The best alternatives to Quick Check are Todoist, /todo, and TaskPaper. If these 3 options don't work for you, we've listed a few more alternatives below.
Make lists and get organized. TaskPaper is a plain text to-do list that’s surprisingly adept. Thoroughly modernized. TaskPaper 3 is all new, while still retaining the same plain text design that’s been getting things done since 2006.
Checklists help you consistently get things done right ✅ Travel packing & Gym essentials can now be in simple checklists which you can go through before leaving home. Voice controlled checking helps you go through the list without touching it.
Todoo is a task management system that helps you organize your daily todos. The core idea is to work on tasks you can complete today - tomorrow you clear your list and start again. Create todos, sub-todos, sub-sub-todos, etc. Label your todos & add reminders.