Fortify: App Lock PIN for Android

Fortify: App Lock PIN is a free utility for Android that focuses on enhancing user privacy by locking applications. It features secure PIN entry and biometric unlocking, enabling users to protect sensitive content in social media, photo galleries, messaging, and financial applications. The app is designed to be lightweight, ensuring minimal impact on device performance and battery life, while also allowing for customizable lock delays to facilitate smooth transitions between apps.

The application employs the Accessibility Service API and overlay permissions to create a lock screen over any protected application, providing immediate protection against unauthorized access. Additionally, Fortify prioritizes user privacy by not collecting or sharing personal data, thus maintaining security without compromising user information.