Great for time tracking, works the best with Chrome extension plus Android app.
I didn't use all the features available but for my needs it worked out perfectly. Their customer service is very responsive and polite when it comes to inquiries made.
Google Slides Timer Extension for Chrome. Get automatic timesheets and enjoy TrackingTime’s in-depth analytics.
With Google Slides, you can create your presentations, modify them, collaborate on them as a team and teach them anywhere. Your project can easily time tracking in Google Slides with the tools that Tracking Time has for your company. Find new ways to improve your processes and work times with Google Slides Timer chrome extension.
https://www.google.com/slides/about/