A free program for Android, by SilverHooks Technologies.

Cash Book – Ledger Book is a handy tool for maintaining customer-wise/personal tracking data for various shops and businesses. This app has the advantage of being digitalized, which makes it convenient to use, as you can access your data anytime, anywhere, and you can share it easily with others.

This app can be used to track a restaurant, grocery store, or any type of shop and business, and can be used to track the transactions and loans of a particular customer or shop owner.

You can record all the details of a customer and track the history of all the transactions, and generate reports of a particular customer or shop owner. You can also set a security question and a password, and the data will be stored in your Google Drive.