This web app lets you see how many hours you spend on a Google Calendar. It uses the Google Calendar API to fetch your calendars and events, crunches the data and displays it nicely. You can filter by day, week, month, year, total or add a custom time range.
You need to authorize the app with the following link:
This app connects to the Google Calendar API to fetch your calendars and events, so that it can calculate the hours. This connection happens directly from your browser to the Google API. There are no server or services involved that might cache the data.
None of the data fetched from the Google Calendar API is saved elsewhere but in your browser. After you close the browser window/tab all authentication data is delete (technical detail: sessionStorage is used). Thats why you need to reauthorize with Google the next time you visit the page.
This app only has read-only access to your calendar data.