currency, the Korean Won equivalent is displayed alongside it at the real-time exchange rate.
■ This is when you use this calculator:
· Calculate how much more you need to buy to reach your average purchase price when you are stuck with a stock.
· When you need loan interest, monthly repayments, and a 30-year equal principal and interest repayment table.
· Calculate your actual payout after taxes at the maturity of a savings account.
· Calculate your net pay and weekly holiday allowance from your monthly or annual salary.
· Convert an amount including VAT back to the supply price.
· Check dollar exchange rates for overseas direct purchases, compare prices at supermarkets, calculate area, and count down the days.
■ What makes this app different from other calculators:
✓ Error-free precise calculation — It performs only decimal and rational number operations without using floating-point numbers. It calculates coin quantities with 8-digit decimal places and 30-year loan repayment tables without error. Loan repayment amounts match bank repayment tables down to the Won unit.
✓ No server — All calculations and records are stored only on your device. There is no membership registration or collection of personal information.
** ✓ Easy-to-Read Screen — Dark default with customizable accent, background, and text colors. Increasing the font size also expands the columns and margins.
■ Permissions Guide
· Display over other apps: Used only for floating widgets (Optional — the app works normally even if denied)
· Internet: Used only for currency exchange checks and displaying advertisements
For every moment you need numbers, CalHub, your all-calculator. 📊
※ This app is a calculation tool and is not an investment recommendation or advice. The user is solely responsible for investment decisions and liabilities.
※ BMI calculation results are for reference only and do not constitute a medical diagnosis.
24 types of calculators in one app. Instantly calculate average purchase price, loan interest, savings/deposits, exchange rates, and VAT with a floating calculator that displays on top of other apps.
Updated on
Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
- No data shared with third partiesLearn more about how developers declare sharing
- No data collectedLearn more about how developers declare collection
What’s new
• 연봉 실수령액 계산기가 추가됐습니다. 연봉이나 월급을 넣으면 4대보험과 세금을 뗀
뒤 매달 통장에 찍히는 금액을 계산합니다. 국세청 간이세액표를 그대로 써서 회사가
실제로 떼는 금액과 같고, 부양 가족 수·자녀 수·비과세액·퇴직금 포함 여부까지
반영합니다. 회사가 함께 내는 부담액도 볼 수 있습니다.
• 오픈 기념으로 내보내기·백업·복원을 포함한 모든 기능을 무료로 열었습니다.
• 서랍 백업 복원은 언제나 무료입니다 — 기록을 되살리는 데는 결제가 필요 없습니다.
• 서랍에 저장한 기록을 하나씩 골라 엑셀·PDF로 내보낼 수 있습니다.
• 결과 화면의 금액이 오른쪽 끝에 맞춰 정렬돼 한눈에 비교하기 쉬워졌습니다.
• 별점을 묻는 안내가 숫자 입력 도중에 뜨던 문제를 고쳤습니다.
뒤 매달 통장에 찍히는 금액을 계산합니다. 국세청 간이세액표를 그대로 써서 회사가
실제로 떼는 금액과 같고, 부양 가족 수·자녀 수·비과세액·퇴직금 포함 여부까지
반영합니다. 회사가 함께 내는 부담액도 볼 수 있습니다.
• 오픈 기념으로 내보내기·백업·복원을 포함한 모든 기능을 무료로 열었습니다.
• 서랍 백업 복원은 언제나 무료입니다 — 기록을 되살리는 데는 결제가 필요 없습니다.
• 서랍에 저장한 기록을 하나씩 골라 엑셀·PDF로 내보낼 수 있습니다.
• 결과 화면의 금액이 오른쪽 끝에 맞춰 정렬돼 한눈에 비교하기 쉬워졌습니다.
• 별점을 묻는 안내가 숫자 입력 도중에 뜨던 문제를 고쳤습니다.
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About the developer
주현욱
jatham1231@gmail.com
황령산로 615
연산롯데캐슬골드포레, 109동 1603호
연제구, 부산광역시 47608
South Korea