IROGAMI is a free app that you can use for all kinds of things, such as: 

• Make an inventory of your things: you can use it as an app that saves your pictures, text files, PDFs, etc.
• Put your reminders on the home screen: put your favorite color on the home screen.
• Save a beautiful memo as a picture: you can save the memo as a picture and use it as a lock screen background.
• Add a sticker to the picture: you can add a sticker to the photo.
• You can also take a screenshot and use it as a background.
•  Add a favorite color to the color.