When comparing Microsoft To Do vs Simpletasks Dropbox, the Slant community recommends Microsoft To Do for most people. In the question“What are the best GTD apps?” Microsoft To Do is ranked 13th while Simpletasks Dropbox is ranked 19th. The most important reason people chose Microsoft To Do is:
Simple interface and streamlined.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Very basic and straightforward
Simple interface and streamlined.
Pro Multidevice sync
Pro Cross-platform
Available on Android, iOS, Windows and web.
Pro Office integration
Pro Reminders and Due Dates
Pro Smart suggestions
Pro Can also be used as a note-taking app
Pro Infinite color-coded lists
Pro Make todos in one minute or less
Pro The best from Microsoft
Pro 100% Free
Just like todo.txt cli, this is 100% free (although donations are accepted).
Pro Also comes in a cloudless an Owncloud version
For those who don't care about syncing there is a cloudless version while people who run Owncloud may opt for the Owncloud version.
Pro There is an add to calendar button
This not only tells one's calendar (and thus any devices that sync with your calendar) about the todo, but allows all synced calendars to play an audible alarm when the todo is scheduled to be finished.
Pro Seemless compatibility with todo.txt cli
Let's one sort to-dos by due date then priority
Cons
Con Few features
It doesn't have a lot of features that Wunderlist had, which was discontinued for this app.
Con No Tag-Manager
Other apps let you better make use of labels.
Con No Natural Language Support
Con A Microsoft Product
Some people have a distaste for Microsoft, and may avoid it for this reason. This includes people who are angry that Wunderlist has been discontinued in favor of this app.
Con Must use DropBox service
Con As far as I know this app is Android only
I believe Simpletasks is an Android only app.