Register the activities to be recorded. All activities should be included in one of the categories such as Exercise or Study.

Pressing the Play button on an activity starts the recording of the activity and the Stop button completes it.

On a weekly basis, you can review the amount of time you spent on each activity and each category, as well as the progress of each weekly target.

Using Sumtimer's Chrome extension, you can, for example, block Twitter and Youtube while doing activities that belong to the "Study" category.

You can set a target activity time per week for each category and monitor its progress.