Google Keep is a free download available on both Andriod, Apple, Chrome and it is also available in a web-based platform. You will need to sign in with a Google email address to set up.
Read more about it here.
Once downloaded and signed in, Google Keep allows you to add notes, lists, drawings, photos, and audio in a really simple and easy to use format.
- Share your notes with others to allow collaboration
- Set location/ time-based reminders for you to action your notes/lists
A note created on Google Keep, will then be available across all your Google enabled devices.