Cash Book: Sales Expense App by Khatabook is a free and simple cash management and bookkeeping app designed for various businesses. It allows users to effortlessly track daily income, sales, expenses, credit and debit entries, and overall day-to-day transactions. The app automatically computes and displays daily balances and cash in hand, requiring users only to input income and expense entries regularly.

In addition to monitoring sales, expenses, and managing transactions, Cash Book offers the functionality to download PDF reports containing all entries and day-wise summaries. Users can easily track their net balance over any desired duration with this convenient app.