Microsoft To-Do is a to-do list application that can be used to manage lists & tasks.
Due is a reminder tool to help you manage and complete tasks.
iPad Task Management
Helping you find the perfect iPad app for your tasks
You can use Apple Reminders, as Apple's to-do list app, or there are more alternatives that work on iPad like Things 3, Todoist & TickTick.
Create a list inside of Apple Reminders to help you with organizing a list of tasks for the work or life. The iPad Reminders app has a way to break down a list for groceries, or work based lists too.
The best free iPad to-do list app is Todoist.
Due is one of the best free iPad reminder apps to check out.