Kakeku is an android-based Family Financial Management Calculator application developed by LKK PWNU DIY. It is designed to be simple and easy to use, even for the most novice users, to manage family finances. With Kakeku, you can perform financial analysis and planning independently, as it comes equipped with a holistic financial analysis tool that touches on the fundamental aspects of your family finances. You can also use Kakeku as a tool to mitigate family financial disasters. Kakeku consists of three main menus: Family Financial Calculator, Family Financial Calculation, and Special Fund Calculation. Each menu has its own sub-menus to help you perform various financial calculations.

The Family Financial Calculator (K3) consists of three sub-menus: Inflation Calculator, Investment Results Calculator, and Investment Needs Calculator. These sub-menus are not interconnected, so you can choose to use any of them according to your needs. On the other hand, Family Financial Calculation (MKK) has three interconnected sub-menus: Personal Information, Family Financial Health Check, and Financial Planning. Lastly, Special Fund Calculation (MDK) has five sub-menu calculators for Education, Retirement, Worship, Vacation, and Home funds. For technical instructions on how to use the Kakeku calculator, please refer to the user manual.