Update for Android 10.
Expenses or income are quickly entered and assigned to classes, categories and subcategories. Monthly or yearly totals and subtotals can be viewed and graphically compared, with budgets on class or category level. Currencies are converted. Split items and recurring transactions can be defined. Import and export of CSV and QIF files.
This app was developed for sophisticated users that need more than the basic features most other apps offer. Using classes when assigning to categories gives another dimension for controlling your expenses. So you may separate personal from business, or multiple persons.