This one might be interesting for you. Our time tracking was based on Google Sheets but it was hard to aggregate data and have a good overview of how much time was spent in each of our projects.
So we have decided to create a simple tool where users just select a project, type description and start live tracker.
Then you can share a report with your client and that's basically everything. There are no more features and we don't plan to make the product complicated.
If it sounds like a tool for you, then please give it a try and let me know what you think: https://quidlo.com/timesheets/