Salva em uma planilha, as chamadas efetuadas.
If
Any outgoing phone call ends
This Trigger fires every time you place a phone call on your Android device.
Then
Add row to spreadsheet
This action will add a single row to the bottom of the first worksheet of a spreadsheet you specify. Note: a new spreadsheet is created after 2000 rows.
Explore more great ways to automate Google Sheets and Android Phone Call