Calculator365: All-In-One Calc 4+

All-in-one Calculator with voice, history for the iPhone and iPad.
◉ Advanced & Smart Calculator+
▸ Basic Calculator (+, -, x, ÷, %, (), ...)
▸ Scientific Calculator (e, pi, π, x!, Sin, Cos, Ln, ^, √, log, Sin⁻¹, Cos⁻¹, …)
▸ Calculation history (Show or hide)
▸ Visual input (Backspace key)
▸ Voice output (English, Spanish, Chinese, Japanese, Korean, ...)
▸ Modify expressions in real time
▸ Calculator Widget (for iOS 17.0+)

◉ Fraction Calculator
▸ Quickly calculate fraction addition, subtraction, multiplication, and division. convert between fractions and decimals.
▸ Get detailed, step-by-step solutions for every calculation.

◉ Percentage Calculator
▸ Easily calculate the percentage increase or decrease between numbers.
▸ Calculate what percentage one number is of another.

◉ Unit Converter
▸ Supports length, area, volume, speed, pressure, power, weight, temperature, energy, time, angle, density, force, torque, and the data capacity.

◉ Currency Converter
▸ Calculate currency exchange rate conversions, including dollar, euro, yen, yuan, etc.

◉ Loan Calculator
▸ Calculate total interest, total payment based on loan principal and interest rate.
▸ Calculate monthly payments after early repayment or interest rate changes.

◉ Date Calculator
▸ Flexibly calculate the interval of a specific date or anniversary with accuracy to the month, week, day, hour, minute, and second.

◉ BMI Calculator
▸ Measure the body mass index (BMI), the basal metabolic rate (BMR), and body fat percentage (BFP).
▸ Save the result to track your health changes over time.

◉ Ovulation Calculator
• Calculates the time of ovulation and fertility using the menstrual cycle.

◉ Hex Converter
▸ Easily convert numbers between binary, octal, decimal, and hexadecimal systems.

◉ Savings Calculator
▸ Enter the deposit amount, interest rate and term and interest and final savings balance will be calculated.

◉ Income Tax Calculator
▸ Enter your pre-tax salary, additional deductions, and payment periods to calculate your final after-tax salary, personal income tax, medical insurance premiums, etc.

◉ Relatives Calculator
▸ Easily learn the names of Chinese relatives.

◉ Chinese financial capitalization
▸ Enter the amount number, and the Chinese financial text corresponding to the amount can be generated.

◉ OTHER FEATURES
▸ Portrait and landscape modes both available.
▸ Support Multitasking (iPad).
▸ Multiple skin themes.
▸ Keyboard vibration & Sound.
▸ Thousands separator.
▸ Adjustable number of decimal places.

More features are being developed~ Please Come to download, just enjoy it ^_^

VIP Membership:
Payment: After the user confirms the purchase, the payment will be deducted from the iTunes account.
Subscription: iTunes account will be automatically charged within 24 hours before the expiration date, and the subscription period will be extended accordingly after successful payment. To cancel the renewal, please manually disable the auto-renewal feature in iTunes/Apple ID settings at least 24 hours before the current subscription expires.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula

Disclaimer:
The developer provides this application without any warranties regarding the accuracy, reliability, or suitability of its calculations or information. The developer is not liable for any direct or indirect damages resulting from the use of this application's calculations or information.