I'm the creator of Memorigi, a fully featured to-do list, task manager, planner, calendar, and reminder app focused on user experience. We got #2 rank in the top 10 best to-do lists on Android Authority beating big competitors like Microsoft, Todoist, TickTick, and more.
Here is a detailed list of its features: https://memorigi.com/features.html. We recently launched v5 on Android and Web. We have more than 600000+ downloads in the Play Store.