App widget for daily monitoring of cash expenses.

Features:
  * Accounting for cash up to a penny;
  * Simple interface for input costs;
  * Separation of the main categories of expenditure;
  * Ability to view a list of all the recognized costs;
  * Widget for home screen to display the flow for the current day, week, month;
  * Ability to enter comments to the costs (by pressing the typed amount);
  * Does not require any additional permits to install and operate;
  * Open source: https://github.com/Sash0k/Thrift-box