KanbanTab is an app that will help you to organize your tasks. With this app, you can create as many tabs as you want and add as many notes as you want. All of the tabs will be accessible even after you close the app.

There is also a "done" button. If you mark a task as done, it will no longer appear in the list. The app will also allow you to create an "undo" button. This means that you can undo the last action you performed. If you accidentally click on the "done" button, you can undo that action.