It looks like a Calculator but it secretly hides your confidential Photos, Videos, Documents, Passwords, Notes and To Dos. It disguises itself as a Calculator to make it impossible for prying eyes and hackers from discovering it. It is the most feature-rich app in the market in Security Category.


- Hide Photos and Videos from Gallery (Photos).
- Automatically Deletes them from Gallery (Optional).
- Take Pictures and Videos from Camera.
- Password-Protect Documents and other Files.
- Lock Audios and take Secure Voice Notes.
- WiFi Transfer from PC, Mac or other devices.
- A built-in Web Browser to Download Files.
- A built-in Password Manager and Wallet.
- A built-in Secure Notes and To Do List.
- Backup using Cloud Service like Dropbox.
- Panic Switch, Disguise Mode & Hack Monitoring.
- Calculator, Pin, Password, Pattern & Touch/Face ID.
- Works on iPhone and iPad with GUI for both.

Photos & Videos:
No need to keep your family, private or secret photos & videos in iPhone gallery. The app even deletes these files from your Photos when you move them to the app when needed.

A built-in secret gallery allows you to organize, view and play all your hidden images and videos inside a protected and discreet interface.

Lock private and confidential audio recordings and conversations and hide specific music files through the phone’s internal storage.

Whether you want to create a list of secret things you keep in your documents or write down your private feelings; you can do so securely with the ‘Notes’ feature.

Secure your confidential documents. You can transfer them even from your PC or Mac using WiFi transfer or from a built-in browser to your iPhone or iPad.

To Dos:
Every once in a while, we have some tasks we just don't want to be seen by anyone no matter what. This is why we have for you a secret to do list as well.

Create and lockdown sensitive credentials like your website logins, bank accounts, computer logins, credit cards, email accounts, social networks, e-banking, instant messenger etc.

Cloud Backup:
Conveniently backup your locked data into Dropbox. Prevent loss of sensitive data and restore your data in case of loss or theft of device.

Lost Password Recovery:
You don’t have to worry about forgetting your password. You can conveniently, retrieve your lost password through your registered email.

Security Locks:
You have the option to setup a Calculator, Touch/Face ID, PIN, Pattern or Password. You can even turn off everything completely.

Panic Switch:
Prevent shoulder surfers and snoopers from seeing your sensitive data, enable panic switch to quickly switch to another app.

Disguise Mode:
Confuse snoopers by enabling a fake error message box, it displays a fake crash notification to thwart further attempts on hacking your data.

Hack Monitor:
Tells you who has been trying invalid passwords to try to open your vault. Logs all such attempts and shows it to you.

Calculator# is free with ads and limitations and you can purchase it to get fully-functional and ad-free version for just a one-time fee.

What’s New

Version 3.1.7

Minor bugs resolved

Ratings and Reviews

4.5 out of 5
15.6K Ratings

15.6K Ratings

adidas_911 ,

Great way to keep your private stuff out of sight and out of mind.

The days we live in now tend to be filled with tons of info and for that matter as individuals we just don’t like everyone knowing everything and often times it’s important to keep information from getting into the hands of others. Weather it be a plain old password or confidential files or documents it’s nice to have somewhere you can store all of it together and keep it organized along with encrypted and hidden if you choose. It is so easy to use and so complex it’s easy to let someone see certain things in the app without them knowing there is more and at the same time another person looking could access something completely different but still hidden I really like the way you can disguise different things in the app so many layers of disguise.

MusicLovin'Momma ,

Warning! Don’t trust your photos solely to this app!!!

One star is even too much for this!!! I was somewhat happy with this app, until I decided to send a video to a friend. I couldn’t figure out how to do that since that app was the only place the video was stored. I decided to purchase the app to see if that could solve my dilemma. Nope, once I purchased the app, it would immediately crash and not even open! I emailed the company and have gotten no response thus far. Hopefully you don’t need their customer service for anything because it seems non existent. So as far as I can see, it’s a functional app as long as you don’t pay for it. I wouldn’t trust photos/videos to it solely though. You may not be able to send them to anyone or retrieve them if something happens to your phone. I’m out the money I paid for the app, but it’s money well spent if I can warn others about the potential problems.

It’s an iPhone 7s Plus with iOS 13.2.3

I just upgraded to the iPhone 11 Pro Max, all of my apps were transferred. I tried getting into this app again and there seems to be no way to login. It seems like you have to create a new account. I even used the same email address and passcode as originally. Even if I didn’t, theres no “forgot user ID” or “forgot password” to help me get back into the app that I paid for. The account I logged into, there aren’t any photos there. Don't waste your money paying for this app. What a nightmare!

Developer Response ,

Sorry for the inconvenience, please let me know your device and iOS version that you are using?

FNAFForever pop rocks ,

No subscription needed!

If you want an app that allows you to store a lot of photos then I recommend this one!

A lot of apps that allow you to hold photos separately from your camera roll only allow a certain number of photos before you need to pay for some sort of subscription. Luckily, this app hasn’t given me any problems with that and I‘ve been able to put a lot of photos on it! No pop ups asking for payment! I’m not very adamant about giving apps reviews, (in fact this would be my first) but I felt the need to write a review after having gone through so many apps that were unreliable and finally finding this seemingly flawless one!

So, thank you to the developers of the app. :)

App Privacy

The developer,, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Used to Track You

The following data may be used to track you across apps and websites owned by other companies:

  • Contact Info

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Contact Info
  • User Content

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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