When comparing Tasks vs GTasks, the Slant community recommends Tasks for most people. In the question“What are the best to-do list apps for Android?” Tasks is ranked 18th while GTasks is ranked 33rd. The most important reason people chose Tasks is:
Many configuration options.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Very configurable
Many configuration options.
Pro Can create events on Calendar
Tasks can create events on your calendar if you set a due date and time. It also syncs the state (completed).
Pro Syncs to Google Tasks
Pro Easy to add complex tasks
The setup page of a task takes only a single page, which makes it fast and easy add one. But there are still a lot of options available, like:
- date and time
- repeating
- priority (four different colors)
- category
- list
- reminder (by time or location, different ringing schemes)
- attachement
- description
- hide until
- add to calendar
- timer
Pro Full featured widgets
Widgets can be truly customized. You can set a filter by automatic list (today, recent, uncategorized) or tag or list. There is a light, a black and a dark theme, plus a color setting. The opacity can be set, as well as the font size. Then you can decide to show the header, the settings, the due date, or the checkboxes.
Pro Import from Astrid
Tasks allows you to import your data from Astrid.

Pro Unlimited subtasks
Unlimited subtasks or sub sub tasks, as deep as you need, excellent for project work.

Pro Synchronizes with Google tasks available natively in GMail
Seamlessly syncs tasks.
Pro dark theme available
Pro time reminder is supported

Pro Closing parent task closes sub tasks

Pro Available on iOS

Pro Works with Chrome's 'Google Tasks Panel' extension
Cons
Con No syncing
Unlike most to-do apps, Tasks features no form of synchronization with other devices.
Con Pop up ads get in the way
The app frequently displays popup ads when you navigate the app, forcing you to pause to close them.
Con No recurring tasks fom completion
Con Does not support attachments
You cannot add attachments to tasks.
