When comparing GTasks vs Listonic, the Slant community recommends Listonic for most people. In the question“What are the best to-do list apps for Android?” Listonic is ranked 17th while GTasks is ranked 33rd.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
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
Pro Easy list-sharing with other users
Pro Provides you with useful cooking tips
Pro Automatically categorizes items by aisle
Listonic will show an icon that represents an aisle next to the item.
Pro Syncs between all your devices
Pro Speeds up the creation of a shopping list by allowing you to choose from a list of your favorite products
The app can show you a list of items you have chosen most often. That list can then be used to quickly create a shopping list from your favorite products.
Pro Smart voice input
Pro Environmentally-friendly
Fights waste. You plan what to buy and don’t end up buying more stuff that necessary
Cons
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.
Con Only preset categories available
There's currently no way create your own categories for items. That functionality might be coming in the future.