AppLock Theme Jellyfish is an app protector tool that locks other applications on your Android device. Developed by SailingLab, this free app can lock apps like Facebook, WhatsApp, Messenger, Gallery, SMS, Gmail, Contacts, Settings, incoming calls, and any other app you choose. With AppLock, you can prevent unauthorized access to your mobile apps, ensuring privacy and security.

The app has both PIN and Pattern lock options, allowing you to choose your preferred style to lock your apps. Pattern lock is easier and faster to unlock, whereas PIN lock has a random keyboard, making it more secure. The app has built-in sets of beautiful pattern and PIN themes that you can choose from, and they will continue to update more themes in the future.