Journal Book: Personal Diary with lock, Notes is a free Android app developed by Self Mentor under the Lifestyle category. The app is designed to help users record their daily activities, experiences, thoughts, and ideas in the easiest way possible. With this app, users can organize their diary/journal entries or notes from the past. The app works completely offline, and every entry is stored only on the user's device. Users can be 100% sure that no one will ever read their personal diary with lock.

The app allows users to add photos from their camera, files, or gallery and add a mood emoji to each entry to express their emotions in a creative way. The app features a beautiful main screen calendar, and users can easily create, modify, or delete entries. Users can make unlimited entries every day and organize their entries with tags. Additionally, the app has a feature that helps keep the diary private by allowing users to set a diary protection pin code or fingerprint. Users can export their journal to Text and PDF File, print their journal including images, and share their diary and images with friends as an email attachment. The app also offers a daily reminder with custom time, and users can explore media, documents, and recordings.