Clockify

It is quite practical, easy to use and create workspace.
Its app does not take up too much space in my phone memory.
Features of adding subtask for projects, I think, one of the best feature that make difference.
The way it offers reports is very powerful. Thanks to so many filtering and grouping options, you can track and monitor how you spend your time, in different aspects. You can have time report by different sorting options such like projects, tags, clients, tasks or name and etc. Beside, you can monitor 3 categories in one screen.
Its dashboard section is very effective to provide an insight. So effective that it usually make redundant to resort to report section.
Exporting the time report as .csv or .xls format is available. And the feature of importing .csv format makes easier to switch from another time tracker software.
Auto filling feature makes it even more practical.
It makes possible to create different workspace for different time-tracking purposes.
Timesheet section makes easier to add previous time input.
Calendar view make it possible to have powerful insight as to how you spend a week.

I want see time report of different workspaces, in one calendar view and graphics in dashboard, but Clockify does not have this feature. There could be a multiple workspace monitoring option in dashboard and calendar section. Which makes possible to compare the time spent for different works.
There could be an option for adding durations without time info. For example; adding 2 hours reading in Sunday, without bother paying attention what time it was.

Wow, where do I begin! I think the dashboard is my absolute favorite! To be able to see exactly which month I had spent how many hours (and minutes!) working on which project helps me greatly to plan my workload and to priorities.

Each time entry can be highly customized by connecting it to the relevant projects, giving it a very descriptive name and tagging it with special keywords. You can also mark every entry as payable or non-payable and for our company, where we use Clockify to pay our employees on a monthly basis, this and the rest of the features are indispensable!

Sometimes the browser tab crashes or when I start/stop the timer, the command does not go through. But that happens only 5% of the time so overall it is not a crisis.

Clockify makes it easy to keep track of multiple clients and the tasks that fall under those projects. As a freelancer with several different clients, Clockify's expense-tracking categories was the only solution that made sense.

I am an early adopter and browser integration was a problem, but the Clockify developer team has stepped this up with better support.

Clockify is an inexpensive option for small or startup companies. It has most features that these types of companies need to get up and running.

The reporting at times has been borderline useless at best incredibly confusing. I would run a report. My employee would run the same report. We would each get different results. Something in our administration levels must have affected the report. We create web software for a living, and we were so confused by much of the reporting that we couldn't determine what accurate numbers would be.