Short answer: choose Todoist if you need projects, labels, recurring rules, collaboration and cross-platform depth. Choose Cadence if your main pain is making this week visible and moving tasks when plans change.
What each app is best at
TodoistA mature task manager with projects, labels, filters, natural language dates, integrations and team options.
CadenceA native weekly board for Mac and iPhone with drag-to-reschedule tasks, quick capture and iCloud sync.
Where Todoist wins
Todoist is better for complex task databases, long-term project lists, recurring workflows, shared work and integrations. If you already have a well-tuned Todoist system, Cadence does not need to replace it.
Where Cadence wins
Cadence wins when the problem is not storing tasks, but deciding when they will happen. The week board makes overload visible. Dragging a task to another day turns rescheduling into one motion instead of a small planning session.
Better fit for Todoist
Large task libraries, teams, filters, project hierarchy and recurring personal systems.
Better fit for Cadence
Freelance weeks, indie app work, small client plans and daily review without setup.
Verdict: Todoist is the bigger system. Cadence is the weekly rhythm.