myDiary is the name given to this application that allows you to create your own password protected diary.
Choose a password, that's the first thing you'll have to do. Then it's very easy to use: choose a date and write the things that happens to you that day. It will be saved automatically.
If one day you want to read it, you only have to enter your password and choose a date or search for certain words.
Finally, it doesn't require to be installed and allows you change the picture of the front page of your diary.