Want a simple time tracking app for freelancers

As a freelancer, I struggle to track time accurately across multiple projects. Existing apps are either too expensive ($20+ per month) or have poor UX with complicated setup. I often forget to start/stop timers, leading to lost billable hours. Need something that just works without getting in the way.

A simple time tracker with project categorization, automatic idle detection, and easy invoice generation. Should be affordable for solo freelancers and work seamlessly across desktop and mobile.

Cross-platform, offline mode, project templates, export to popular formats (PDF, CSV), automatic idle detection, simple invoicing