Your mobile phone has become your digital safeChats, photos, online banking, health apps, social media… practically your entire life revolves around them. That's why it's becoming increasingly common to want to password-protect specific apps, not just the general phone unlock.
If you often let your children use your smartphone to play games, a friend to look at photos, or a colleague to make a call, adding extra blocking to certain apps is a very simple way to keep your privacy safe and avoid unpleasant surprises with sensitive information or unwanted purchases. Below is a comprehensive guide to learning how to password-protect specific apps on Android and iPhone, using both native methods and third-party applications.
Why is it worth putting a password on your apps?
Beyond using a PIN or fingerprint to unlock your phone, adding extra protection to certain apps is a very effective way to shield the most delicate parts of the devicesuch as online banking, messaging apps, or photo galleries.
When you lend your phone, or even if you lose it or it gets stolen, anyone could snoop on your chats, see your private pictures, or access your email and social media, which can lead to data leaks, identity theft or directly in someone getting involved where they shouldn't.
It's also very useful for those who share a device with children or family members, as it's enough to block some apps or even block app installation all with to avoid uncontrolled purchases, access to inappropriate content or that they mess up your phone by fiddling with sensitive settings.
However, some systems impose small limitations: for example, on certain mobile phones only a few can be protected. a few dozen individual applicationsTherefore, it is advisable to focus on those that handle personal data, money, or particularly sensitive information.
How to password-protect apps on Android using the phone's built-in functions?
Android as a "pure" system doesn't have a built-in universal blocking feature for each app, but almost all major manufacturers have added their own solutions in their custom interfaces. Thanks to this, you can Block apps from settings without installing anything extra on many models.
Lock apps on Samsung phones with Secure Folder
On Samsung devices, the most practical way to protect apps is to use the well-known Secure Folder, an isolated space where you put applications and files that can only be opened with a password, PIN, pattern or biometric data.
To configure it, go into your phone's settings and navigate to the section for “Biometric data and security”Inside you will find the "Secure Folder" option, from where you can activate it for the first time.
The system will ask you to choose a locking method (password, PIN, pattern, or fingerprint), and once that protected environment is created, you can... Add the apps you want to the Secure Folder so that no one can open them without going through that filter.
How to password-protect apps on Xiaomi with MIUI
Xiaomi, Redmi, and POCO phones with MIUI have a built-in tool for app lock, very easy to use and compatible with PIN, pattern, fingerprint and even facial recognition in recent versions such as MIUI 15.
Go into the system settings and look for the section on "Applications" or “Privacy and security”, where you will see the “App lock” option.
From there you will need to define a specific unlocking method, and once you have that, you will be able to Select one by one the apps you want to protect so that they always ask for the password or fingerprint before opening.
Block apps on Huawei with EMUI
Huawei phones (and many Honor phones with EMUI) also have a native feature called “Application blocking”which has been reinforced with recent versions such as EMUI 14, even integrating facial recognition in compatible models.
To find it, go to “Settings” and then to the menus of “Security” or “Security and privacy”, where you will see the Application Lock section.
Inside you can choose whether you want to use a PIN, password, pattern or biometrics, and afterwards you will just have to Select the apps you want to protect so that they remain behind that additional wall.
Block apps on Google Pixel phones
On newer Pixel phones, running Android 14 and later, Google has added its own system of blocking individual applicationsso that you no longer depend so much on external apps.
Go into your phone's settings and access the menu of "Privacy", where you will find the Application Lock section or something similar.
On this screen you can set a specific PIN, pattern, or password for this function, and then Select the apps you want to require that code whenever someone tries to open them.
Other Android layers with native lock
Besides Samsung, Xiaomi, Huawei, and Google, other major brands also include their own system for Protect apps with a password, although the names of the options may vary depending on the layer version.
- On Realme phones, for example, protection is managed from the settings, in sections such as “Fingerprint, face and password” or “Password and security”and usually has a specific "App Blocking" section within "Privacy".
- At OPPO, which shares many foundations with Realme thanks to ColorOS, the journey is very similar, since the interface is based on the same system and allows Activate app lock and associate it with your fingerprint or PIN. of user.
- On OnePlus devices with OxygenOS, the tool is usually found in the menu of "Utilities" under the name "App Blocker" or similar, from where you choose which apps you want to require a separate key.
- In the Vivo brand, app protection is managed through iManager, a system-specific manager where you'll find the option to “App encryption” to create a password and specify which applications will be protected.
How to password-protect apps on Android using third-party applications?
If your Android phone doesn't have built-in app locking, or you prefer a more flexible solution, you can use specialized apps from the Google Play Store that are responsible for protecting access to what you decide.
Before installing anything, it's a good idea to check the ratings, permissions, and the developer, since you'll be entrusting them with part of your security. Generally, it's a good idea. Install only from the official store and keep these apps always up to date.
How these blocking apps generally work
The vast majority of ad blockers work similarly: first you install the app from Google Play, then you define a Master PIN, pattern, or password and then you select from a list which of your applications will be protected.
When you activate the protection, the security app will ask you to grant it accessibility permissions or the ability to “to show itself on other applications”so that you can put your lock screen in front of the protected app before it opens.
Once everything is set up, every time someone taps on one of those apps, a layer will appear demanding a code, fingerprint, or pattern. Some even They take photos of anyone who fails to enter the password. or they allow you to hide their own icon so that it's not so obvious that they are installed.
AppLock by DoMobile Lab
AppLock, developed by DoMobile Lab, is one of the most popular Android solutions for Put a password on any applicationespecially since Norton App Lock stopped being updated.
This tool allows you to lock apps with a PIN, pattern, or fingerprint, protect photos and videos in a private gallery, and apply extra features such as Hide sensitive notifications so that they are not displayed on the lock screen.
Among its most striking options is the "intruder mode", which can take a picture with the front camera If someone tries to unlock an app and fails, you can even hide the AppLock icon so the protection is less noticeable.
Application Lock (InShot)
Another widely used alternative is the InShot app called “Application Blocking”, which stands out for its simplicity and for allowing locking via pattern, fingerprint or traditional password.
Its interface is quite clear, so in just a few steps you can choose which apps to block and how, without having to struggle with complicated menus or convoluted settings. confuse less experienced users with Android.
AppLock – Fingerprint (Lock)
AppLock – Fingerprint (also known as “Lock”) is one of those apps that goes a little beyond a simple passcode and allows Block calls, WiFi connections, Bluetooth or even that any newly installed app is automatically protected.
It supports PIN, custom pattern, or fingerprint unlocking methods, and also includes an intruder capture option if someone tries to enter your most sensitive applications without permission.
The less pleasant side is that in its free version includes integrated advertisingThis is something that some users find annoying, although in return it offers fairly comprehensive protection.
Other classic solutions: Smart AppLock and similar
In addition to the above, there are other well-known tools such as Smart AppLock or older classics like Security Master, which combine antivirus, file cleaning, and application blocking in a single packageHowever, they can sometimes be too cumbersome for someone who only wants to protect a couple of apps.
With Smart AppLock, for example, you can have your phone take a picture of the intruder, "disguise" the lock screen to look like a system error, or prevent certain apps from being uninstalled without first entering a security code.
In any case, if you're particularly concerned about privacy, it's always advisable to review what data each application collects, and check the permissions requested and read real reviews from other users before giving them free rein on your device.
How to password-protect apps on iPhone and iPad?
On iOS, the situation is different: Apple severely limits what third-party apps can do, so there aren't the same broad blockers as on Android. However, with the latest versions of the system, it's possible. protect specific apps quite easily.
Block and hide apps on iPhone with iOS 18
With iOS 18, Apple has taken a significant leap and added the ability to lock individual apps directly from the home screenusing Face ID or Touch ID.
To activate this protection, simply press and hold the icon of the app you want to protect until the context menu appears and select the option “Require Face ID” or “Require Touch ID”, depending on your model.
From that moment on, every time someone tries to open that application, the system will ask for your face, fingerprint, or code, so that No one can access it without your permission.even if the mobile phone is unlocked and in their hands.
Furthermore, iOS 18 allows not only locking but also Hide the app from the home screen and search resultsTo do this, you can select “Hide and require Face ID”, so that the application disappears from the SpringBoard and will only be visible in the App Library, within a hidden apps folder.
To access that folder, you'll need to go to the App Library, locate the hidden apps section, and authenticate—an extra layer of discretion if there are apps that You don't even want them to appear in plain sight.
Use “Screen Time” to block apps in iOS 17 and earlier
If your iPhone hasn't yet updated to iOS 18 and you're still on iOS 17 or earlier, you don't have that direct "Require Face ID" button, but you can resort to "Use time", the usage control tool that Apple introduced several generations ago.
This feature was designed to limit the time you spend in certain apps, but it can be used to block the app after a minimum time has elapsed, only allowing access to other apps. be accessible with the Usage Time code.
The process involves first activating Screen Time in the settings, defining a specific PIN for this function, and then creating "App Usage Limits" for the categories or individual apps you want to block.
If you set a limit of, for example, one minute per day for a specific app, as soon as that time is exceeded the app will be locked, and to continue using it, you will need to enter the code you have defined for Usage time, separate from the phone PIN.
Other ways to restrict access on iOS
Although there is no universal Android-style blocker, many iOS apps integrate their own internal security system, especially those related to banking, health, or password managementwhich usually require you to authenticate with Face ID or Touch ID every time you enter.
The Notes app, for example, lets you lock individual notes by pressing and holding them and choosing "Lock note," making them accessible only with [unclear - possibly "unclear" or "unclear"]. Face ID, Touch ID or the code that you use on the iPhone.
You can also use Content and Privacy Restrictions within Screen Time to hide certain apps from SpringBoardHowever, this method is designed more for parental control than for blocking access to specific apps among adults.
Third-party apps for iOS
The App Store offers tools that create secure, "safe"-like environments where you can store documents, photos, or even access to certain functions, as it does lockdown appsbut they don't have the same freedom as their Android counterparts.
With these types of solutions, the lock occurs within the app itself; that is, you enter information there and protect it with a code or Face ID, but you can't Block any system application without going through Apple's limitations.
How to set a password on WhatsApp and other messaging apps?
WhatsApp is probably the app that most urgently needs protecting on most mobile phones, because that's where data accumulates. private conversations, photos, documents, and even work dataFortunately, the app itself includes its own locking system on both Android and iOS, and also allows you to create temporary messages that self-destruct to add privacy to conversations.
On Android, if you open WhatsApp and go to “Settings > Privacy > Fingerprint lock”, you can activate an option that allows you to require fingerprint to open app and define how long it takes to request it again (immediately, after one minute, 30 minutes, etc.).
On iPhone, the path is similar: “Settings > Privacy > Screen Lock”, where you can indicate that it is required Face ID or Touch ID to enter to your chats, preventing anyone from opening the app if they pick up your unlocked phone.
Keep in mind that even with this block active, notifications may still display message content or allow you to reply directly from the alert if you don't adjust your settings, so it's advisable to Review the system notification options to hide the text of incoming messages.
Other apps like Telegram also allow you to activate an internal lock code or two-step verification from their own privacy and security settings, so that No one can open the app without an additional key.even if you have physical access to the phone.
In Telegram, you can also choose between a lock code to open the app or two-step verification linked to your account, which strengthens security both locally and in case of access attempts from other devices.
Extra tips to improve the security of your apps
Setting passwords for specific apps is a very useful measure, but it's of little use if the rest of the device is unprotected or if you use overly obvious passwords. It's advisable to combine these locks with good general security practices.
The first thing to do is make sure you have a robust screen lock method enabled (PIN, password, complex pattern, fingerprint, or facial recognition) and that your operating system and applications support it. they are always updated to the latest version available.
It's also important to carefully review the permissions of each app, especially if you're going to install third-party blocking tools, checking what access you're giving them to your information and avoiding installations from unknown sources outside of the Google Play Store or App Store.
If you use security apps, it's worth taking a look at their privacy policies and other users' reviews to see if they truly respect your data and if They haven't had any problems with leaks or suspicious behavior.
Finally, it's worth remembering that this entire system is only as strong as your passwords: avoid reusing the same PIN everywhere, don't use ridiculous combinations like "1234", and if possible, rely on two-step verification and password managers that make it easier for you to keep everything under control.
With native Android and iOS options, support from some good third-party apps, and a little common sense when managing your passwords and permissions, you have everything you need at your fingertips. decide who gets into each app on your mobile phone And who wouldn't, keeping your digital life much more protected without complicating your life too much. Share the information and help others learn how to password-protect their apps.