Cashbook - Expense Tracker is an Android finance app that offers an extensive range of features for tracking expenses, income, mileage, sales, and receipts. It is a quick and handy way to keep an accurate record of your financial transactions for tax, reimbursement, and bookkeeping purposes. The app also provides a convenient way to track your cash flow, trend, and balance from anywhere and at any time.

The app offers real-time GPS mileage tracking for accurate distance and time, with a timer-only mode for those who prefer not to use GPS. The user-extendable database allows you to add, delete, rename income/expense categories, payer/payee, account, and vehicle information. You can create multiple accounts for multiple businesses or companies, import data from input CSV files, and duplicate income, expense, and mileage records. The app also offers password protection to keep your financial information secure.