Secret Diary with Lock is a free Android app developed by Devtiha LLC under the Lifestyle category. It is a personal diary application with a password-protected feature that allows you to hide your secret thoughts, ideas, and memories. The simple user interface makes it easy to use and navigate.

One of the main features of this app is the password protection. It ensures that your private information is secure and hidden from prying eyes. You can also view your entries by date, making it easier to keep track of your daily thoughts. Another great feature is the ability to share your posts on social media platforms like Facebook, Twitter, and Whatsapp. Additionally, you can add backgrounds and music to your entries to make them more personalized. The app also allows you to change the size and color of your writing.