Lockdown Pro is the BEST AppLock & Private Gallery, it supporting more than 30 languages.

Features:
• AppLock: lockdown any apps.
• Private Gallery: Hide pictures, videos (support .gif image).
• Three password modes: Pattern Lock, Classic Lock & Calculator Lock.
• Supported Fingerprint for Samsung devices and some devices running android Marshmallow
• Smart lock: Auto lock/unlock with smart watch, car or use address wifi, location.
• Observer: Send email with some info and pictures of the person who wants to access your phone.
• Fake cover: This feature will fake a crash dialogue cover when you open an app that has been locked.
• Backup & restore registered apps to Google drive or sdcard.
• Random keyboard password.
• Time pin password (Ex: If the time is 13:12, your PIN will be 1312).
• Themes store (so many beautiful themes with Material design for your choice).
• Screen timeout: The screen will never turn off when running registered app.
• Auto-Rotate: The screen of your device will not auto-rotate when running registered app.
• Hide app icon (Remove Lockdown Pro icon on App Draw & Home screen).
• Easy to use, beautiful UI with Material design, ripple animation.