Automatic Sub-tasks manager
The automatic Sub-tasks add-on is a great addition to your workflow as it speeds up the planning and estimating process.
If you have common sub-tasks for your Scrum stories such as peer review, QA, design, etc, or common sub-tasks for your BAU activities such as analysis, validation, design, etc, then this add-on is going to save your team a great deal of time in your work flow.
This add-on is simple, focused to do one thing and do it very well.