I was pleasantly surprised by this solution. It is just what I was looking for.

For a fast and reliable time tracking on several clients / projects.

There was a bug in the budget tracking but quickly solved by the support.

I also took another solution via appsumo. Maybe other features but not useful for me. Here it goes to the essentials with a good grip fast and functional. Not a gas factory.

Among the useful improvements, it would be to have a report in Excel format. and why not a mobile application.