TagTivity is an application for iPhone and Apple Watch to monitor the time spent on your personal and professional activities.
You can create your own types of activities and have a comprehensive and personalized view of the organization of your days.
With the support of the Apple Watch, start an activity on your iPhone and keep checking for the watch and vice versa.
TagTivity also includes an extension to add to the "Today" menu of your iPhone for a quick look at your current activity.