Microsoft's To-Do app updated to Version 1.44 today on Apple's iOS devices. This latest update revolves entirely around the recently introduced Planned smart lists feature and adds new groups for list items which can be collapsed or expanded for greater convenience.
Here's the official release notes:
We’ve added sections to the Planned smart list, so you can easily see your scheduled tasks grouped by Today, Tomorrow and beyond. You can even keep track of those past due tasks under Overdue.
And if you’d rather not see those tasks from the past or those too far in the future, you also have the option to collapse each section in Planned. Just hide the other sections to focus on your tasks due Today, Tomorrow or beyond.
We’ve also added the option to automatically hide your empty smart lists, so you won’t see an empty Planned or Important list in the sidebar.
To-Do is a free app designed for managing tasks and to-do lists. Versions of the app are available on Windows 10 Mobile and PC and Android in addition to iOS and there's also a version that works on the web.