Calculation Task#4

[krapivani]

Save data after execution of application.

[krapivani]

Task Test:

1. Open App.
2. Create pin and Login.
3. Navigate to spending history page.
4. Add some data as spent history.
5. Close the application.
6. Open application again and navigate to graph page.
7. Check if the data you entered before is plotted on graph.