Privacy Master - Hide, AppLock is a free Android application developed by Privacy Security Lab that provides phone safety protection. This professional but lightweight app (only 1.7MB) enables users to encrypt and hide their images, videos, and notes on their phones. It also allows users to lock any app, including Facebook, WhatsApp, and Messenger.

With this app, users can keep their privacy safe from prying eyes. The app helps to hide and clean their notification bar and clean up tracks to protect from privacy leaks. Moreover, the app's Private Browsing with Tracking Protection blocks parts of web pages that may track browsing activity. It even auto-cleans the record of web surfing.

One of the standout features of this app is that it uses Accessibility services, which makes it user-friendly. Overall, Privacy Master - Hide, AppLock is a reliable privacy protection app that is easy to use and highly effective at ensuring users' privacy.