Your money. Your Data. Your Device.

Track income and expenses, plan budgets, analyze and forecast without giving up control of your data.

SimBook is an offline income and expense tracker and budget planner with encrypted local storage, professional analytics, and no account sign-up / sign-in required.

SimBook helps you record income, track spending, manage budgets, and understand where your money is going. Use it as a simple money manager and spending tracker for everyday personal finance, whether you are reviewing this expenses, checking your budget, or looking back across years.

Private by design

SimBook is built as a fully local finance app. Your financial records are stored on your device in encrypted local storage. The app does not require registration, does not host your data on a server, and does not upload your data for any analysis or ads.

No user account. No cloud sync. No transaction data uploaded, sold, or shared.

SimBook works fully offline for everyday expense tracking and budget planning. Internet access is only needed for optional features of exchange-rate lookup, Google Play purchase, or purchase restoration.

Professional analytics for better decisions

Developed by a professional financial data analyst, SimBook’s advanced analytics enables you to review your income and expense data from a clearer, more practical point of view.

Use charts to analyze income and spending patterns, compare actual spending with budgets, and forecast future income and expenses using professional methods. Forecasts are estimates based on your local history, helping you plan ahead without sending your data elsewhere.

Key features

- Income and expense entry
- Recurring income, bills, and subscription records
- Income or spending category customization
- Weekly, monthly, and yearly spending summaries
- Budget planner with remaining amount and usage view
- Data analytics with charts
- Forecasting future income and spending
- Data export and import as a file
- Offline finance app with encrypted local data
- Exchange-rate lookup when online

SimBook keeps money tracking calm, private, and useful: enter what happened, see what changed, and plan what comes next.