What TickTick is genuinely great at
Range, for very little money. Roughly $3 a month (or $35.99 a year) gets you a task manager, a habit tracker, a focus timer, six calendar views, a kanban board and natural-language entry. Nothing else in the category bundles that much for that price, which is why it wins value comparisons more or less every year.
It also gets the same fundamental point we do: habits and tasks belong in the same app, not two.
Where it falls down
TickTick's calendar is a view of your tasks. Ours is the primary object you manipulate — the difference sounds academic and isn't. In TickTick you edit a task and the calendar updates. In Fuidzy you grab the block and pull it, and the task is whatever you just drew.
It also won't stop you stacking two things on one hour, and its habit streaks use the standard reset-to-zero mechanic — the thing most strongly associated with people abandoning habit apps within a month.
How Fuidzy is different
Direct manipulation of time, a lane rule that stops accidental double-booking, a habit grid that distinguishes "missed" from "never asked," a companion that remembers what happened, and a desktop presence that keeps working when the window is closed. Also $0.
Use TickTick if you want maximum capability per dollar, on every platform including phones — which we don't have yet. That's a real advantage and it might decide it.
Use Fuidzy if you want to plan by dragging rather than by editing, want the day to push back when you over-commit, and are on Windows or the web.