I am a heavy user of Timeneye. I tried multiple other tools but none was a fit for me. I use multiple PM apps and I absolutely LOVE how Timeneye integrates with them. No matter if you use asana, trello, clickup or whatever there is an easy "start/stop" widget to track those tasks. You also see which task has been connected to the tracker.
Option to set project as billable, and later set which entries has been billed and which not. It's easy peasy to generate reports for clients based on that.
Support is awesome and I have only positive experience withe Timeneye. Would recommend to everyone, especially those working on more then one PM app. Timeneye, you rock!