Boards show flow; Gantt charts show time. Jira offers a timeline view on projects and keeps Plans (formerly Advanced Roadmaps) for its higher plans. Starlex includes a Gantt chart on every project.
Dates you already have
The Gantt tab draws issues from their start and due dates, grouped under their epics. Drag a bar to move it or its ends to change the dates; the issue updates for everyone.
Sensible date rules
If a start date moves past the due date, Starlex clears the due date instead of saving an impossible range. Dates are stored as calendar days, so a due date never shifts with someone's time zone.
No upgrade required
In Jira, serious scheduling usually means a higher plan. In Starlex, every project has its Gantt chart from the start, which is exactly what most teams need.