Focusmeter does not support todo-lists or tasks for now. Use tags to provide a flexible method to record your activities too.
Each timer can have up to two tags. For example, if you are studying Chemistry, you can have a tag called “Study” and another tag called “Chemistry”. This way, in your statistics, you can see how much time is spent studying in total and how much time is spent studying Chemistry specifically.
In Settings > Tags > Manage Tags, you can add/edit or delete tags.