A free program for Android, by ThomSan Software B.V..
If you want to make an inventory of everything that you need to do, and you don't want to use an app that has thousands of complex items, then To-do list is the right app for you. It can be used for a shopping list, an errand list or even a check list. The platform is very easy to use and allows you to add tasks by just writing down the item and the location. You can also mark the item as completed or deleted.
This app has a very simple user interface and it is designed to be used by people who are not computer science students. It has no complicated options and is just designed to be used by people.
