Secret Journal is an Android application developed by Brewster that allows users to keep a diary with a password to secure their secrets. This app is perfect for those who want to keep their daily experiences and thoughts private. The app also includes a secret address book, which allows users to call directly from the app.

Additionally, Secret Journal offers various fonts to customize the diary's appearance. It also has the ability to save and restore the secret journal data to SD. The app provides an option to export the database to Gmail, Google Drive, Dropbox, and other platforms, making it easy to transfer data to another phone. However, it's important to note that the password can be read if the file is opened with an SQLite tool.

Overall, Secret Journal is a useful app for those who want to keep their daily experiences and thoughts private. Its features are user-friendly, making it easy to use and customize.