Firefly Todo is a drag-and-drop calendar app for Apple devices. It catches every fleeting thought in its Inbox, then lets you drag and drop tasks into the calendar like moving sticky notes. Its dual-mode scheduling offers flexible time boxes (day/week/month) for loose tasks and precise scheduling for fixed ones, making plans resilient to changes. With 10 widgets and Shortcuts, you can view, check, or create tasks without opening the app.