Taskful - Deadlines, meet your match.
BallerTODO - Ditch the list! Organize like a baller, get stuff done.
Calendarist - Time blocking companion for Google Calendar
Centered - Centered helps you get into a Flow State faster and stay there longer so you can do your best work.
Gone - An ephemeral to-do list
Planny 3 - Planny is your new friend helping you to be more productive.