A free program for Android, by Netigen Tools.

Unicorn Diary with a lock is a diary application that will help you remember your past events and future plans. Use this application to record your life’s emotions as time passes. Make it your trusted friend who never judges you and who’s always there for you.

This is a girl’s diary with a lock, so it is perfect for teenage girls and girls in general. It is a free application for any device.

Use this application to make your own personal journal of daily events, appointments, secrets, and feelings.

The diary allows you to make many entries in a day, a week, or a month. You can write down your thoughts or even future plans and who want to keep their secrets safe and private.