9 Best Secret Calculator Apps to Hide Files on Android & iOS

There are some things we want to hide. It can be a set of private photos, secret chats containing important data, or just a piece of information we don’t want to share with others.

One way of solving these problems is to hide files by creating a secret folder. You will need a special app and a complicated password. But this is quite difficult.

Another way is to download a secret calculator app that will work as a container for your private files. Nobody will open this application, thinking it’s a normal app for arithmetic operations.

By the way, if you want to obtain full control of your device, make sure you try 11 Best Intruder Selfie Apps  (Security Apps).

We have collected the best applications to hide your files. Most of them are free or they have a free trial period. Both Android and iOS users will appreciate it.

Calculator Vault: App Hider – Hide Apps

The first app is one of the best secret calculator applications in Google Play, as well as on the App Store. 

You don’t need to live in a constant hurry or to be afraid of your data leaking to the Internet. Let the professional app take care of your private files. 

The best feature of Calculator Vault is its simple design and friendly interface. This will be a perfect option for those who are not experienced in using smartphones and applications. 

How to use the app to hide your files? It is easy, just follow the listed steps:

  1. Download Secret Calculator Vault from App Store or Google Play. 
  2. Once you open the app, it will ask you to set a password. This simple measure will ensure that nobody will get access to the hidden files. You can change the password in settings. 
  3. Put the most important photos and videos in the app’s folders. Create some empty directories to mislead those who will try to unlock your Secret Calculator. This will be especially effective if you suffer from cyber attacks from hackers. 
  4. Make hidden notes. You can import a text from the file system of your smartphone or create it from scratch right in the app. 

The app is free with no ads. Both Android and iOS users will enjoy a wide range of functions right after the download.


You may also like: 10 Best Apps to Hide Pictures and Videos on Android

Calculator# Hide Photos Videos

Here comes an ultimate privacy application for iOS! This app is truly universal. With Calculator, you will be able to hide anything you want, including big files and archives. 

The app will be a great tool for those who are afraid of other people seeing their data. You can be sure that nobody from your family or friends will see the hidden files. 

What is more, if you are afraid of hackers, they will also have no opportunity to see the content of your Calculator. Or they even won’t try looking there, that’s the way this app works. 

What can you place in the Secret Calculator:

  1. Photo and videos. That’s the reason why most users download this type of application. You can take a photo and save it to the Calculator or import it from your phone gallery. 
  2. Save important audio recordings from various messengers like WhatsApp, Viber, and many others. You don’t need to do any complicated operations, just press the button ‘import’ and hide the files.
  3. Hide your plans. Sometimes you need To-Do Lists that are supposed to be for you only. Open the app and create the file. In this case, the list will be hidden from others. 
  4. Keep your passwords and credentials secure. Nobody can remember all of the passwords. You can hardly keep so many letters and figures in mind, so let Secret Calculator do it instead of you. 
  5. Security is a priority. To be 100% safe, create multiple locks. You can use Touch ID, PIN, or password. 

If someone tries to open the app and gives it an incorrect password, the application creates a fake crash and closes itself. 

Even though the app is packed with cool functions, its size is quite small – 55 MB only. 

The Calculator is available on App Store for free. 

Secret Photo Album++

You are not the only person to worry about your security. The developers of Secret Photo Album are also concerned about privacy. 

That’s why this application is a must for those who want to be protected. It doesn’t matter whom you wanna hide the files from. It can be hackers or the members of your own family. 

When you open the app for the first time, it will ask for a password. Create a complicated one and enjoy the security. If you are not used to a password, you can always use a PIN but it’s less reliable. The app also works with Touch ID.

With Secret Photo Album, you will: 

  • Hide your private files from those who shouldn’t see them. This will help you keep your memories and never worry about security. If you have many photos and all of them are precious, divide them into albums. 
  • Take important notes and place them in the application. It can be a text or a to-do list. 
  • Edit your hidden gallery at any time. You can always replace the file and send it to your device’s gallery. 
  • Hide everything, including the icon of the app. You can do it in the settings. 
  • Supports many languages, including Spanish, French, Japanese, Russian, and many others. 

There are many other cool options you will discover. However, not all of them are free. 

If you want to use all the functions, one month will cost you 1.99$. This in-app purchase will give you access to all the features of the app. 

Unfortunately, only iOS users can download this application. 

Secure Private Calculator

This application will be the best option for those who like simple and efficient products. Secure Private Calculator is famous for its friendly interface and minimalist design. 

There is plenty of features to discover: 

  1. The app looks like a real calculator. What’s more, it automatically switches to the calculator, when it is working in the background mode. 
  2. Set the password to make your files truly private. You can change it at any time (we highly recommend that you do it regularly to make cyber attacks impossible). Press % to save the password. Try to make it complicated so that nobody can parse it. 
  3. Use File Manager. It will help you keep yourself organized and keep your information private. With this manager, you can easily import photos, videos, and many other types of files, including zip archives. 
  4. Create a custom album. Add your private photos there. You can set a special password for this album. It can be different from the one that you have set for the whole app. 
  5. Add notes. It can be your thoughts, to-do lists, or poems created by you. Nobody will ever see it.
  6. You can create your private contact book as well. Sometimes you don’t wanna others to see all of your phone numbers. Add these numbers to the app at once or import them from your device. 

Should you face any problems, feel free to write the developers about it. They are quite fast to react and fix the bugs. 

Another great thing about Secure Private Calculator is that there are no in-app purchases, all the functions are free of charge. There are some ads but they are not too frequent to appear so they won’t distract you. 

You can get this application on App Store and stop being afraid of your data being stolen. 

Calculator Vault:Photo Hider-H

calculator-vault-logo-1Security is a serious issue, and you can’t neglect it. Some photos should be hidden, though. This is why you need to try this application. 

Let’s look at the best options provided by Calculator Vault: Photo Hider-H: 

  • Open this app and import your private photos and videos there. Nobody will ever consider finding them in a calculator! 
  • Unlock the app using your fingerprint. This is the most secure technology, it is much more reliable than a PIN or a password. 
  • Enjoy full synchronization with multiple devices. This will save you precious time – you won’t need to manually import all the stuff. 
  • Hide an unlimited number of photos and files. Yo don’t need to go for in-app purchases to keep using the app.

The application is rated 4.5 out of 5 on Google play. Users love its simplicity and unlimited number of options.

By the way, if you need to hide some text messages but not the photos, you might need 5 Best iOS Apps to Hide Text Messages.

At the moment, this photo hider is available for Android users only.

calc-vault-pin-protection-screen calc-vault-screen-1


Calculator Vault: App Hider

Here is another nice privacy app. It will lock all the photos and videos that need to be hidden. There are many advantages of using this application. Not only does it hide your important files, but it also looks like a calculator, using its icon. 

Another cool thing is that Calculator can also hide whole applications so that nobody knows they are installed on your device. It will hide the app and its notifications. If you need to open the hidden app, go to Calculator Vault and feel free to use it. 

To enjoy all the options provided by Calculator Vault, you don’t need to have root privileges. The only thing you need to do is to have the app and give it some permissions. 

Here are the basic functions of Calculator Vault:

  • Password protection. When you open the app for the first time, it will ask you to give a password. Make sure it’s complicated enough. 
  • The app turns into a real calculator with its arithmetic functions and unique interface if somebody gives a wrong password. 
  • Hide all types of files, such as photos, videos, notes, applications, and archives. You can add the files when they are created or import them from your phone system. 

The app is free of charge. There are some ads that keep the content free for you. 

The application has a very high rating in Google Play. Users tend to praise it for its simple interface and efficiency.

Unfortunately, only Android users can enjoy Calculator Vault.



You need to hide some photos or videos so the best thing you can do is to try Gallery Lock. Make sure you check this powerful privacy protection tool. The range of its functions is no different from the other apps listed here. 

However, Gallery Lock has some unique features too. Let’s take a look at them: 

  • Add your videos, photos, or any other files. They will be protected by the password you will set. You can set your password containing letters and figures or use a PIN. 
  • Intruder selfies. If someone tries to unlock the app, it will automatically take a photo of this person. The photos will be kept in a special folder inside Gallery Lock. 
  • Fake Cover for 100% protection. If you enter a secret code (you can set it as well), the app will show you the interface of a real calculator. This function will come in handy if you are not alone and someone is looking straight at your screen. 
  • Manage the content. The file system is quite easy to understand. You can create various folders and divide your files. Then you can sort the files by size or tags. If you have too many files, use search to find the file by its name. 
  • Good support. There are many problems you can face when using the app. For example, you might forget your password. In the app, you can easily handle such problems. 

The only disadvantage of the application is that there can be some glitches. For example, some of the photos can be removed from the app and turn out in the gallery. This won’t lead to an information loss but still, it’s quite unpleasant. 

Even though there are many functions, the app is quite small – 14 MB only. 

You can get the application in Google Play for free. All the functions are free but you have to put up with many ads. 


Calculator Vault: Private AppLock, Photo and Video

Take a look at another secure file manager. Calculator Vault will make sure your files will be protected properly. 

Not only does the app hide your photos and videos, but it also hides your contacts, applications, notes, and other types of files. You can import them from your gallery or place them automatically. 

Here are the basic features of Calculator Vault: 

  • You can hide an unlimited number of files. If you have many files, make sure you place them in different folders. The best way to organize your files is to divide them according to your logic.
  • You can import the pictures from various social networks, such as WhatsApp, Twitter, Facebook, or any others. These pictures will be placed in Calculator Vault, not in your gallery. What is more, you can import audio messages.
  • Hide your important documents. It can be anything: a Word text, a spreadsheet, or a note you wrote. What you need to do is to set a difficult password. You can change it at any time. Now you can keep your card numbers, passwords, and other things. You can be 100% sure you won’t be hacked. 
  • Even though the app looks like a Calculator, some people may try to unlock it. If they try to do it, they will be tracked. After this, you will be able to see a folder containing selfies of intruders.
  • Hide the app if you need to. You can even hide the app’s icon so that nobody will see it on your screen. To do it, you need to go to your phone’s settings. 

If you have any problems, make sure you contact the developers, they respond fast. 

The app is available in Google Play for free. There are many ads that may distract you from the content, though. 



Calculator Lock – Lock Videos and Hide Photos

It’s time you started caring about your privacy. Do you often think about your personal data leaking out of your phone? If yes, you need to download one of the apps listed here, including this one.

Calculator Lock is aimed at hiding your photos and videos. It doesn’t work with archives and other types of files. 

Here are the basic features of Calculator Lock: 

  • The app is disguised as a calculator, so it hides your precious files behind a math application. Unfortunately, Calculator Lock works with photos and videos only. 
  • Put your photos in the app once you make them or import them from the gallery. If you import, the photos will be automatically removed from your normal gallery. 
  • Huge storage that will allow you to keep many files without any limits. This is a pro function. 
  • Good password protection. Set a complicated password to make sure it can’t be parsed. 
  • Built-in file manager and image viewer that makes it so easy and fast to work with the app. 
  • Fake Vault will help you stay private. If someone manages to get access to your smartphone or tablet, it doesn’t mean anything. The app will ask the guest to enter a password. If it’s wrong, the app will turn into a fake calculator with its typical functions. 
  • Create folders to keep order and privacy. It’s always better to divide your information and keep it in different places. In these cases, it will be harder for hackers to collect all the pieces. The number of folders you can create is unlimited. 
  • Hide folders inside the app. In fact, you can hide anything except the app itself. However, you can remove its icon from the screen. In this case, it will be hard to find it. 
  • Secret private browser to stay anonymous when surfing the Internet. However, you should always be cautious when you download files from there. 

The app is easy to use, it has a primitive interface. What is more, it has a simple algorithm for password recovery. You can change your password or PIN at the click of a button. 

The only negative thing you should know about: if you uninstall the app and download it once again, your photos and videos will be lost. 

You can download Calculator Lock from Google Play. It’s free with ads. 



You can also check: 11 Best Apps to Hide Apps 

Regina Bulanova

Regina Bulanova

I am a junior software testing engineer and I like to review good apps.

Free apps for Android and iOS