Purchase and Sales Book is a free Android app developed by SR Group, designed to help small-business owners track their daily sales and purchase entries. It provides special journals/books to manage entries such as Sale to customer, Purchase from vendor, Return to vendor, Return to customer, Stock Adjustment, Add income-expense and manage investments.

One of the app's most significant features is the ability to record and manage all transactions, including sales, purchases, returns, and edits of existing transactions. The app allows users to view reports on daily, weekly, monthly, yearly, and custom dates, as well as export reports in Excel and receipt formats. Moreover, with the help of the barcode scanner tool, users can scan products and manage their customers, products, vendors, and investors.

The app also provides various reports such as Sales, Purchase, Stock report, Investor Ledger, Expense & Income states, and Cash balance. It offers a drive backup to restore your data and view day, week, month, year, or any custom date range reports. With Purchase and Sales Book, small-business owners can efficiently manage their daily sales and purchase entries, which is the most effective way to track all their business transactions.