Android lock applications with a password. Setting a lock code for individual Android applications
I think that almost all of us, at least once, have had the desire to protect one or another application on our tablet or smartphone from prying eyes. If you are one of those who do not want others to be able to read your SMS, emails, view photos, launch online banking applications, etc., and for one or another reason do not want or cannot set a password on the tablet lock screen or smartphone, I advise you to take a closer look at the Lockdown Pro application that recently appeared on the Google Play Store.
As its developer quite confidently states, Lockdown Pro is the best tool that allows you to set a password to launch any application, such as SMS, Gmail, Facebook, Whatsapp, SnapChat, Instagram, Viber, Line, etc. Not only that, but with Lockdown Pro you can prevent unauthorized installation and removal of applications, block incoming calls, block applications via SMS, automatically block (if desired) all applications installed on the device, enable blocking mode in a specific place (when leaving home, on work, etc.) or when connected to a specific WiFi network. To prevent anyone who tries to launch a blocked application from guessing that your smartphone or tablet is protected, you can enable a false error message when launching them.
You can protect applications from uninvited guests using a password, a pattern, a mathematical example (by typing 6x7+5-4 on a calculator) or a dynamic PIN code that changes depending on the current time (for example, at 14:56 it will be 1456 or 6541 when setting the inversion mode).
For added security, you can hide the Lockdown Pro icon from the app drawer. After that, to launch it, you will need to dial the code **##123**## (default) into the dialer. You can change this code to any other. Finally, you can set when the application lock will be triggered: after the screen turns off or after a certain time interval (30 seconds, 1 minute, 2 minutes), which allows you to save you from constantly entering a password while you use your smartphone or tablet.
The application is very easy to use. Its interface is simple, intuitive and, which is important for many of us, almost completely Russified. I think now you understand why the developer is so confident in his application. And indeed, he has something to be proud of.
Download Lockdown Locking application for Android you can follow the link below.
An application for blocking unwanted application launches. If you don’t want to put a locker on the screen lock and find it inconvenient to enter a graphic or numeric code every time you unlock your smartphone, but your smartphone has applications that need to be protected, then this is the solution for you.
After you install the application, it will ask you to come up with a graphic or numeric password, with which you will gain access to the blocker application itself, and those applications that you block there. That is, the password in all these cases will be the same.
The application has only one work area, which is divided into three tabs. In the first you see the entire list of applications, starting with the most popular ones, in the second you see blocked applications, and in the third you see unblocked applications. To lock or unlock an application, you just need to slide the switch to the right or left. It would be very difficult to mix things up.
After that, if you, or someone else, wants to launch a blocked application, to launch it you will need to enter the pattern or digital key that you came up with at the very beginning. The design of the application can be called minimal and even simple, since there are no graphic delights or animations provided here. Except, perhaps, for the effect that occurs when you launch a locked application: the color of the lock screen will be the same color as the application we are launching.
In the application settings, you can select your preferred locking method: pattern or digital code, specify whether to hide the lock pattern (code) when unlocking, set up a fingerprint (if you have a fingerprint scanner), re-lock, temporarily disable the blocker, and more. AppLock (Application Protection) is a great way to protect your personal data from prying eyes without having to unlock the entire smartphone every time, but only certain applications.
Peculiarities:
- Block any application.
- Supports more than 10 languages.
- Superb Android L design.
- Easy to use.
- Proactively protect new applications.
Questions and answers:
Question. How do I change my PIN?
Answer. Open App Lock, go to the menu in the upper right corner and change your password.
Question. Do you have customer support?
Answer. Yes. KeepSafe provides customer support from real people in over 10 languages: This email address is being protected from spambots. You must have JavaScript enabled to view it. .
Question. How to enable/disable automatic protection?
Answer. Check the box at the top of App Lock to manually enable protection when installing a new application in the dialog box.
Question. Does App Lock work when I restart my phone?
Answer. Yes, after rebooting the phone, the application starts automatically and protects blocked applications.
Question. Can I unlock apps again?
Answer. Yes, you can lock and unlock any app at any time using the switch.
Download the application to block unwanted application launches - App Lock (Application Protection) on Android you can follow the link below.
Developer: Keepsafe
Platform: Android (Varies by device)
Interface language: Russian (RUS)
Status: Free
Root: Not Needed
One of the simplest blockers without unnecessary settings and functions. Protects access to applications using a password, fingerprint (if a scanner is available) or a pattern. To prevent protection from triggering too often, you can set a re-blocking timer.
Although App Lock warns that it contains ads, no ads appeared during testing of the free version. If they bother you, you can get rid of advertising and thank the developers through a one-time payment.
2. App Locker
Like the previous blocker, App Locker is one of the simplest programs in its category. It also supports three security options: password, fingerprint (if the device has a scanner) and pattern. If you wish, you can choose a color scheme for the interface.
App Locker will display ads on your lock screen. You can remove ads by purchasing the paid version of the application.
3. Hexlock
Hexlock protects apps using a password, fingerprint scanner or pattern. In addition, this blocker supports, which allow you to group different programs for convenient management of their protection.
Recent updates have expanded the capabilities of Hexlock. A protected .appeared in the application. Media files added here can only be viewed inside the Hexlock after it is unlocked.
The developers also added a section for monitoring suspicious activity. The time and date of unlocking programs are displayed here, along with photographs of the front camera that Hexlock takes after unsuccessful attempts to bypass the protection.
Additional features of the application include customizing the background for the lock screen and a timer until you are prompted for a password, fingerprint, or key again.
You will see advertisements inside Hexlock and while unlocking programs. But it is not available in the paid version.
4.AppLock
In addition to protecting applications using a password or pattern, AppLock can be a storage for photos and videos. You can access them only by unlocking the program. Moreover, in AppLock you can set up profiles to quickly manage groups of programs. With these features, the application is reminiscent of Hexlock.
AppLock can block access to Wi-Fi, Bluetooth and automatic synchronization switches. The program also has advanced security settings. These include the display of a system error message when logging into locked applications, the invisibility of the AppLock icon, and the constant changing of the positions of numbers on the password entry screen. These options will help confuse the attacker.
In addition, in AppLock you will find a large selection of themes for the lock screen.
5. Vault
The most functional blocker from this collection. Vault locks apps with a password and acts as an encrypted storage for media files, contacts and SMS. For reliability, the program stores data entrusted to it in the cloud. Vault has a browser inside where you can save and use web bookmarks, hiding them from prying eyes.
The free version of the blocker contains restrictions and is filled with advertising. But the application has a paid subscription for premium mode. Subscribers are not shown ads, and are provided with additional features and bonuses: more space in the cloud, hiding the Vault icon, activating the camera during unsuccessful unlock attempts.
Setting a lock code for some apps is a great way to increase the security of your device. With the E-lock application (App Lock) this is as easy as changing your PIN code. Many people strongly recommend setting a lock code for the entire device, but sometimes this can create a number of inconveniences.
How about forgetting about locking your device and setting a security code only for those applications that you would like to hide from prying eyes? The Android app App Lock (E-lock) makes this very easy. Although nothing will stop you from using App Lock to lock your entire device, thereby ensuring the maximum level of security. But still, the main feature of the application is that it will allow you to set a lock code on certain applications, thereby preventing unauthorized access to private information.
Setting up and using the free E-lock application (App Lock) is very simple:
Step 1: You need to install App Lock first
from Android Market. When you first launch the application, you will be asked to set a lock code and a security question, which you need to remember. 
Step 2: After configuring the required security settings, you can specify which applications will require an access password. Simply move the switch next to the corresponding application to block the free launch of this application. 
Before exiting the application, there is one important function that it is advisable to activate. Switch to the “System Lock” tab and slide the switch on the “Install/Uninstall” item. By doing this, you will prevent unauthorized deletion of the App Lock application. If you do not activate this option, then the person who has your phone in his hands will be able to safely remove App Lock and gain access to your information. 
That's it. Now, to access the applications that you have marked in the E-lock, you will need to enter the previously specified lock code.
If you own an Android smartphone or tablet and don't use the screen lock feature (or you can unlock it just by swiping), you can still protect the contents of your phone. To be more precise, you can block free access to individual applications and prevent their unauthorized use thanks to special applications.
The most popular and simplest is AppLock. It can be downloaded for free from this link.
After downloading and installing, open App Lock. You will be prompted to create a password. It is the one that will be requested whenever you open this application, as well as when logging into any of the applications that you protect with it (until you change it yourself). Make sure you remember the password. Also, for security reasons, you will receive an email. Now you can start blocking access to individual apps, including Phone, Messenger, Facebook, etc.
AppLock's interface is very simple and easy to use. It will provide you with a list of all applications installed on your device, and you can block the ones you need by simply clicking on the “Block” button on the right. AppLock also allows you to block free access to photos and videos (if you place them in the Photo Vault or Video Vault directory)
Once you have blocked free access to a certain application, it will open to you only after entering the password you previously created on AppLock. Of course, you can remove these precautions for any application at any time.
It is not necessary to use only AppLock to keep your data safe. There are also other similar applications that you can download. You can find them on Google Play by simply searching for "app lock".
1. This is what the AppLock app looks like when you first open it. It requires you to enter an initial password.
2. ... letter to improve security.
3. And here is the AppLock interface. You can scroll down to check all the apps you want to protect access to.
4. Let's say you want to block free access to the Camera application. Just click on the "Block" button to the right of it.
