TickTick is a task manager first released in 2013.
Users add tasks in plain language, such as "call the dentist tomorrow at 3pm", and TickTick sets the date and reminder. Tasks sit in lists, tags and smart filters, and the calendar view shows tasks next to events from other calendars. A habit tracker and a Pomodoro style focus timer are built in. Lists can be shared for family or team use.
The free plan covers most needs. Premium adds the full calendar view, more lists, more reminders and progress statistics. It runs on phones, tablets, desktops, watches and the web.