Simple GTD app with priority matrix and home widget

Question

(This is not the duplicate of GTD Android App and GTD web or cross-platform app.)

I'm looking for a GTD app with following features:

• Home widget which accepts single tap activity to
  • mark a task: done, deleted, do it later
  • add/edit task
• Let me maintain long check lists, nested lists, grouped lists etc.
• I can mark some tasks from the checklist to do it today
• Today list should be just the reference list of tasks from other checklist
• Multi platform (Android, and web)
• Supports priority matrix (recommended but optional)
• One time purchase is fine

Why not checklist app?

It matches most of the features I'm looking for. But

• Don't have priority matrix (can be ignored)
• Need to copy paste tasks from other lists to today list

Why not Taskpad?

Really good, specially adding task from widget. But

• Difficult to maintain long lists
• Don't support nested lists
• Need 3 taps to mark a task done
• No separate list for today

Why not Goal Meter? (I've tried its premium version)

It's cool art make me relaxed. But

• Need 3 taps to mark a task done
• Beautiful arts reduce number of tasks to display on the home widget
• Multiple taps to add a task

Answer 1

Toodledo

I believe this application can address all the feature I'm looking for in following ways.

• For today virtual list
  • Either I can change the status of a task to "Next Action", or star a task, or change it's priority to "Top", or tag it as "today", or create a context "today" ... so many ways.
  • Then configure widget to show hotlist or a list satisfying any criteria given in above point.
• For priority matrix, I'm tagging tasks as either urgent or important or both.
• Syncing has an issue. But it has cross platform support.
• It let me made long check lists. Nested checklists is a paid feature but I can create multiple folders in this case.