What Trello is genuinely great at
Immediate comprehension. No training, no onboarding, no explaining. The free plan covers up to 10 collaborators with full editing, which is plenty for a small group, and paid plans start at $5 per user per month annually (Premium $10, Enterprise $17.50).
For "where is this piece of work in our process," a board is the correct shape and always has been.
Where it falls down
Kanban has no time axis. "In Progress" is a state, not a schedule. Twenty cards in Doing looks identical whether that's a day of work or a month, so boards drift — the column fills, nobody notices, and the standup becomes a status recital rather than a plan.
How Fuidzy is different
Our columns are hours. A block's position is when it happens and its width is how long it takes. You can still group by tag if you want a board view, but the primary object has a clock attached.
Use Trello if you need a shared board that anyone can pick up instantly and time isn't the constraint.
Use Fuidzy if the question is "will this fit this week" rather than "what stage is this in."