Timing Sync shows you what apps, documents and websites you spent (wasted?) time on and helps improve your productivity. It automatically syncs across all your Macs, giving you the complete picture of how you spent your time. You can think of it as the equivalent to iOS's Screen Time, but for Mac.
Timing is an automatic time tracking app for Mac. Instead of making you do the work by starting/stopping Timers, Timing automatically tracks how much time you spend in each app, website and document. That way, you can later see exactly how productive you were and use the tracked time to bill clients.