Ckassa is a free Android application developed by Billing Systems Ltd. that offers an online payment service for millions of people to pay for goods and services, and even earn money. It is commonly used by taxi drivers, delivery men, couriers, tutors, craftsmen, and anyone who accepts payments for their services. Ckassa offers a plethora of features such as the ability to receive payments for trips paid by bank transfer, get tax status, register income, and send customers a check. It also offers a virtual card, Ckassa LITE, that can be used to withdraw money from the e-wallet without commission. Ckassa allows users to pay for more than 6,000 services, including fines and taxes, cellular communication and internet, shopping, housing and communal services, educational services, and online games. For any inquiries or difficulties with the application, users can contact the 24/7 tech support chat for assistance.