Need Task/ToDo app with monthly calendar view, start dates for tasks and multi device sync

Hello! I am really hoping that someone can help me find what I am looking for?

I have been looking all over the play store for a Task app to manage my personal tasks, that has the requirements I listed below. I haven't come across something that matches all of these. A few have come close, just missing one thing or another, and others have a lot of bugs or poor UI in them. So am wondering if anyone can please suggest some that they know of?

Requirements:
1. Ability to add tasks with...

Need Task/ToDo app with monthly calendar view, start dates for tasks and multi device sync

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