App Locker Tools to Protect Private Apps and Data | 4
Update: Sep 7, 2026 · 1576 apps reviewed
App locker tools add a second layer of privacy by blocking access to selected apps with a PIN, pattern, password or biometric check. They are especially useful for messaging, banking, gallery and social apps that can reveal a lot in a few taps. The best options combine fast unlocking, reliable relocking after screen-off, and flexible controls for hiding notifications or covering app previews. Some also include intruder selfies, vaults for files and photos, or profile-based rules for shared devices. Choosing well means balancing convenience, security and how much control you want over what other people can open.
Top programs about App Locker
- 4
1 reviews
With the help of the excellent privacy protection and data encryption app Gallery Lock-Secure Folder App, you may effectively hide photos, recordings, videos, and…
- 5
12 reviews
Lock Screen iOS 16 is an Android application developed by ProLock that allows you to customize your lock screen with ease. With a wide…
- 3.8
4 reviews
Lock-screen info panels for an at-a-glance Android setup
- Customize wallpapers, clock styles, and lock-screen widgets
- Add animations and effects to personalize the lock screen
- Show NowBar updates for weather, music, and battery status
- Surface key info without unlocking the phone
Ideal for
- Android personalization fans
- People checking status at a glance
- Lock-screen music controllers
Security Architecture
4 / 10Encryption approach, zero-knowledge design, and claimed audit history.Usability & Convenience
4 / 10Autofill, biometric unlock, browser extensions, and daily ease of use.Feature Breadth
3 / 10Password tools: generation, breach monitoring, secure notes, and 2FA management.
The NowBar is the standout here, putting weather, music, and battery details on the lock screen so you can check them fast. I’d treat this as a personalization tool first and a convenience layer second, since the source focuses on visuals and quick-access info rather than password management or encryption features.
Anthony John Padilla - 4.2
18 reviews
Secure Your Apps with Fingerprint and Pattern Locks
- Lock apps using fingerprint for quick access
- Supports PIN and pattern for enhanced security
- Customizable lock screen with multiple color options
- Runs at startup to ensure constant protection
Ideal for
- Parents securing apps from children
- Users avoiding unauthorized data access
- Frequent travelers needing extra security
Usability & Convenience
7 / 10Autofill, biometric unlock, browser extensions, and daily ease of use.Feature Breadth
4 / 10Password tools: generation, breach monitoring, secure notes, and 2FA management.Security Architecture
4 / 10Encryption approach, zero-knowledge design, and claimed audit history.
This app provides a robust solution for securing personal data on Android devices. Its combination of fingerprint and pattern locks makes it a flexible choice for users prioritizing privacy.
Anthony John Padilla - 5
4 reviews
HideX is a highly trusted privacy lock and app hider that disguises itself as a calculator. With over 100 million users worldwide, it provides…
- 5
3 reviews
App Lock is an Android application developed by Little Angel that provides an extra layer of protection to your phone. With this app, you…
- 4.8
5 reviews
Calculator Lock is a versatile app that provides a secure space for storing personal pictures, videos, and other files. By using this app, users…
- 4.6
61 reviews
Dialer Lock-AppHider is a free social and communication app designed to enhance user privacy by securing apps and data from unauthorized access. Its primary…
