Create and send professional invoices with customizable templates. Track payments and manage client details. Set recurring billing schedules and export reports in various formats. Apply security measures to protect sensitive data.
Perform calculations for generators and UPS systems, including single and three-phase setups. Convert lumens to watts and calculate fuel consumption. Determine ampere values from kilowatts and kilovolt-amps.
Emulates HP 15C RPN functionality with precise mathematical calculations. Users can solve equations, perform numerical integration, handle complex numbers, and execute matrix operations. It supports root finding and hyperbolic functions.
