The KeKost application is a bookkeeping application for boarding or rental business owners, guest houses and small-scale accommodation which is equipped with the main function of assisting in monitoring room availability, payment due dates, recording tenant identities, room payments, income and expenditure reports. Kost is offline based or the data is stored on the user's smartphone, so it can be used without an internet network

The main function
1. Tenant data, record check out date, next payment
2. Room data, prices per day to per year
3. Support room type
4. Multi Boarding House Support
5. Room Booking System
6. Cash Flow Transaction Data is more regular
7. Regular Tenant payments
8. Accounts Payable and Receivable Management