A free program for Android, by omar1985.

Installment and Accounting is a mobile application that helps you manage and track the installment and accounting process. With this app, you can easily record all the information about the transactions, as well as the amount of money that was lent. Moreover, you can easily keep track of the payments made by the customers, and can even calculate the profits earned by the investors. This is a very useful app for those who want to start their own business in the realm of finance.

The app is extremely easy to use, and is very user-friendly. So, you don't need to have any prior knowledge in order to use it.