Ship vs Trello
Trello is a flexible board: you create the cards, move them and do the work. Ship starts from a brief, and Captain writes the plan and assigns the crew.
In Trello you are the team. In Ship the crew picks up tasks, reports progress and asks for approval before decisions that need you.
Trello has a free plan, and so does Ship. Ship Pro costs $39 per month, or $390 per year, and adds priority access to the crew.